ORCID Profile
0000-0002-3883-5498
Current Organisation
Macquarie University
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Geology | Igneous And Metamorphic Petrology | Geotectonics | Geochemistry | Geochronology And Isotope Geochemistry | Tectonics | Igneous and Metamorphic Petrology | Isotope Geochemistry | Geophysics | Geochemistry Not Elsewhere Classified | Inorganic Geochemistry | Geodynamics | Geophysics Not Elsewhere Classified | Petroleum and Coal Geology | Earth Sciences Not Elsewhere Classified | Manufacturing Engineering not elsewhere classified | Sedimentology | Exploration Geochemistry | Marine Geoscience | Geochronology | Policy and Administration | Environmental Monitoring | Other Stratigraphy (Incl. Sequence Stratigraphy) | Geology Not Elsewhere Classified | Geomorphology | Seismology and Seismic Exploration | Palaeoclimatology | Simulation And Modelling | Optimisation | Climatology (Incl. Palaeoclimatology) | Earthquake Seismology | Electrical and Electromagnetic Methods in Geophysics | Other Earth Sciences | Research, Science and Technology Policy | Mathematical Sciences Not Elsewhere Classified | Environmental Sciences Not Elsewhere Classified |
ANZSRC Socio-Economic Objective (SEO)
Earth sciences | Expanding Knowledge in the Earth Sciences | Mineral Exploration not elsewhere classified | Mathematical sciences | Land and water management | Biological sciences | Environmental and resource evaluation not elsewhere classified | Climate change | Environmentally Sustainable Mineral Resource Activities not elsewhere classified | Other environmental aspects | Ceramics | Effects of Climate Change and Variability on Australia (excl. Social Impacts) | Oil and gas | Oil and Gas Exploration | Mineral Resources (excl. Energy Resources) not elsewhere classified | Exploration | Expanding Knowledge in the Chemical Sciences | Precious (Noble) Metal Ore Exploration | Expanding Knowledge in the Agricultural and Veterinary Sciences | Titanium Minerals, Zircon, and Rare Earth Metal Ore (e.g. Monazite) Exploration | Copper Ore Exploration | Other
Related Links
Publications
Gold in the mantle: The role of pyroxenites
Publisher: Elsevier BV
Date: 02-2016
Thermochemical structure and evolution of cratonic lithosphere in central and southern Africa
Publisher: Springer Science and Business Media LLC
Date: 18-04-2022
Apatite halogens and Sr-O and zircon Hf-O isotopes: Recycled volatiles in Jurassic porphyry ore systems in southern Tibet
Publisher: Elsevier BV
Date: 09-2022
Provinciality of lithospheric mantle, E. Australia: Source of enriched components in the Cenozoic basalts
Publisher: Elsevier BV
Date: 08-2006
Platelet development in cuboid diamonds: insights from micro-FTIR mapping
Publisher: Springer Science and Business Media LLC
Date: 19-08-2012
Paleoproterozoic basement beneath the southern Jiangxi Province: Evidence from U-Pb ages and Lu-Hf isotopes in zircons from the Doushui lamprophyre
Publisher: Elsevier BV
Date: 10-03-2009
Geochemical characteristics of lava-field basalts from eastern Australia and inferred sources: Connections with the subcontinental lithospheric mantle?
Publisher: Springer Science and Business Media LLC
Date: 08-1995
The nature and timing of crustal thickening in Southern Tibet: Geochemical and zircon Hf isotopic constraints from postcollisional adakites
Publisher: Elsevier BV
Date: 11-2009
The Salma Eclogites of the Belomorian Province, Russia
Publisher: Elsevier
Date: 2011
Screening criteria for reliable U–Pb geochronology and oxygen isotope analysis in uranium-rich zircons: A case study from the Suzhou A-type granites, SE China
Publisher: Elsevier BV
Date: 04-2014
Sulfides in mantle peridotites from Penghu Islands, Taiwan: Melt percolation, PGE fractionation, and the lithospheric evolution of the South China block
Publisher: Elsevier BV
Date: 08-2009
Mantle metasomatism—precursor to continental alkaline volcanism
Publisher: Elsevier BV
Date: 11-1980
Mantle melts, metasomatism and diamond formation: Insights from melt inclusions in xenoliths from Diavik, Slave Craton
Publisher: Elsevier BV
Date: 11-2009
Is the continental Moho the crust-mantle boundary?
Publisher: Geological Society of America
Date: 1987
O – Goldschmidt Abstracts 2013
Publisher: Mineralogical Society
Date: 07-2013
Multiple origins of clinopyroxenes in alkali basaltic rocks
Publisher: Elsevier BV
Date: 04-1979
The lower crust in eastern Australia: xenolith evidence
Publisher: Geological Society of London
Date: 1986
The world turns over: Hadean–Archean crust–mantle evolution
Publisher: Elsevier BV
Date: 02-2014
Recycling of ancient subduction-modified mantle domains in the Purang ophiolite (southwestern Tibet)
Publisher: Elsevier BV
Date: 10-2016
Oceanization of the subcontinental lithospheric mantle recorded in the Yunzhug ophiolite, Central Tibetan Plateau
Publisher: Elsevier BV
Date: 10-2020
Tracing ancient events in the lithospheric mantle: A case study from ophiolitic chromitites of SW Turkey
Publisher: Elsevier BV
Date: 04-2016
Minor elements in olivine from spinel lherzolite xenoliths: implications for thermobarometry
Publisher: Mineralogical Society
Date: 04-1997
DOI: 10.1180/MINMAG.1997.061.405.09
Abstract: The proton microprobe has been used to determine contents of Ca, Ti, Ni, Mn and Zn in the olivine of 54 spinel lherzolite xenoliths from Australian and Chinese basalts. These data are compared with proton-probe data for Ni, Mn and Zn in the olivine of 180 garnet peridotite xenoliths from African and Siberian kimberlites. Fe, Mn, Ni and Zn contents are well-correlated because the spinel lherzolite olivines have higher mean Fe contents than garnet peridotite olivines (average Fo 89.6 vs. Fo 90–92 ) they also have lower Ni and higher Mn contents. Zn and Fe are well-correlated in garnet peridotite olivine, but in spinel peridotites this relationship is perturbed by partitioning of Zn into spinel. None of these elements shows significant correlation with temperature. Consistent differences in trace-element contents of olivines in the two suites is interpreted as reflecting the greater degree of depletion of Archean garnet peridotites as compared to Phanerozoic spinel lherzolites. Ca and Ti contents of spinel-peridotite olivine are well correlated with one another, and with temperature as determined by several types of geothermometer. However, Ca contents are poorly correlated with pressure as determined by the Ca-in-olivine barometer of Köhler and Brey (1990). This reflects the strong T -dependence of this barometer: the uncertainty in pressure (calculated by this method) which is produced by the ±50°C uncertainty expected of any geothermometer is ca ± 8 kbar, corresponding to the entire width of the spinel-lherzolite field at 900–1200°C.
Precambrian crustal evolution of the Yangtze Block tracked by detrital zircons from Neoproterozoic sedimentary rocks
Publisher: Elsevier BV
Date: 02-2010
Proterozoic mantle lithosphere beneath the extended margin of the South China block: In situ Re-Os evidence
Publisher: Geological Society of America
Date: 2003
DOI: 10.1130/G19619.1
The Belomorian eclogite province: Unique evidence of Meso-Neoarchaean subduction and collision
Publisher: Pleiades Publishing Ltd
Date: 10-2010
Fluid-present deformation aids chemical modification of chromite: Insights from chromites from Golyamo Kamenyane, SE Bulgaria
Publisher: Elsevier BV
Date: 07-2015
Re-Os Isotope Systematics of Sulfides in Chromitites and Host Lherzolites of the Andaman Ophiolite, India
Publisher: MDPI AG
Date: 31-07-2020
DOI: 10.3390/MIN10080686
Abstract: Laser ablation MC-ICP-MS was used to measure the Os-isotope compositions of single sulfide grains, including laurite (RuS2) and pentlandite [(Fe,Ni)9S8], from two chromitite bodies and host lherzolites from ophiolites of North Andaman (Indo-Burma-Sumatra subduction zone). The results show isotopic heterogeneity in both laurite (n = 24) and pentlandite (n = 37), similar to that observed in other chromitites and peridotites from the mantle sections of ophiolites. Rhenium-depletion model ages (TRD) of laurite and pentlandite reveal episodes of mantle magmatism and/or metasomatism in the Andaman mantle predating the formation of the ophiolite (and the host chromitites), mainly at ≈0.5, 1.2, 1.8, 2.1 and 2.5 Ga. These ages match well with the main tectonothermal events that are documented in the continental crustal rocks of South India, suggesting that the Andaman mantle (or its protolith) had a volume of lithospheric mantle once underlaying this southern Indian continental crust. As observed in other oceanic lithospheres, blocks of ancient subcontinental lithospheric mantle (SCLM) could have contributed to the development of the subduction-related Andaman–Java volcanic arc. Major- and trace-element compositions of chromite indicate crystallization from melts akin to high-Mg IAT and boninites during the initial stages of development of this intra-oceanic subduction system.
Geochronological, geochemical and isotopic study of detrital zircon suites from late Neoproterozoic clastic strata along the NE margin of the East European Craton: Implications for plate tectonic mode
Publisher: Elsevier BV
Date: 03-2010
In situ Os isotopes in abyssal peridotites bridge the isotopic gap between MORBs and their source mantle
Publisher: Springer Science and Business Media LLC
Date: 08-2005
DOI: 10.1038/NATURE03902
Abstract: Abyssal peridotites are assumed to represent the mantle residue of mid-ocean-ridge basalts (MORBs). However, the osmium isotopic compositions of abyssal peridotites and MORB do not appear to be in equilibrium, raising questions about the cogenetic relationship between those two reservoirs. However, the cause of this isotopic mismatch is mainly due to a drastic filtering of the data based on the possibility of osmium contamination by sea water. Here we present a detailed study of magmatic sulphides (the main carrier of osmium) in abyssal peridotites and show that the 187Os/188Os ratio of these sulphides is of primary mantle origin and can reach radiogenic values suggesting equilibrium with MORB. Thus, the effect of sea water on the osmium systematics of abyssal peridotites has been overestimated and consequently there is no true osmium isotopic gap between MORBs and abyssal peridotites.
India's hidden inputs to Tibetan orogeny revealed by Hf isotopes of Transhimalayan zircons and host rocks
Publisher: Elsevier BV
Date: 07-2011
Chapter 8.2 The Earliest Subcontinental Lithospheric Mantle
Publisher: Elsevier
Date: 2007
Linking crustal and mantle events using in situ trace-element and isotope analysis
Publisher: Elsevier BV
Date: 08-2006
Open System Re-Os Isotope Behavior in Platinum-Group Minerals during Laterization?
Publisher: MDPI AG
Date: 10-2021
DOI: 10.3390/MIN11101083
Abstract: In this short communication, we present preliminary data on the Re-Os isotopic systematics of platinum-group minerals (PGM) recovered from different horizons in the Falcondo Ni-laterite in the Dominican Republic. The results show differences in the Os-isotope composition in different populations of PGM: (i) pre-lateritic PGM yield 187Os/188Os varying from 0.11973 ± 0.00134 to 0.12215 ± 0.00005 (2σ uncertainty) whereas (ii) lateritic PGM are more radiogenic in terms of 187Os/188Os (from 0.12390 ± 0.00001 to 0.12645 ± 0.00005 2σ uncertainty). We suggest that these differences reflect the opening of the Re-Os system in in idual grains of PGM during lateritic weathering. The implications of these results are twofold as they will help to (1) elucidate the small-scale mobility of noble metals in the supergene setting and therefore the possible formation of PGM at these very low temperatures, (2) better refine the Os-isotopic datasets of PGM that are currently being used for defining dynamic models of core–mantle separation, crustal generation, and fundamental plate-tectonic processes such as the opening of oceans.
The thermal state and composition of the lithospheric mantle beneath the Leizhou Peninsula, South China
Publisher: Elsevier BV
Date: 04-2003
Isotope fractionation of neon during stepheating extraction?: a comment on ‘Re‐interpretation of the existence of a primitive plume under Australia based on neon isotope fractionation during step heat
Publisher: Wiley
Date: 02-2004
Archean mantle fragments in Proterozoic crust, Western Gneiss Region, Norway
Publisher: Geological Society of America
Date: 2004
DOI: 10.1130/G20366.1
Characterization of the metasomatic agent in mantle xenoliths from Devès, Massif Central (France) using coupled in situ trace-element and O, Sr and Nd isotopic compositi
Publisher: Geological Society of London
Date: 2008
DOI: 10.1144/SP293.9
Petrogenesis and geochronology of Cretaceous adakitic, I- and A-type granitoids in the NE Yangtze block: Constraints on the eastern subsurface boundary between the North and South China blocks: Reply
Publisher: Elsevier BV
Date: 05-2014
Sources of cratonic metasomatic fluids: In situ LA-MC-ICPMS analysis of Sr, Nd, Hf and Pb isotopes in Lima from the Jagersfontein Kimberlite
Publisher: American Journal of Science (AJS)
Date: 02-2014
DOI: 10.2475/02.2014.01
Vertical depletion of ophiolitic mantle decodes melt focusing and interaction in the asthenospheric column under oceanic spreading centers
Publisher: Research Square Platform LLC
Date: 08-03-2022
DOI: 10.21203/RS.3.RS-1394420/V1
Abstract: Adiabatic decompressional melting of asthenosphere under spreading centers has been accepted to produce vertical compositional variations of oceanic lithospheric mantle. However, theoretical estimates of the compositional gradients are much smaller than those observed from ophiolites, clearly requiring additional processes. Here we conduct systematic high-density s ling and whole-rock and mineral compositional analyses of harzburgites in a Tibetan ophiolitic mantle section (~2 km thick), which shows a primary upward depletion (~12% difference over ~2 km) and local depleted anomalies. Thermodynamic modeling demonstrates that these features cannot be produced by decompressional melting or proportional compression of residual mantle. Instead, they can be explained by reaction between silica-undersaturated melts and peridotite with lateral melt/rock variations in the topmost asthenospheric upwelling column, showing stronger depletion in its melt-focusing center and local zones. This column will split from the center into two parts, which rotate in the mantle flow to become horizontal, thus forming the oceanic uppermost lithospheric mantle characterized by vertical depletion and local anomalies within a sub-spreading-center regime.
Gold in the mantle: A global assessment of abundance and redistribution processes
Publisher: Elsevier BV
Date: 12-2018
Refertilized continental root controls the formation of the Mianning–Dechang carbonatite-associated rare-earth-element ore system
Publisher: Springer Science and Business Media LLC
Date: 19-08-2023
DOI: 10.1038/S43247-023-00956-6
Abstract: Rare earth element ore deposits associated with carbonatite derived from Earth’s mantle supply half of the world’s rare earth element. However, the formation of carbonatite and initial enrichment and transport of rare earth element in the mantle, is unclear. Here, we image the lithospheric architecture of a Cenozoic rare earth element ore belt in southwestern China by integrating seismic tomography with geochemical data. The subduction of the Indian continent caused vertical upwelling and lateral flow of the asthenosphere, which triggered the melting of the overlying subcontinental lithospheric mantle to generate carbonatites. Such a mantle source that previously metasomatized by fluids from recycled marine sediments is a precursor process critical for forming a giant rare earth element system. For the studied ore belt, three key factors are prerequisites to generating ore-forming carbonatites: thick lithosphere with a continental root prior fertilization of the subcontinental lithospheric mantle and trans-lithospheric weakness for magma ascent.
Inclusions of crichtonite-group minerals in Cr-pyropes from the Internatsionalnaya kimberlite pipe, Siberian Craton: Crystal chemistry, parageneses and relationships to mantle metasomatism
Publisher: Elsevier BV
Date: 05-2018
Rates of Magma Ascent: Constraints from Mantle‐Derived Xenoliths
Publisher: Wiley
Date: 19-11-2010
Early crustal evolution in the western Yangtze Block: Evidence from U–Pb and Lu–Hf isotopes on detrital zircons from sedimentary rocks
Publisher: Elsevier BV
Date: 12-2012
Diamonds from Wellington, NSW: insights into the origin of eastern Australian diamonds
Publisher: Mineralogical Society
Date: 08-1999
Abstract: Diamonds from alluvial deposits near Wellington, New South Wales, have been characterized on the basis of morphological features, mineral inclusions, C isotope signatures, N content and aggregation state and internal structure. The diamonds are of two types. The larger group (Group A) is indistinguishable from diamonds found worldwide from kimberlitic and l roitic host rocks. This group is inferred to have formed in a peridotitic mantle source in Pre-Cambrian subcratonic lithosphere. The second group (Group B) is unique in its internal structures (which show evidence of growth in a stress field and non-planar facets), has unusually heavy C isotopic compositions and contains Ca-rich eclogitic inclusions. This group is inferred to have formed in a subducting slab. Diamonds of both groups have external features (corrosion structures and polish) indicating transport to the surface by l roitic-like magmas. The diamonds show evidence of long residence at the earth's surface and significant alluvial reworking: they are not accompanied by typical diamond indicator minerals.
Melt Migration and Interaction in a Dunite Channel System within Oceanic Forearc Mantle: the Yushigou Harzburgite–Dunite Associations, North Qilian Ophiolite (NW China)
Publisher: Oxford University Press (OUP)
Date: 25-01-2021
DOI: 10.1093/PETROLOGY/EGAA115
Abstract: Harzburgite–dunite associations in the Yushigou ophiolitic complex (North Qilian suture, NW China) offer insights into melt migration and melt–rock interaction above a subduction zone. Based on detailed petrographic and in situ analyses, we propose a three-stage model to describe the history of melt channel formation in oceanic arc mantle. In the first stage, high-degree melt extraction was followed by widespread infiltration of small-volume melts, which formed the harzburgite that makes up most of the Yushigou complex. The Yushigou harzburgites thus have highly refractory major-element compositions (olivine Fo = 91·1–93·2, spinel Cr# [atomic 100 × Cr/(Cr + Al)] = 55·2–62·9, whole-rock Mg# = 90·5–92·0, Al2O3 = 0·29–0·74 wt%, CaO = 0·35–0·54 wt%, and low Na2O = 0·02–0·05 wt%) but slight enrichment in the light rare earth elements (LREE). In the second stage, high-volume focused melts infiltrated into the mantle wedge and produced two types of dunite, with high-Cr# (mainly 63·1–73·6) versus low-Cr# (23·6–33·7) spinel. In the low-Cr# dunites, spinels have significantly fewer inclusions and lower Fo values (88·7–90·1) in olivine than in the high-Cr# dunite (Fo = 89·9–90·5), together with higher modal abundances of interstitial sulfides. The two groups of dunite show similar extremely low TiO2 (& ·01 wt%) but different igneous clinopyroxene trace-element patterns (ΣLREE/ΣHREE ≈ 1 in low-Cr# dunite versus ΣLREE/ΣHREE & in high-Cr# dunite), indicating distinct differences in the infiltrating melts. The low-Cr# dunite is a cumulate from an anhydrous Al- and S-enriched basaltic melt, whereas the high-Cr# dunite was produced by reaction of harzburgite with a carbon-bearing, alkaline hydrous silicate magma. The confluence of these melt migrations finally formed a channelized dunite network, and later magmatic activity was restricted to these channels. Pulsated melt supply after chromite crystallization formed pervasive sieve-textured rims around spinel in both kinds of dunite, but these are rare in the harzburgite. The third stage was marked by fluid-dominated metasomatism recorded by millimeter-scale veined conduits, which contain carbonate (dolomite and magnesite), hibole, phlogopite and compound crystal assemblages in both kinds of dunite. CH4–N2–graphite-dominated fluid inclusions are widespread in all lithologies, recording the volatiles transported during the last metasomatic event. The Yushigou complex thus provides a detailed ex le of interaction between multiple batches of melt or fluid and a lithospheric mantle wedge dunitic channel system. The results of this study further suggest that the formation of podiform chromite requires melt participation, and the nature and origins of the melts can be erse.
Mud Tank Zircon: Long‐Term Evaluation of a Reference Material for U‐Pb Dating, Hf‐Isotope Analysis and Trace Element Analysis
Publisher: Wiley
Date: 18-05-2019
DOI: 10.1111/GGR.12265
Infrared investigation of Timber Creek 01 Kimberlite diamonds
Publisher: Elsevier BV
Date: 08-2006
Helium and strontium isotopes in ultramafic xenoliths
Publisher: Elsevier BV
Date: 02-1986
Basement components of the Xiangshan-Yuhuashan area, South China: Defining the boundary between the Yangtze and Cathaysia blocks
Publisher: Elsevier BV
Date: 05-2018
Corrigendum to “Zircons in mantle xenoliths record the Triassic Yangtze–North China continental collision” [Earth Planet. Sci. Lett. 247 (2006) 130–142]
Publisher: Elsevier BV
Date: 11-2006
Petrological Evolution of the European Lithospheric Mantle: from Archean to Present Day
Publisher: Oxford University Press (OUP)
Date: 07-2009
A refractory mantle protolith in younger continental crust, east-central China: Age and composition of zircon in the Sulu ultrahigh-pressure peridotite
Publisher: Geological Society of America
Date: 2006
DOI: 10.1130/G22569.1
Prolonged magmatism and growth of the Iran-Anatolia Cadomian continental arc segment in Northern Gondwana
Publisher: Elsevier BV
Date: 03-2020
Tibetan chromitites: Excavating the slab graveyard
Publisher: Geological Society of America
Date: 02-2015
DOI: 10.1130/G36245.1
Pre-Mesozoic Crimea as a continuation of the Dobrogea platform: insights from detrital zircons in Upper Jurassic conglomerates, Mountainous Crimea
Publisher: Springer Science and Business Media LLC
Date: 10-05-2019
Rift-induced disruption of cratonic keels drives kimberlite volcanism
Publisher: Springer Science and Business Media LLC
Date: 26-07-2023
Langshan basalts record recycled Paleo-Asian oceanic materials beneath the northwest North China Craton
Publisher: Elsevier BV
Date: 10-2019
Structure and composition of the lithosphere beneath Mount Carmel, North Israel
Publisher: Springer Science and Business Media LLC
Date: 02-2022
Petrological evolution of the European lithospheric mantle: introduction
Publisher: Geological Society of London
Date: 2010
DOI: 10.1144/SP337.1
Characterisation of primary and secondary carbonates in hypabyssal kimberlites: an integrated compositional and Sr-isotopic approach
Publisher: Springer Science and Business Media LLC
Date: 11-08-2018
Detrital zircon geochronology of Precambrian basement sequences in the Jiangnan orogen: Dating the assembly of the Yangtze and Cathaysia Blocks
Publisher: Elsevier BV
Date: 10-2007
Evaluation of a method for the separation of Ni in geological samples
Publisher: Elsevier BV
Date: 08-2006
Sources of the Nanwenhe - Song Chay granitic complex (SW China - NE Vietnam) and its tectonic significance
Publisher: Elsevier BV
Date: 10-2017
EQUILIBRATION TEMPERATURES AND ELASTIC WAVE VELOCITIES FOR UPPER MANTLE ROCKS FROM EASTERN AUSTRALIA - IMPLICATIONS FOR THE INTERPRETATION OF SEISMOLOGICAL MODELS
Publisher: Elsevier BV
Date: 12-1990
The composition and evolution of lithospheric mantle
Publisher: Oxford University Press (OUP)
Date: 04-07-2009
LAM-ICPMS U–Pb dating of kimberlitic perovskite: Eocene–Oligocene kimberlites from the Kundelungu Plateau, D.R. Congo
Publisher: Elsevier BV
Date: 03-2008
Lithosphere formation in the central Slave Craton (Canada): Plume subcretion or lithosphere accretion?
Publisher: Springer Science and Business Media LLC
Date: 08-05-2007
Cu isotopes reveal initial Cu enrichment in sources of giant porphyry deposits in a collisional setting
Publisher: Geological Society of America
Date: 31-12-2018
DOI: 10.1130/G45362.1
Zircon chemistry and magma mixing, SE China: In-situ analysis of Hf isotopes, Tonglu and Pingtan igneous complexes
Publisher: Elsevier BV
Date: 04-2002
Erratum: Origins of xenolithic eclogites and pyroxenites from the Central Slave Craton, Canada (Journal of Petrology (2007) vol. 48 (1843-1873))
Publisher: Oxford University Press (OUP)
Date: 08-10-2007
Sulfide metasomatism and the mobility of gold in the lithospheric mantle
Publisher: Elsevier BV
Date: 09-2015
Sr isotopic heterogeneity in primitive basaltic rocks, southeastern Australia: correlation with mantle metasomatism
Publisher: Springer Science and Business Media LLC
Date: 1984
DOI: 10.1007/BF00373055
The Hf isotope composition of cratonic mantle: LAM-MC-ICPMS analysis of zircon megacrysts in kimberlites
Publisher: Elsevier BV
Date: 2000
Trace‐element signatures of apatites in granitoids from the Mt Isa Inlier, northwestern Queensland
Publisher: Informa UK Limited
Date: 08-2001
Enrichment of upper mantle peridotite: petrological, trace element and isotopic evidence in xenoliths from SE China
Publisher: Elsevier BV
Date: 08-2003
Granulite xenoliths and their zircons, Tuoyun, NW China: Insights into southwestern Tianshan lower crust
Publisher: Elsevier BV
Date: 30-03-2006
Widespread Archean basement beneath the Yangtze craton
Publisher: Geological Society of America
Date: 2006
DOI: 10.1130/G22282.1
New constraints on the source, composition, and post-emplacement modification of kimberlites from in situ C–O–Sr-isotope analyses of carbonates from the Benfontein sills (South Africa)
Publisher: Springer Science and Business Media LLC
Date: 19-03-2020
Dating lower crust and upper mantle events: an ion microprobe study of xenoliths from kimberlitic pipes, South Australia
Publisher: Elsevier BV
Date: 03-1994
Mesoarchean subduction processes: 2.87 Ga eclogites from the Kola Peninsula, Russia
Publisher: Geological Society of America
Date: 08-2010
DOI: 10.1130/G31219.1
Genesis and evolution of the lithospheric mantle beneath the Buffalo Head Terrane, Alberta (Canada)
Publisher: Elsevier BV
Date: 09-2004
Zircons in the Shenglikou ultrahigh-pressure garnet peridotite massif and its country rocks from the North Qaidam terrane (western China): Meso-Neoproterozoic crust–mantle coupling and early Paleozoic
Publisher: Elsevier BV
Date: 05-2011
Laser-ablation microprobe (LAM)-ICPMS unravels the highly siderophile element geochemistry of the oceanic mantle
Publisher: Elsevier BV
Date: 07-2001
Recycled volatiles determine fertility of porphyry deposits in collisional settings
Publisher: Mineralogical Society of America
Date: 04-2021
DOI: 10.2138/AM-2021-7714
Abstract: An intensive study of the geochemical characteristics (including the volatile elements Cl and S) of apatite associated with porphyry deposits was undertaken to address the debate about the crust- or mantle-derivation of their copper and gold and to better understand the controls on the transport of metals in magmatic fluids in post-subduction settings. New geochemical data on apatite reveal parameters to discriminate mineralized porphyry systems across Iran and western China (Tibet and Yunnan), from coeval barren localities across this post-subduction metallogenic belt. Apatites in fertile porphyries have higher Cl and S concentrations (reflecting water-rich crystallization conditions) than those from coeval barren ones. Our new isotopic data also indicate these volatiles are likely derived from pre-enriched sub-continental lithospheric mantle, metasomatized by previous oceanic subduction. This study demonstrates that refertilization of suprasubduction lithospheric mantle during previous collision events is a prerequisite for forming post-subduction fertile porphyries, providing an evidence-based alternative to current ore-enrichment models.
Melt inclusions from the deep Slave lithosphere: implications for the origin and evolution of mantle-derived carbonatite and kimberlite
Publisher: Elsevier BV
Date: 09-2004
Inclusions in diamonds from the K14 and K10 kimberlites, Buffalo Hills, Alberta, Canada: diamond growth in a plume?
Publisher: Elsevier BV
Date: 09-2004
The origin and evolution of Archean lithospheric mantle
Publisher: Elsevier BV
Date: 11-2003
In situ Re‐Os analysis of sulfide inclusions in kimberlitic olivine: New constraints on depletion events in the Siberian lithospheric mantle
Publisher: American Geophysical Union (AGU)
Date: 11-2002
DOI: 10.1029/2001GC000287
Archean to Proterozoic depletion in Cape Verde lithospheric mantle
Publisher: Elsevier BV
Date: 08-2006
The microstructure of layered ultramafic cumulates
Publisher: Elsevier BV
Date: 05-2021
Tectonic affinity of the west Qinling terrane (central China): North China or Yangtze?
Publisher: American Geophysical Union (AGU)
Date: 04-2010
DOI: 10.1029/2008TC002428
Comment on ultra-high pressure and ultra-reduced minerals in ophiolites may form by lightning strikes
Publisher: European Association of Geochemistry
Date: 09-2018
Quantitative trace-element analysis of diamond by laser ablation inductively coupled plasma mass spectrometry
Publisher: Royal Society of Chemistry (RSC)
Date: 2005
DOI: 10.1039/B501374G
Zircon xenocrysts in Late Cretaceous magmatic rocks in the Kermanshah Ophiolite: link to Iran continental crust supports the subduction initiation model
Publisher: Informa UK Limited
Date: 23-02-2022
Carmeltazite, ZrAl2Ti4O11, a new mineral trapped in corundum from volcanic rocks of Mt Carmel, northern Israel
Publisher: MDPI AG
Date: 19-12-2018
DOI: 10.3390/MIN8120601
Abstract: The new mineral species carmeltazite, ideally ZrAl2Ti4O11, was discovered in pockets of trapped melt interstitial to, or included in, corundum xenocrysts from the Cretaceous Mt Carmel volcanics of northern Israel, associated with corundum, tistarite, anorthite, osbornite, an unnamed REE (Rare Earth Element) phase, in a Ca-Mg-Al-Si-O glass. In reflected light, carmeltazite is weakly to moderately bireflectant and weakly pleochroic from dark brown to dark green. Internal reflections are absent. Under crossed polars, the mineral is anisotropic, without characteristic rotation tints. Reflectance values for the four COM wavelengths (Rmin, Rmax (%) (λ in nm)) are: 21.8, 22.9 (471.1) 21.0, 21.6 (548.3), 19.9, 20.7 (586.6) and 18.5, 19.8 (652.3). Electron microprobe analysis (average of eight spot analyses) gave, on the basis of 11 oxygen atoms per formula unit and assuming all Ti and Sc as trivalent, the chemical formula (Ti3+3.60Al1.89Zr1.04Mg0.24Si0.13Sc0.06Ca0.05Y0.02Hf0.01)Σ=7.04O11. The simplified formula is ZrAl2Ti4O11, which requires ZrO2 24.03, Al2O3 19.88, and Ti2O3 56.09, totaling 100.00 wt %. The main diffraction lines, corresponding to multiple hkl indices, are (d in Å (relative visual intensity)): 5.04 (65), 4.09 (60), 2.961 (100), 2.885 (40), and 2.047 (60). The crystal structure study revealed carmeltazite to be orthorhombic, space group Pnma, with unit-cell parameters a = 14.0951 (9), b = 5.8123 (4), c = 10.0848 (7) Å, V = 826.2 (1) Å3, and Z = 4. The crystal structure was refined to a final R1 = 0.0216 for 1165 observed reflections with Fo 4σ(Fo). Carmeltazite exhibits a structural arrangement similar to that observed in a defective spinel structure. The name carmeltazite derives from Mt Carmel (“CARMEL”) and from the dominant metals present in the mineral, i.e., Titanium, Aluminum and Zirconium (“TAZ”). The mineral and its name have been approved by the IMA Commission on New Minerals, Nomenclature and Classification (2018-103).
MEASURED AND CALCULATED ELASTIC WAVE VELOCITIES FOR XENOLITHS FROM THE LOWER CRUST AND UPPER MANTLE
Publisher: Elsevier BV
Date: 02-1990
Temporal correlation of magmatic-tectonic events in the lower and upper crust in north-east Australia
Publisher: Springer Science and Business Media LLC
Date: 08-11-2011
Unusual mineral inclusions and carbon isotopes of alluvial diamonds from Bingara, eastern Australia
Publisher: Elsevier BV
Date: 07-2003
Zircon recycling and crystallization during formation of chromite- and Ni-arsenide ores in the subcontinental lithospheric mantle (Serranía de Ronda, Spain)
Publisher: Elsevier BV
Date: 11-2017
Late Paleozoic magmatism in South China: Oceanic subduction or intracontinental orogeny?
Publisher: Springer Science and Business Media LLC
Date: 16-11-2012
Tracking Deep Lithospheric Events with Garnet-Websterite Xenoliths from Southeastern Australia
Publisher: Oxford University Press (OUP)
Date: 05-2018
The lower crust and upper mantle beneath northwestern Spitsbergen: evidence from xenoliths and geophysics
Publisher: Elsevier BV
Date: 08-1987
Mineral inclusions and geochemical characteristics of microdiamonds from the DO27, A154, A21, A418, DO18, DD17 and Ranch Lake kimberlites at Lac de Gras, Slave Craton, Canada☆
Publisher: Elsevier BV
Date: 09-2004
The enigma of crustal zircons in upper-mantle rocks: Clues from the Tumut ophiolite, Southeast Australia
Publisher: Geological Society of America
Date: 02-2015
DOI: 10.1130/G36231.1
Roll-Back, Extension and Mantle Upwelling Triggered Eocene Potassic Magmatism in NW Iran
Publisher: Oxford University Press (OUP)
Date: 29-06-2018
Non-chondritic distribution of the highly siderophile elements in mantle sulphides
Publisher: Springer Science and Business Media LLC
Date: 10-2000
DOI: 10.1038/35038049
Abstract: The abundances of highly siderophile (iron-loving) elements (HSEs) in the Earth's mantle provide important constraints on models of the Earth's early evolution. It has long been assumed that the relative abundances of HSEs should reflect the composition of chondritic meteorites--which are thought to represent the primordial material from which the Earth was formed. But the non-chondritic abundance ratios recently found in several types of rock derived from the Earth's mantle have been difficult to reconcile with standard models of the Earth's accretion, and have been interpreted as having arisen from the addition to the primitive mantle of either non-chondritic extraterrestrial material or differentiated material from the Earth's core. Here we report in situ laser-ablation analyses of sulphides in mantle-derived rocks which show that these sulphides do not have chondritic HSE patterns, but that different generations of sulphide within single s les show extreme variability in the relative abundances of HSEs. Sulphides enclosed in silicate phases have high osmium and iridium abundances but low Pd/Ir ratios, whereas pentlandite-dominated interstitial sulphides show low osmium and iridium abundances and high Pd/Ir ratios. We interpret the silicate-enclosed sulphides as the residues of melting processes and interstitial sulphides as the crystallization products of sulphide-bearing (metasomatic) fluids. We suggest that non-chondritic HSE patterns directly reflect processes occurring in the upper mantle--that is, melting and sulphide addition via metasomatism--and are not evidence for the addition of core material or of 'exotic' meteoritic components.
Petrology and geochemistry of peridotite xenoliths from Vietnam, Indochina block
Publisher: Elsevier BV
Date: 08-2006
Trace-element partitioning between garnet and clinopyroxene in mantle-derived pyroxenites and eclogites: P-T-X controls
Publisher: Elsevier BV
Date: 04-1995
The role of eclogite in the rift-related metasomatism and Cenozoic magmatism of Northern Victoria Land, Antarctica
Publisher: Elsevier BV
Date: 06-2011
3.6 Ga lower crust in central China: New evidence on the assembly of the North China craton
Publisher: Geological Society of America
Date: 2004
DOI: 10.1130/G20133.1
Formation history and protolith characteristics of granulite facies metamorphic rock in Central Cathaysia deduced from U-Pb and Lu-Hf isotopic studies of single zircon grains
Publisher: Science China Press., Co. Ltd.
Date: 2005
DOI: 10.1360/982004-808
Extremely low structural hydroxyl contents in upper mantle xenoliths from the Nógrád-Gömör Volcanic Field (northern Pannonian Basin): Geodynamic implications and the role of post-eruptive re-equilibra
Publisher: Elsevier BV
Date: 03-2019
Co-rich sulfides in mantle peridotites from Penghu Islands, Taiwan: Footprints of Proterozoic mantle plumes under the Cathaysia Block
Publisher: Elsevier BV
Date: 02-2010
U–Pb and Hf-isotope analysis of zircons in mafic xenoliths from Fuxian kimberlites: evolution of the lower crust beneath the North China craton
Publisher: Springer Science and Business Media LLC
Date: 16-07-2004
Super-reduced mineral assemblages in “ophiolitic” chromitites and peridotites: The view from Mount Carmel
Publisher: Schweizerbart
Date: 10-10-2017
Highly evolved Archean basement beneath the western Cathaysia Block, South China
Publisher: Elsevier BV
Date: 2011
U-Pb dating of zircons from quartz diorite and its enclaves at Tongguanshan in Anhui and its petrogenetic implication
Publisher: Science China Press., Co. Ltd.
Date: 2004
DOI: 10.1360/04WD0137
Recurrent magmatic activity on a lithosphere-scale structure: Crystallization and deformation in kimberlitic zircons
Publisher: Elsevier BV
Date: 02-2017
Persistence of mantle lithospheric Re–Os signature during asthenospherization of the subcontinental lithospheric mantle: insights from in situ isotopic analysis of sulfides from the Ronda peridotite (
Publisher: Springer Science and Business Media LLC
Date: 14-08-2009
Carbon isotopes of eclogite-hosted diamonds from the Nyurbinskaya kimberlite pipe, Yakutia: The metasomatic origin of diamonds
Publisher: Elsevier BV
Date: 04-2017
Multi-stage modification of Paleoarchean crust beneath the Anabar tectonic province (Siberian craton)
Publisher: Elsevier BV
Date: 02-2018
Components and episodic growth of Precambrian crust in the Cathaysia Block, South China: Evidence from U–Pb ages and Hf isotopes of zircons in Neoproterozoic sediments
Publisher: Elsevier BV
Date: 08-2010
Extreme lithium isotopic fractionation in three zircon standards (Plešovice, Qinghu and Temora)
Publisher: Springer Science and Business Media LLC
Date: 23-11-2015
DOI: 10.1038/SREP16878
Abstract: To understand the behavior of Li in zircon, we have analyzed the abundance and isotopic composition of Li in three zircon standards (Plešovice, Qinghu and Temora) widely used for microbeam analysis of U-Pb ages and O-Hf isotopes. We have mapped Li concentration ([Li]) on large grains, using a Cameca 1280HR Secondary Ion Mass Spectrometer (SIMS). All zircons have a rim 5–20 μm wide in which [Li] is 5 to 20 times higher than in the core. Up to ~20‰ isotopic fractionation is observed on a small scale in the rims of a single zircon grain. The measured δ 7 Li values range from –14.3 to 3.7‰ for Plešovice, –22.8 to 1.4‰ for Qinghu and –4.7 to 16.1‰ for Temora zircon. The [Li] and δ 7 Li are highly variable at the rims, but relatively homogenous in the cores of the grains. From zircon rim to core, [Li] decreases rapidly, while δ 7 Li increases, suggesting that the large isotopic variation of Li in zircons could be caused by diffusion. Our data demonstrate that homogeneous δ 7 Li in the cores of zircon can retain the original isotopic signatures of the magmas, while the bulk analysis of Li isotopes in mineral separates and in bulk-rock s les may produce misleading data.
Immiscible metallic melts in the deep Earth
Publisher: Elsevier BV
Date: 09-2020
Ophiolitic Chromitites Originated from Ancient SCLM
Publisher: Wiley
Date: 12-2015
Origin of volcanic ash beds across the permian-triassic boundary, daxiakou, south china: Petrology and U-Pb age, trace elements and Hf-isotope composition of zircon
Publisher: Elsevier BV
Date: 12-2013
Plume-subduction interaction forms large auriferous provinces
Publisher: Springer Science and Business Media LLC
Date: 10-10-2017
DOI: 10.1038/S41467-017-00821-Z
Abstract: Gold enrichment at the crustal or mantle source has been proposed as a key ingredient in the production of giant gold deposits and districts. However, the lithospheric-scale processes controlling gold endowment in a given metallogenic province remain unclear. Here we provide the first direct evidence of native gold in the mantle beneath the Deseado Massif in Patagonia that links an enriched mantle source to the occurrence of a large auriferous province in the overlying crust. A precursor stage of mantle refertilisation by plume-derived melts generated a gold-rich mantle source during the Early Jurassic. The interplay of this enriched mantle domain and subduction-related fluids released during the Middle-Late Jurassic resulted in optimal conditions to produce the ore-forming magmas that generated the gold deposits. Our study highlights that refertilisation of the subcontinental lithospheric mantle is a key factor in forming large metallogenic provinces in the Earth’s crust, thus providing an alternative view to current crust-related enrichment models.
Apatite in the mantle: implications for metasomatic processes and high heat production in Phanerozoic mantle
Publisher: Elsevier BV
Date: 09-2000
Imaging global chemical and thermal heterogeneity in the subcontinental lithospheric mantle with garnets and xenoliths: Geophysical implications
Publisher: Elsevier BV
Date: 04-2006
Trace-element geochemistry of diamondite: Crystallisation of diamond from kimberlite–carbonatite melts
Publisher: Elsevier BV
Date: 11-2008
Cr-rich rutile: A powerful tool for diamond exploration
Publisher: Elsevier BV
Date: 11-2016
Unexposed Archean components and complex post-Archean accretion/reworking processes beneath the southern Yangtze Block revealed by zircon xenocrysts from the Paleozoic lamproites, South China
Publisher: Elsevier BV
Date: 10-2018
The subantarctic lithospheric mantle
Publisher: Geological Society of London
Date: 09-2021
DOI: 10.1144/M56-2020-13
Abstract: We present a summary of peridotite in the Subantarctic (46–60° S) surrounding the Antarctic Plate. Peridotite xenoliths occur on the Kerguelen Islands and Auckland Islands. The Kerguelen Islands are underlain by a plume, whereas the Auckland Islands are part of continental Zealandia, which is a Gondwana-rifted fragment. Small amounts of serpentinized peridotite has been dredged from fracture zones on the Southeast Indian Ridge, Southwest Indian Ridge and Pacific Antarctic Ridge, and represent upwelled asthenosphere accreted to form lithosphere. Suprasubduction-zone peridotite was collected from two locations on the Sandwich Plate. Peridotites from most subantarctic occurrences are moderately to highly depleted, and many show signs of subsequent metasomatic enrichment. Os isotopes indicate that subantarctic continental and oceanic lithospheric mantle contains ancient fragments that underwent depletion long before formation of the overlying crust.
Discussion of “Enigmatic super-reduced phases in corundum from natural rocks: Possible contamination from artificial abrasive materials or metallurgical slags” by Litasov et al. (Lithos, 340–341, p.18
Publisher: Elsevier BV
Date: 12-2019
Primitive arc magmatism and delamination: Petrology and geochemistry of pyroxenites from the Cabo Ortegal Complex, Spain
Publisher: Oxford University Press (OUP)
Date: 10-2016
Phantom recycled carbonates and mantle pyroxenites: insight from the low-δ26Mg intraplate basaltic province across central-eastern Asia
Publisher: Wiley
Date: 16-11-2022
Lithospheric, Cratonic, and Geodynamic Setting of Ni-Cu-PGE Sulfide Deposits
Publisher: Society of Economic Geologists
Date: 09-2010
U–Pb geochronology and Hf–Nd isotopic geochemistry of the Badu Complex, Southeastern China: Implications for the Precambrian crustal evolution and paleogeography of the Cathaysia Block
Publisher: Elsevier BV
Date: 12-2012
Granulite xenoliths from Cenozoic Basalts in SE China provide geochemical fingerprints to distinguish lower crust terranes from the North and South China tectonic blocks
Publisher: Elsevier BV
Date: 03-2003
Deposits associated with ultramafic–mafic complexes in Mexico: the Loma Baya case
Publisher: Elsevier BV
Date: 03-2017
Intrusion and contamination of high-temperature dunitic magma: the Nordre Bumandsfjord pluton, Seiland, Arctic Norway
Publisher: Springer Science and Business Media LLC
Date: 19-12-2012
Goldschmidt Abstracts 2009 – Y
Publisher: Elsevier BV
Date: 06-2009
New insights into the Re-Os systematics of sub-continental lithospheric mantle from in situ analysis of sulphides
Publisher: Elsevier BV
Date: 10-2002
Ultramafic Xenoliths from Bullenmerri and Gnotuk Maars, Victoria, Australia: Petrology of a Sub-Continental Crust-Mantle Transition
Publisher: Oxford University Press (OUP)
Date: 02-1984
Resetting of the U–Pb Zircon System in Cambro-Ordovician Intrusives of the Deep Freeze Range, Northern Victoria Land, Antarctica
Publisher: Oxford University Press (OUP)
Date: 21-11-2006
Continental collision and accretion recorded in the deep lithosphere of central China
Publisher: Elsevier BV
Date: 05-2008
Multi-mineral geochronology of kimberlites, kamafugites and alkaline-carbonatite rocks, SW São Francisco Craton, Brazil: Appraisal of intrusion ages
Publisher: Elsevier BV
Date: 12-2023
Residence of trace elements in metasomatized spinel lherzolite xenoliths
Publisher: Springer Science and Business Media LLC
Date: 1991
DOI: 10.1007/BF00687203
Discovery of the first natural hydride
Publisher: Mineralogical Society of America
Date: 04-2019
DOI: 10.2138/AM-2019-6949
Transition-Zone Mineral Assemblages in Peridotite Massifs, Tibet: Implications for Collision-zone Dynamics and Orogenic Peridotites
Publisher: Wiley
Date: 12-2015
Tracing Cu and Fe from source to porphyry: in situ determination of Cu and Fe isotope ratios in sulfides from the Grasberg Cu–Au deposit
Publisher: Elsevier BV
Date: 07-2004
Trace-element patterns of diamond: Toward a unified genetic model
Publisher: Elsevier BV
Date: 08-2006
Microscale effects of melt infiltration into the lithospheric mantle: Peridotite xenoliths from Xilong, South China
Publisher: Elsevier BV
Date: 09-2015
Dynamics of cratons in an evolving mantle
Publisher: Elsevier BV
Date: 04-2008
In situ Re-Os isotopic analysis of platinum-group minerals from the Mayarí-Cristal ophiolitic massif (Mayarí-Baracoa Ophiolitic Belt, eastern Cuba): Implications for the origin of Os-isotope heterogeneities in podiform chromitites
Publisher: Springer Science and Business Media LLC
Date: 05-09-2011
Diatreme Characteristics – Evidence from the Mogo Hill Intrusion, Sydney Basin
Publisher: Informa UK Limited
Date: 09-1980
DOI: 10.1071/EG980121
Os-isotope variability within sulfides from podiform chromitites
Publisher: Elsevier BV
Date: 2012
Goldschmidt Abstracts 2009 – O
Publisher: Elsevier BV
Date: 06-2009
Plagioclase-spinel intergrowths in alkali basaltic rocks from the Southern Highlands, N.S.W.
Publisher: Springer Science and Business Media LLC
Date: 1973
DOI: 10.1007/BF00373880
Nature and evolution of Mesozoic–Cenozoic lithospheric mantle beneath the Cathaysia block, SE China
Publisher: Elsevier BV
Date: 05-2004
Numerical evaluation of arsenic mobilisation during deepwell injection of aerobic groundwater into a pyritic aquifer
Publisher: Elsevier BV
Date: 06-2009
Goldschmidt Abstracts 2009 – C
Publisher: Elsevier BV
Date: 06-2009
A translithospheric suture in the vanished 1-Ga lithospheric root of South India: Evidence from contrasting lithosphere sections in the Dharwar Craton
Publisher: Elsevier BV
Date: 11-2009
Single zircon LAM-ICPMS U-Pb dating of Guidong complex (SE China) and its petrogenetic significance
Publisher: Science China Press., Co. Ltd.
Date: 2003
DOI: 10.1360/03WD0028
Mantle Metasomatism
Publisher: Springer Berlin Heidelberg
Date: 06-04-2012
Petrological evolution of the European lithospheric mantle
Publisher: Geological Society of London
Date: 2010
DOI: 10.1144/SP337
Plume-like neon in a metasomatic apatite from the Australian lithospheric mantle
Publisher: Springer Science and Business Media LLC
Date: 07-1997
DOI: 10.1038/40606
DEPLETED SSZ TYPE MANTLE PERIDOTITES IN PROTEROZOIC EASTERN SAYAN OPHIOLITES IN SIBERIA
Publisher: Institute of Earth's Crust, Siberian Branch of the Russian Academy of Sciences
Date: 2017
Crustal Evolution of NW Iran: Cadomian Arcs, Archean Fragments and the Cenozoic Magmatic Flare-Up
Publisher: Oxford University Press (OUP)
Date: 11-2017
Origins of xenolithic eclogites and pyroxenites from the central slave craton, Canada
Publisher: Oxford University Press (OUP)
Date: 03-09-2007
Continental Thermal Blanketing Explains the Compositional Dichotomy of the Diffuse Basaltic Province Across Central‐Eastern Asia
Publisher: American Geophysical Union (AGU)
Date: 31-08-2023
DOI: 10.1029/2023GL104951
Abstract: A diffuse magmatic province covering central‐eastern Asia continent displays a compositional transition at 120–100 Ma and probably reflects melting initiation in isotopically enriched lithospheric mantle, followed by melting of the asthenosphere. However, the cause for the transition across such a vast landmass remains poorly constrained. Here, analyses of newly found Chaoge basalts (∼95 Ma, central Asia) and compiled data from across the basaltic province are combined to reveal the factors controlling the basalt dichotomy. The Chaoge basalts are considered to originate from a hot pyroxenite‐bearing asthenosphere with potential temperatures of ∼1,450°C, overlapping the source thermochemical conditions for most post‐transition basaltic rocks. The asthenosphere in 120–100 Ma is suggested to be hotter and to have controlled the compositional transition in the studied basaltic province. We suggest that asthenospheric warming resulted from prolonged continental thermal blanketing and can account for other diffuse igneous provinces with similar compositional variations and tectonic histories.
First isotopic data on detrital zircons from the Engane-Pe Uplift (western Polar Urals): Implications for the primary tectonic position of the Pre-Uralides-Timanides
Publisher: Pleiades Publishing Ltd
Date: 06-2009
The Middle-Late Cretaceous Zagros ophiolites, Iran: Linking of a 3000 km swath of subduction initiation fore-arc lithosphere from Troodos, Cyprus to Oman
Publisher: Geological Society of America
Date: 17-09-2021
DOI: 10.1130/B36041.1
Abstract: New trace-element, radiogenic Sr-Nd-Pb isotopic and geochronological data from Middle-Late Cretaceous Zagros ophiolites of Iran give new insights into the tectono-magmatic history of these supra-subduction zone (SSZ)-type ophiolites. The distribution of Middle-Late Cretaceous SSZ-type ophiolites in Iran comprises two parallel belts: (1) the outer Zagros ophiolitic belt and (2) the inner Zagros ophiolitic belt. These Middle-Late Cretaceous ophiolites were generated by seafloor spreading in what became the fore-arc and back-arc during the subduction initiation event and now define a ~3000-km-long belt from Cyprus to Turkey, Syria, Iran, the UAE, and Oman. The Zagros ophiolites contain complete (if disrupted) mantle and crustal sequences. Mantle sequences from both outer-belt and inner-belt ophiolites are dominated by dunites, harzburgites, and lherzolites with minor chromitite lenses. Peridotites are also intruded by gabbros and a variety of mafic to minor felsic (plagiogranite and dacite) dikes. Crustal rocks comprise ultramafic-mafic cumulates as well as isotropic gabbros, sheeted dike complexes, pillowed and massive lavas, and felsic rocks. Our new zircon U-Pb ages indicate that the outer-belt and inner-belt ophiolites formed near coevally during the Middle-Late Cretaceous 100–96 Ma for the outer belt and 105–94 Ma for the inner belt. Both incompatible-element ratios and isotopic data confirm that depleted mantle and variable contributions of subduction components were involved in the genesis of outer-belt and inner-belt rocks. Our data for the outer belt and inner belt along with those from better-studied ophiolites in Cyprus, Turkey, the UAE, and Oman lead to the conclusion that a broad, ~3000-km-long swath of fore-arc lithosphere was created during Middle-Late Cretaceous time.
Two age populations of zircons from the Timber Creek kimberlites, Northern Territory, as determined by laser‐ablation ICP‐MS analysis
Publisher: Wiley
Date: 10-2001
Crust-mantle evolution in NW Spitsbergen: Re-Os, U-Pb, and Hf isotope data
Publisher: Elsevier BV
Date: 08-2006
Scandium speciation in a world-class lateritic deposit
Publisher: European Association of Geochemistry
Date: 11-2016
Two stages of zircon crystallization in the Jingshan monzogranite, Bengbu Uplift: Implications for the syn-collisional granites of the Dabie–Sulu UHP orogenic belt and the climax of movement on the Ta
Publisher: Elsevier BV
Date: 03-2011
Carbonatite melt in oceanic upper mantle beneath the Kerguelen Archipelago
Publisher: Elsevier BV
Date: 07-2004
Feldspar from carbonate-rich silicate metasomatism in the shallow oceanic mantle under Kerguelen Islands (South Indian Ocean)
Publisher: Elsevier BV
Date: 07-2004
Mantle amphibole trace-element and isotopic signatures trace multiple metasomatic episodes in lithospheric mantle, western Victoria, Australia
Publisher: Elsevier BV
Date: 07-2004
Zircon U-Pb and Hf isotopes of volcanic rocks from the Batamayineishan Formation in the eastern Junggar Basin
Publisher: Springer Science and Business Media LLC
Date: 28-10-2010
A xenolith-derived geotherm for southeastern australia and its geophysical implications
Publisher: Elsevier BV
Date: 1985
The recycling of chromitites in ophiolites from southwestern North America
Publisher: Elsevier BV
Date: 12-2017
Use and misuse of Mg- and Mn-rich ilmenite in diamond exploration: A petrographic and trace element approach
Publisher: Elsevier BV
Date: 11-2017
Nuclear microprobe analysis of melt inclusions in minerals: Windows on metasomatic processes in the earth's mantle
Publisher: Elsevier BV
Date: 07-2001
Multiple Metasomatism beneath the Nógrád–Gömör Volcanic Field (Northern Pannonian Basin) Revealed by Upper Mantle Peridotite Xenoliths
Publisher: Oxford University Press (OUP)
Date: 06-2017
Sulfide aggregation in ophiolitic dunite channels explains Os-isotope mismatch between oceanic crust and mantle
Publisher: Wiley
Date: 10-2020
Taking the pulse of the Earth: linking crustal and mantle events
Publisher: Informa UK Limited
Date: 08-2008
Trace-element of Tuoyun clinopyroxene: Implication for the deep processes of lithospheric mantle beneath the southwest Tianshan, West China
Publisher: Springer Science and Business Media LLC
Date: 07-2001
DOI: 10.1007/BF02900604
Crustal evolution in the Georgetown Inlier, North Queensland, Australia: a detrital zircon grain study
Publisher: Elsevier BV
Date: 11-2007
Sources and timing of pyroxenite formation in the sub-arc mantle: Case study of the Cabo Ortegal Complex, Spain
Publisher: Elsevier BV
Date: 09-2017
Noble gases in pyroxenites and metasomatised peridotites from the Newer Volcanics, southeastern Australia: Implications for mantle metasomatism
Publisher: Elsevier BV
Date: 07-2000
Melt/mantle mixing produces podiform chromite deposits in ophiolites: Implications of Re–Os systematics in the Dongqiao Neo-tethyan ophiolite, northern Tibet
Publisher: Elsevier BV
Date: 2012
Thermal and compositional structure of the subcontinental lithospheric mantle: Derivation from shear wave seismic tomography
Publisher: American Geophysical Union (AGU)
Date: 07-2006
DOI: 10.1029/2005GC001120
Timing the tectonic mingling of ultramafic rocks and metasediments in the southern section of the coastal accretionary complex of central Chile
Publisher: Informa UK Limited
Date: 23-11-2018
Seeking the primary compositions of mantle xenoliths: Isotopic and elemental consequences of sequential leaching treatments on an eclogite suite
Publisher: Elsevier BV
Date: 10-2012
Complex evolution of the lower crust beneath the southeastern North China Craton: The Junan xenoliths and xenocrysts: Reply
Publisher: Elsevier BV
Date: 10-2015
Type I eclogites from Roberts Victor kimberlites: Products of extensive mantle metasomatism
Publisher: Elsevier BV
Date: 11-2011
U–Pb isotopic ages and Hf isotopic composition of single zircons: The search for juvenile Precambrian continental crust
Publisher: Elsevier BV
Date: 08-2005
Archean mantle contributes to the genesis of chromitite in the Palaeozoic Sartohay ophiolite, Asiatic Orogenic Belt, northwestern China
Publisher: Elsevier BV
Date: 10-2012
Genesis and tectonic implications of podiform chromitites in the metamorphosed ultramafic massif of Dobromirtsi (Bulgaria)
Publisher: Elsevier BV
Date: 02-2015
Fractionation of oxygen and iron isotopes by partial melting processes: Implications for the interpretation of stable isotope signatures in mafic rocks
Publisher: Elsevier BV
Date: 06-2009
Granulite xenoliths from Cenozoic Basalts in SE China provide geochemical fingerprints to distinguish lower crust terranes from the North and South China tectonic blocks—Reply
Publisher: Elsevier BV
Date: 03-2004
Age and composition of granulite and pyroxenite xenoliths in Hannuoba basalts reflect Paleogene underplating beneath the North China Craton
Publisher: Elsevier BV
Date: 06-2009
Applications of olivine-orthopyroxene-spinel oxygen geobarometers to the redox state of the upper mantle
Publisher: Oxford University Press (OUP)
Date: 1991
The growth of the continental crust: Constraints from zircon Hf-isotope data
Publisher: Elsevier BV
Date: 10-2010
Geochemical variability among stratiform chromitites and ultramafic rocks from Western Makran, South Iran
Publisher: Elsevier BV
Date: 03-2022
Nitrogen nanoinclusions in milky diamonds from Juina area, Mato Grosso State, Brazil
Publisher: Elsevier BV
Date: 11-2016
Petrology and Sr–Nd–Hf isotope geochemistry of gabbro xenoliths from the Hyblean Plateau: a MARID reservoir beneath SE Sicily?
Publisher: Springer Science and Business Media LLC
Date: 17-06-2008
Transformation of Archaean Lithospheric Mantle by Refertilization: Evidence from Exposed Peridotites in the Western Gneiss Region, Norway
Publisher: Oxford University Press (OUP)
Date: 31-03-2006
The Taihua group on the southern margin of the North China craton: further insights from U–Pb ages and Hf isotope compositions of zircons
Publisher: Springer Science and Business Media LLC
Date: 14-06-2009
Cretaceous thermo-chemical modification of the Kaapvaal cratonic lithosphere, South Africa
Publisher: Elsevier BV
Date: 11-2009
Use of in situ Hf-isotope analyses of zircon to interpret granitoid magma genesis
Publisher: Elsevier BV
Date: 08-2006
Mantle recycling: Transition zone metamorphism of tibetan ophiolitic peridotites and its tectonic implications
Publisher: Oxford University Press (OUP)
Date: 04-2016
Magnesium and oxygen isotopes in Roberts Victor eclogites
Publisher: Elsevier BV
Date: 11-2016
Insights into the mantle geochemistry of scandium from a meta-analysis of garnet data
Publisher: Elsevier BV
Date: 06-2018
Carboniferous and Permian granites of the northern Tasman orogenic belt, Queensland, Australia: insights into petrogenesis and crustal evolution from an in situ zircon study
Publisher: Springer Science and Business Media LLC
Date: 16-12-2012
Diamond, subcalcic garnet, and mantle metasomatism: Kimberlite sampling patterns define the link
Publisher: Geological Society of America
Date: 2007
DOI: 10.1130/G23092A.1
Metasomatism versus host magma infiltration: A case study of Sal mantle xenoliths, Cape Verde Archipelago
Publisher: Geological Society of America
Date: 2011
Geochronology, geochemistry and petrology of the oligocene magmatism in SE segment of the UDMB, Iran
Publisher: Elsevier BV
Date: 05-2022
Morphology and geochemistry of zircons from late Mesozoic igneous complexes in coastal SE China: implications for petrogenesis
Publisher: Mineralogical Society
Date: 04-2002
Abstract: The Pingtan and Tonglu igneous complexes in SE China are typical of the calc-alkaline series developed at active continental margins. These two complexes are dominated by felsic rocks, temporally and spatially associated with minor mafic rocks. Morphological and trace-element studies of zircon populations in rocks from each of these complexes show that the zircon populations may be ided into 3–4 distinct growth stages, characterized by different distributions of morphological indices ( I pr , I py and I el ), and different contents of the substituting elements (Hf, U, Th, Y and P). The four growth stages recognized in the zircons are believed to have formed successively in the magma chamber, during the emplacement, and in the early and later stages of magma consolidation, respectively. All four stages are recognized in the plutonic Pingtan complex, whereas the stages 3 and 4 are less developed in the volcanic/subvolcanic Tonglu complex. Based on the chemistry and morphology of the different zircon populations of the Pingtan and Tonglu complexes, it is suggested that basaltic magmas underplating at the boundary between crust and mantle caused partial melting of the mid–lower crust and produced granitoid magmas. Subsequently, mixing between magmas was important.
Cr2O3 in corundum
Publisher: Mineralogical Society of America
Date: 09-2021
DOI: 10.2138/AM-2021-7680
Abstract: Xenocrysts and xenoliths in Upper Cretaceous pyroclastics on Mount Carmel (northern Israel) represent a series of similar magma-fluid systems at different stages of their evolution, recording a continuous decrease in oxygen fugacity (fO2) as crystallization proceeded. Corundum coexisting with Fe-Mg-Cr-Al spinels, other Fe-Mg-Al-Na oxides, and Fe-Ni alloys in apparent cumulates crystallized at fO2 values near the iron-wüstite (IW) buffer (fO2 = IW±1) and is zoned from high-Cr cores to lower-Cr rims, consistent with fractional crystallization trends. The reconstructed parental melts of the cumulates are Al-Cr-Fe-Mg oxides with ca. 2 wt% SiO2. Corundum in other possible cumulates that contain Cr-Fe (Fe 45 wt%) alloys has low-Cr cores and still lower-Cr rims. Corundum coexisting with Cr0 (fO2 = IW-5) in some possible cumulates has low-Cr cores, but high-Cr rims (to & % Cr2O3). These changes in zoning patterns reflect the strong decrease in the melting point of Cr2O3, relative to Al2O3, with decreasing fO2. The electron energy loss spectroscopy (EELS) analyses show that all Cr in corundum that coexists with Cr0 is present as Cr3+. This suggests that late in the evolution of these reduced melts, Cr2+ has disproportionated via the reaction 3Cr2+(melt) → 2Cr3+(Crn) + Cr0. The most Cr-rich corundum crystallized together with β-alumina phases including NaAl11O17 (diaoyudaoite) and KAl11O17 (kahlenbergite) and β″-alumina phases residual melts crystallized a range of (K,Mg)2(Al,Cr)10O17 phases with the kahlenbergite structure. The parental melts of these assemblages appear to have been Al-Cr-K-Na-Mg oxides, which may be related to the Al-Cr-Fe-Mg oxide melts mentioned above, through fractional crystallization or liquid immiscibility. These s les are less reduced (fO2 from IW to IW-5) than the assemblages of the trapped silicate melts in the more abundant xenoliths of corundum aggregates (fO2 = IW-6 to IW-10). They could be considered to represent an earlier stage in the fO2 evolution of an “ideal” Mt. Carmel magmatic system, in which mafic or syenitic magmas were fluxed by mantle-derived CH4+H2 fluids. This is a newly recognized step in the evolution of the Mt. Carmel assemblages and helps to understand element partitioning under highly reducing conditions.
Oxides of low pressure origin from alkali basaltic rocks, southern highlands, N.S.W., and their bearing on the petrogenesis of alkali basaltic magmas
Publisher: Informa UK Limited
Date: 12-1973
Layered Mantle Lithosphere in the Lac de Gras Area, Slave Craton: Composition, Structure and Origin
Publisher: Oxford University Press (OUP)
Date: 05-1999
Super-reducing conditions in ancient and modern volcanic systems: sources and behaviour of carbon-rich fluids in the lithospheric mantle
Publisher: Springer Science and Business Media LLC
Date: 11-05-2018
Heterogeneity in the thermal state of the lower crust and upper mantle beneath eastern Australia
Publisher: Informa UK Limited
Date: 06-1991
DOI: 10.1071/EG991295
Rejuvenation vs. recycling of Archean crust in the Gawler Craton, South Australia: Evidence from U–Pb and Hf isotopes in detrital zircon
Publisher: Elsevier BV
Date: 12-2009
Ages, trace elements and Hf-isotopic compositions of zircons from claystones around the Permian-Triassic boundary in the Zunyi Section, South China: Implications for nature and tectonic setting of the volcanism
Publisher: Springer Science and Business Media LLC
Date: 12-2015
A primitive alkali basaltic stratovolcano and associated eruptive centres, Northwestern Spitsbergen: Volcanology and tectonic significance
Publisher: Elsevier BV
Date: 03-1989
Xenolith geotherms and crustal models in Eastern Australia
Publisher: Elsevier BV
Date: 06-1991
Crustal growth in south‐eastern Australia—evidence from lower crustal eclogitic and granulitic xenoliths
Publisher: Wiley
Date: 03-1983
Mineral Chemistry of Peridotites from Paleozoic, Mesozoic and Cenozoic Lithosphere: Constraints on Mantle Evolution beneath Eastern China
Publisher: Oxford University Press (OUP)
Date: 02-08-2006
Quantitative analysis of trace element abundances in glasses and minerals: a comparison of laser ablation inductively coupled plasma mass spectrometry, solution inductively coupled plasma mass spectro
Publisher: Royal Society of Chemistry (RSC)
Date: 1998
DOI: 10.1039/A707972I
Constraints from zircon Hf-O-Li isotopic compositions on the genesis of slightly low-δ18O alkaline granites in the Taohuadao area, Zhejiang Province, SE China
Publisher: Elsevier BV
Date: 11-2018
Linking continental deep subduction with destruction of a cratonic margin: strongly reworked North China SCLM intruded in the Triassic Sulu UHP belt
Publisher: Springer Science and Business Media LLC
Date: 20-06-2014
Volatile-bearing minerals and lithophile trace elements in the upper mantle
Publisher: Elsevier BV
Date: 09-1997
Ancient mantle lithosphere beneath the Khanka massif in the Russian Far East: in situ Re–Os evidence
Publisher: Wiley
Date: 03-06-2015
DOI: 10.1111/TER.12157
Zircon inclusions in corundum megacrysts: I. Trace element geochemistry and clues to the origin of corundum megacrysts in alkali basalts
Publisher: Elsevier BV
Date: 07-1996
Finding of ancient materials in Cathaysia and implication for the formation of Precambrian crust
Publisher: Springer Science and Business Media LLC
Date: 2007
The lithospheric mantle beneath the southwestern Tianshan area, northwest China
Publisher: Springer Science and Business Media LLC
Date: 11-03-2006
Repeated magmatic buildup and deep “hot zones” in continental evolution: The Cadomian crust of Iran
Publisher: Elsevier BV
Date: 02-2020
Trace element partitioning in mixed-habit diamonds
Publisher: Elsevier BV
Date: 09-2013
U–Pb and Lu–Hf isotopes in detrital zircon from Neoproterozoic sedimentary rocks in the northern Yangtze Block: Implications for Precambrian crustal evolution
Publisher: Elsevier BV
Date: 05-2013
The Siberian lithosphere traverse: mantle terranes and the assembly of the Siberian Craton
Publisher: Elsevier BV
Date: 09-1999
Lithospheric domains and controls on kimberlite emplacement, Slave Province, Canada: Evidence from elastic thickness and upper mantle composition
Publisher: American Geophysical Union (AGU)
Date: 10-2005
DOI: 10.1029/2005GC000978
CO2- and LREE-rich mantle below eastern Australia: a REE and isotopic study of alkaline magmas and apatite-rich mantle xenoliths from the Southern Highlands Province, Australia
Publisher: Elsevier BV
Date: 11-1983
Discussion of the paper by Galuskin and Galuskina (2003), “Evidence of the anthropogenic origin of the ‘Carmel sapphire’ with enigmatic super-reduced minerals”
Publisher: Mineralogical Society
Date: 24-05-2023
DOI: 10.1180/MGM.2023.36
Moho and petrologic crust-mantle boundary coincide under southeastern Australia: Comment and Reply
Publisher: Geological Society of America
Date: 1994
Trace element fingerprinting: laboratory studies and petrogenetic processes
Publisher: Elsevier BV
Date: 07-2004
High- and low-Cr chromitite and dunite in a Tibetan ophiolite: evolution from mature subduction system to incipient forearc in the Neo-Tethyan Ocean
Publisher: Springer Science and Business Media LLC
Date: 23-05-2017
‘A celebration of geochemistry’ 7 June 2004
Publisher: Elsevier BV
Date: 06-2004
Rb/Sr evidence for the nature of the mantle, thermal events and volcanic activity of the Southeastern Australian continental margin
Publisher: Elsevier BV
Date: 06-1984
Subduction signature for quenched carbonatites from the deep lithosphere
Publisher: Geological Society of America
Date: 2002
Diamonds in ophiolites: Contamination or a new diamond growth environment?
Publisher: Elsevier BV
Date: 11-2015
Zircon Crystal Morphology, Trace Element Signatures and Hf Isotope Composition as a Tool for Petrogenetic Modelling: Examples From Eastern Australian Granitoids
Publisher: Oxford University Press (OUP)
Date: 26-10-2005
Roles of Melting and Metasomatism in the Formation of the Lithospheric Mantle beneath the Leizhou Peninsula, South China
Publisher: Oxford University Press (OUP)
Date: 20-10-2005
Water contents of Roberts Victor xenolithic eclogites: primary and metasomatic controls
Publisher: Springer Science and Business Media LLC
Date: 21-11-2014
Pratylenchus thornei: The Relationship Between Presowing Nematode Density and Yield Loss in Wheat and Barley
Publisher: Scientific Societies
Date: 03-2020
DOI: 10.1094/PHYTO-08-19-0320-R
Abstract: The root lesion nematode Pratylenchus thornei causes economic losses in wheat and barley internationally through both reduced grain yield and grain quality. This study investigated the relationships between the presowing P. thornei density and grain yield and the postharvest nematode densities. Four field experiments were conducted at the same site between 2010 and 2014. A range of presowing P. thornei densities was established in the first year by growing three cereal cultivars that ranged from resistant to susceptible. In the following year, plots were sown with the five same cereal cultivars. A linear relationship was observed between the natural log of the presowing P. thornei density and grain yield across all seasons. The results showed that grain yield losses varied between cultivars and seasons. The importance of season was significant, with this study conducted over several seasons, and it highlighted the variability in yield losses between seasons, which will need further investigation. The greatest yield losses observed were 25 to 28% when the maximum presowing P. thornei densities ranged between 150 and 250 P. thornei g of soil −1 . An analysis of the relationship between the presowing and postharvest nematode densities revealed that increased presowing nematode densities resulted in decreased multiplication rates in all seasons and in all cultivars. Nematode multiplication rates also varied between seasons. These results explain why it is difficult to predict nematode levels based on cropping history, and additionally, they highlight the importance of growing resistant cultivars to maintain low levels of P. thornei to minimize risk of yield losses.
Metamorphic fingerprints of Fe-rich chromitites from the Eastern Pampean Ranges, Argentina
Publisher: Sociedad Geologica Mexicana
Date: 28-11-2020
DOI: 10.18268/BSGM2020V72N3A080420
Abstract: Chromitites hosted in the serpentinized harzburgite bodies from Los Congos and Los Guanacos (Eastern P ean Ranges, north Argentina) record a complex metamorphic evolution. The hydration of chromitites during the retrograde metamorphism, their subsequent dehydration during the prograde metamorphism and the later-stage cooling, have resulted in a threefold alteration of chromite: i) Type I is characterized by homogeneous Fe3+- and Cr-rich chromite ii) Type II chromite contains exsolved textures that consist in blebs and fine lamellae of a magnetite-rich phase hosted in a spinel-rich phase iii) Type III chromite is formed by variable proportions of magnetite-rich and spinel-rich phases with symplectitic texture. Type I chromite shows lower Ga and higher Co, Zn and Mn than magmatic chromites from chromitites in suprasubduction zone ophiolites as a consequence of the redistribution of these elements between Fe3+-rich non-porous chromite and silicates during the prograde metamorphism. Whereas, the spinel-rich phase in Type III chromite is enriched in Co, Zn, Sc, and Ga, but depleted in Mn, Ni, V and Ti with respect to the magnetite-rich phase, due to the metamorphic cooling from high-temperature conditions. The pseudosection calculated in the fluid-saturated FCrMACaSH system, and contoured for Cr# and Mg#, allows us to constrain the temperature of formation of Fe3+-rich non-porous chromite by the diffusion of magnetite in Fe2+-rich porous chromite at ºC and 20 kbar. The subsequent dehydration of Fe3+-rich non-porous chromite by reaction with antigorite and chlorite formed Type I chromite and Mg-rich olivine and pyroxene at ºC and 10 kbar. The ultimate hydration of silicates in Type I chromite and the exsolution of Type II and Type III chromites would have started at ~600 ºC. These temperatures are in the range of those estimated for ocean floor serpentinization ( ºC and kbar), the regional prograde metamorphism in the granulite facies (800 ºC and kbar), and subsequent retrogression to the hibolite facies (600 ºC and 4-6.2 kbar) in the host ultramafic rocks at Los Congos and Los Guanacos. A continuous and slow cooling from granulite to hibolite facies produced the exsolution of spinel-rich and magnetite-rich phases, developing symplectitic textures in Type III chromite. However, the discontinuous and relatively fast cooling produced the exsolution of magnetite-rich phase blebs and lamellae within Type II chromite. The P-T conditions calculated in FCrMACaSH system and the complex textural and geochemical fingerprints showed by Type I, Type II and Type III chromites leads us to suggest that continent-continent collisional orogeny better records the fingerprints of prograde metamorphism in ophiolitic chromitites.
Lithosphere evolution beneath the Kaapvaal Craton: Re–Os systematics of sulfides in mantle-derived peridotites
Publisher: Elsevier BV
Date: 08-2004
Mantle formation and evolution, Slave Craton: Constraints from HSE abundances and Re-Os isotope systematics of sulfide inclusions in mantle xenocrysts
Publisher: Elsevier BV
Date: 08-2004
Hydrous metasomatism of oceanic sub-arc mantle, Lihir, Papua New Guinea Part 2. Trace element characteristics of slab-derived fluids
Publisher: Elsevier BV
Date: 11-2001
Buoyant ancient continental mantle embedded in oceanic lithosphere (Sal Island, Cape Verde Archipelago)
Publisher: Elsevier BV
Date: 11-2010
Early Paleozoic tectonic reconstruction of Iran: Tales from detrital zircon geochronology
Publisher: Elsevier BV
Date: 2017
Re–Os isotopes of sulfides in mantle xenoliths from eastern China: Progressive modification of lithospheric mantle
Publisher: Elsevier BV
Date: 04-2008
Lithosphere structure and evolution in southeastern Australia
Publisher: Geological Society of America
Date: 2003
Theme 5: The deeper earth
Publisher: Elsevier BV
Date: 06-2004
Insights on the Cenozoic climatic history of Southeast Australia from kaolinite dating
Publisher: Elsevier BV
Date: 10-2022
Cenozoic lithospheric architecture and metallogenesis in Southeastern Tibet
Publisher: Elsevier BV
Date: 03-2021
Heterogeneous and metasomatized mantle recorded by trace elements in minerals of the Donghai garnet peridotites, Sulu UHP terrane, China
Publisher: Elsevier BV
Date: 10-2005
Sulfide in dunite channels reflects long-distance reactive migration of mid-ocean-ridge melts from mantle source to crust: A Re-Os isotopic perspective
Publisher: Elsevier BV
Date: 02-2020
Permian to quaternary magmatism beneath the Mt Carmel area, Israel: Zircons from volcanic rocks and associated alluvial deposits
Publisher: Elsevier BV
Date: 08-2018
Location of Pacific and Indian mid-ocean ridge–type mantle in two time slices: Evidence from Pb, Sr, and Nd isotopes for Cenozoic Australian basalts
Publisher: Geological Society of America
Date: 1999
Goldschmidt Abstracts 2010 – M
Publisher: Elsevier BV
Date: 06-2010
Neoarchean (2.7–2.8 Ga) accretion beneath the North China Craton: U–Pb age, trace elements and Hf isotopes of zircons in diamondiferous kimberlites
Publisher: Elsevier BV
Date: 10-2009
Lateral and Vertical Heterogeneity in the Lithospheric Mantle at the Northern Margin of the Pannonian Basin Reconstructed From Peridotite Xenolith Microstructures
Publisher: American Geophysical Union (AGU)
Date: 07-2019
DOI: 10.1029/2018JB016582
Abstract: This study analyzes the microstructures and deformational characteristics of spinel peridotite xenoliths from the Nógrád‐Gömör Volcanic Field (NGVF), located on the northern margin of a young extensional basin presently affected by compression. The xenoliths show a wide range of microstructures, bearing the imprints of heterogeneous deformation and variable degrees of subsequent annealing. Olivine crystal preferred orientations (CPOs) have dominantly [010]‐fiber and orthorhombic patterns. Orthopyroxene CPOs indicate coeval deformation with olivine. Olivine J indices correlate positively with equilibration temperatures, suggesting that the CPO strength increases with depth. In contrast, the intensity of intragranular deformation in olivine varies as a function of the s ling locality. We interpret the microstructures and CPO patterns as recording deformation by dislocation creep in a transpressional regime, which is consistent with recent tectonic evolution in the Carpathian‐Pannonian region due to the convergence between the Adria microplate and the European platform. Postkinematic annealing is probably linked to percolation of metasomatism by mafic melts through the upper mantle of the NGVF prior to the eruption of the host alkali basalt. Elevated equilibration temperatures in xenoliths from the central part of the volcanic field are interpreted to be associated with the last metasomatic event, which only shortly preceded the ascent of the host magma. Despite well‐developed olivine CPOs in the xenoliths, which imply a strong seismic anisotropy, the lithospheric mantle alone cannot account for the shear wave splitting delay times measured in the NGVF, indicating that deformation in both the lithosphere and the asthenosphere contributes to the observed shear wave splitting.
A reappraisal of the metamorphic history of the Tehuitzingo chromitite, Puebla state, Mexico
Publisher: Informa UK Limited
Date: 15-11-2019
Platinum-group elements and the multistage metasomatic history of Kerguelen lithospheric mantle (South Indian Ocean)
Publisher: Elsevier BV
Date: 08-2004
Moho vs crust–mantle boundary: Evolution of an idea
Publisher: Elsevier BV
Date: 12-2013
Temporal changes in subduction- to collision-related magmatism in the Neotethyan orogen: The Southeast Iran example
Publisher: Elsevier BV
Date: 03-2022
Subduction, high‐P metamorphism, and collision fingerprints in South Iran: Constraints from zircon U‐Pb and mica Rb‐Sr geochronology
Publisher: American Geophysical Union (AGU)
Date: 2017
DOI: 10.1002/2016GC006585
Mapping olivine composition in the lithospheric mantle
Publisher: Elsevier BV
Date: 15-11-2000
Subduction-Related Diamond Deposits? Constraints, Possibilities, and New Data from Eastern Australia
Publisher: Society of Economic Geologists
Date: 1998
DOI: 10.5382/REV.11.13
Archaean and Proterozoic crustal evolution in the Eastern Succession of the Mt Isa district, Australia: U – Pb and Hf-isotope studies of detrital zircons *
Publisher: Informa UK Limited
Date: 02-2006
Feedback of mantle metasomatism on olivine micro–fabric and seismic properties of the deep lithosphere
Publisher: Elsevier BV
Date: 03-2019
Pyroxenite Dykes in Orogenic Peridotite from North Qaidam (NE Tibet, China) Track Metasomatism and Segregation in the Mantle Wedge
Publisher: Oxford University Press (OUP)
Date: 12-2014
Tectonothermal evolution of the continental crust beneath the Yakutian diamondiferous province (Siberian craton): U–Pb and Hf isotopic evidence on zircons from crustal xenoliths of kimberlite pipes
Publisher: Elsevier BV
Date: 09-2016
Component variation in the late Neoproterozoic to Cambrian sedimentary rocks of SW China – NE Vietnam, and its tectonic significance
Publisher: Elsevier BV
Date: 05-2018
Grenvillian orogeny in the Southern Cathaysia Block: Constraints from U-Pb ages and Lu-Hf isotopes in zircon from metamorphic basement
Publisher: Elsevier BV
Date: 20-08-2008
In situ measurement of Re-Os isotopes in mantle sulfides by laser ablation multicollector-inductively coupled plasma mass spectrometry: Analytical methods and preliminary results
Publisher: Elsevier BV
Date: 03-2002
The lithospheric architecture of Africa: Seismic tomography, mantle petrology, and tectonic evolution
Publisher: Geological Society of America
Date: 02-2009
DOI: 10.1130/GES00179.1
Thermal state of the lithosphere beneath Central Mongolia: evidence from deep-seated xenoliths from the Shavaryn-Saram volcanic centre in the Tariat depression, Hangai, Mongolia
Publisher: Elsevier BV
Date: 12-1995
The Earliest Subcontinental Lithospheric Mantle
Publisher: Elsevier
Date: 2019
Trace-element patterns of fibrous and monocrystalline diamonds: Insights into mantle fluids
Publisher: Elsevier BV
Date: 08-2010
Multi-stage origin of Roberts Victor eclogites: Progressive metasomatism and its isotopic effects
Publisher: Elsevier BV
Date: 06-2012
Complex evolution of the lower crust beneath the southeastern North China Craton: the Junan xenoliths and xenocrysts
Publisher: Elsevier BV
Date: 10-2014
Coupling, decoupling and metasomatism: Evolution of crust–mantle relationships beneath NW Spitsbergen
Publisher: Elsevier BV
Date: 09-2012
Relict refractory mantle beneath the eastern North China block: significance for lithosphere evolution
Publisher: Elsevier BV
Date: 05-2001
A spectroscopic and carbon-isotope study of mixed-habit diamonds: Impurity characteristics and growth environment
Publisher: Mineralogical Society of America
Date: 20-12-2012
DOI: 10.2138/AM.2013.4179
Lithospheric mapping: a pathfinder for hidden terrane and ore systems in southren Lhasa block
Publisher: Wiley
Date: 05-2019
A terrestrial magmatic hibonite-grossite-vanadium assemblage
Publisher: Mineralogical Society of America
Date: 02-2019
DOI: 10.2138/AM-2019-6733
Metamorphism disturbs the Re-Os signatures of platinum-group minerals in ophiolite chromitites
Publisher: Geological Society of America
Date: 07-2012
DOI: 10.1130/G33064.1
Late cretaceous subduction-related magmatism on the southern edge of Sabzevar basin, NE Iran
Publisher: Geological Society of London
Date: 05-02-2023
DOI: 10.1144/JGS2018-076
Upper mantle composition: Tools for smarter diamond exploration
Publisher: Springer Berlin Heidelberg
Date: 2005
A Paleoproterozoic orogeny recorded in a long-lived cratonic remnant (Wuyishan terrane), eastern Cathaysia Block, China
Publisher: Elsevier BV
Date: 11-2009
Sulfides and chalcophile elements in Roberts Victor eclogites: Unravelling a sulfide-rich metasomatic event
Publisher: Elsevier BV
Date: 09-2013
H2O contents and their modification in the Cenozoic subcontinental lithospheric mantle beneath the Cathaysia block, SE China
Publisher: Elsevier BV
Date: 10-2011
First results of isotopic dating of detrital zircons from the clastic rocks of the Pre-Uralides-Timanides complexes: Contribution in the Late Precambrian stratigraphy of the Enganepe Uplift, Western P
Publisher: Pleiades Publishing Ltd
Date: 02-2009
Trace-element geochemistry and U–Pb dating of perovskite in kimberlites of the Lunda Norte province (NE Angola): Petrogenetic and tectonic implications
Publisher: Elsevier BV
Date: 05-2016
Two‐layered oceanic lithospheric mantle in a T ibetan ophiolite produced by episodic subduction of T ethyan slabs
Publisher: American Geophysical Union (AGU)
Date: 03-2017
DOI: 10.1002/2016GC006681
Variations of the Effective Elastic Thickness (Te) and Structure of the Lithosphere Beneath the Slave Province, Canada
Publisher: Informa UK Limited
Date: 09-2005
DOI: 10.1071/EG05266
Deformation microstructures reveal a complex mantle history for polycrystalline diamond
Publisher: American Geophysical Union (AGU)
Date: 10-2012
DOI: 10.1029/2012GC004250
Petrogenesis and geochronology of Cretaceous adakitic, I- and A-type granitoids in the NE Yangtze block: Constraints on the eastern subsurface boundary between the North and South China blocks
Publisher: Elsevier BV
Date: 08-2013
Two age populations of zircons from the Timber Creek kimberlites, Northern Territory, as determined by laser-ablation ICP-MS analysis
Publisher: Wiley
Date: 10-2001
Corrigendum to Chromitites in ophiolites: How, where, when, why? Part II. The crystallisation of chromitites
Publisher: Elsevier BV
Date: 03-2014
The Evolution of the Upper Mantle beneath the Canary Islands: Information from Trace Elements and Sr isotope Ratios in Minerals in Mantle Xenoliths
Publisher: Oxford University Press (OUP)
Date: 09-09-2004
Abstract: Laser ablation microprobe data are presented for olivine, orthopyroxene and clinopyroxene in spinel harzburgite and lherzolite xenoliths from La Palma, Hierro, and Lanzarote, and new whole-rock trace-element data for xenoliths from Hierro and Lanzarote. The xenoliths show evidence of strong major, trace element and Sr isotope depletion (87Sr/86Sr ≤ 0·7027 in clinopyroxene in the most refractory harzburgites) overprinted by metasomatism. The low Sr isotope ratios are not compatible with the former suggestion of a mantle plume in the area during opening of the Atlantic Ocean. Estimates suggest that the composition of the original oceanic lithospheric mantle beneath the Canary Islands corresponds to the residues after 25–30% fractional melting of primordial mantle material it is thus significantly more refractory than ‘normal’ mid-ocean ridge basalt (MORB) mantle. The trace element compositions and Sr isotopic ratios of the minerals least affected by metasomatization indicate that the upper mantle beneath the Canary Islands originally formed as highly refractory oceanic lithosphere during the opening of the Atlantic Ocean in the area. During the Canarian intraplate event the upper mantle was metasomatized the metasomatic processes include cryptic metasomatism, resetting of the Sr–Nd isotopic ratios to values within the range of Canary Islands basalts, formation of minor amounts of phlogopite, and melt–wall-rock reactions. The upper mantle beneath Tenerife and La Palma is strongly metasomatized by carbonatitic or carbonaceous melts highly enriched in light rare earth elements (REE) relative to heavy REE, and depleted in Zr–Hf and Ti relative to REE. In the lithospheric mantle beneath Hierro and Lanzarote, metasomatism has been relatively weak, and appears to be caused by high-Si melts producing concave-upwards trace element patterns in clinopyroxene with weak negative Zr and Ti anomalies. Ti–Al–Fe-rich harzburgites/lherzolites, dunites, wehrlites and clinopyroxenites formed from mildly alkaline basaltic melts (similar to those that dominate the exposed parts of the islands), and appear to be mainly restricted to magma conduits the alkali basalt melts have caused only local metasomatism in the mantle wall-rocks of such conduits. The various metasomatic fluids formed as the results of immiscible separations, melt–wall-rock reactions and chromatographic fractionation either from a CO2-rich basaltic primary melt, or, alternatively, from a basaltic and a siliceous carbonatite or carbonaceous silicate melt.
Ultrapotassic rocks and xenoliths from South Tibet: Contrasting styles of interaction between lithospheric mantle and asthenosphere during continental collision
Publisher: Geological Society of America
Date: 08-11-2016
DOI: 10.1130/G38466.1
Fingerprints of metamorphism in chromite: New insights from minor and trace elements
Publisher: Elsevier BV
Date: 12-2014
Trace element characteristics in the diopsides of peridotite xenoliths: a laser ablation-inductively coupled plasma-mass spectrometry study
Publisher: Springer Science and Business Media LLC
Date: 04-1998
DOI: 10.1007/BF02883644
In situ U–Pb Dating and Sr–Nd Isotopic Analysis of Perovskite: Constraints on the Age and Petrogenesis of the Kuruman Kimberlite Province, Kaapvaal Craton, South Africa
Publisher: Oxford University Press (OUP)
Date: 08-09-2012
On the Vp/Vs–Mg# correlation in mantle peridotites: Implications for the identification of thermal and compositional anomalies in the upper mantle
Publisher: Elsevier BV
Date: 2010
Australian laterites reveal mechanisms governing scandium dynamics in the critical zone
Publisher: Elsevier BV
Date: 09-2019
The crust-mantle boundary beneath cratons and craton margins: a transect across the south-west margin of the Kaapvaal craton
Publisher: Elsevier BV
Date: 12-1995
The evolution of lithospheric domains: A new framework to enhance mineral exploration targeting
Publisher: Springer Berlin Heidelberg
Date: 2005
Upper mantle structure beneath eastern Siberia: Evidence from gravity modeling and mantle petrology
Publisher: American Geophysical Union (AGU)
Date: 07-2003
DOI: 10.1029/2002GC000420
Ti3+ in corundum traces crystal growth in a highly reduced magma
Publisher: Springer Science and Business Media LLC
Date: 28-01-2021
DOI: 10.1038/S41598-020-79739-4
Abstract: Aggregates of corundum crystals with skeletal to hopper morphology occur in pyroclastic rocks erupted from Cretaceous basaltic volcanoes on Mt Carmel, N. Israel. The rapid growth of the crystals trapped volumes of the parental Al 2 O 3 -supersaturated melt phenocrysts of tistarite (Ti 2 O 3 ) in the trapped melts indicate crystallization at oxygen fugacities 6–7 log units below the Iron-Wüstite buffer ( f O 2 = ΔIW − 6 to − 7), induced by fluxes of mantle-derived CH 4 -H 2 fluids. Cathodoluminescence images reveal growth zoning within the in idual crystals of the aggregates, related to the substitution of Ti 3+ in the corundum structure. Ti contents are 0.3 wt% initially, then increase first linearly, then exponentially, toward adjacent melt pockets to reach values 2 wt%. Numerical modelling indicates that the first skeletal crystals grew in an open system, from a moving magma. The subsequent linear increase in Ti reflects growth in a partially closed system, with decreasing porosity the exponential increase in Ti close to melt pockets reflects closed-system growth, leading to dramatic increases in incompatible-element concentrations in the residual melts. We suggest that the corundum aggregates grew in melt/fluid conduits diffusion modelling implies timescales of days to years before crystallization was terminated by explosive eruption. These processes probably operate in explosive volcanic systems in several tectonic settings.
Flood basalts and metallogeny: The lithospheric mantle connection
Publisher: Elsevier BV
Date: 2008
μ-FTIR mapping: Distribution of impurities in different types of diamond growth
Publisher: Elsevier BV
Date: 09-2012
Combined U-Pb dating and Sm-Nd studies on lower crustal and mantle xenoliths from the Delegate basaltic pipes, southeastern Australia
Publisher: Springer Science and Business Media LLC
Date: 29-01-1998
Characterization of the metasomatizing agent in the upper mantle beneath the northern Pannonian Basin based on Raman imaging, FIB-SEM, and LA-ICP-MS analyses of silicate melt inclusions in spinel peri
Publisher: Mineralogical Society of America
Date: 05-2021
DOI: 10.2138/AM-2021-7292
Abstract: Silicate melt inclusions (SMI) containing several daughter minerals, residual glass, and a CO2 bubble were analyzed to constrain the composition and evolution of the metasomatic melt present in the upper mantle beneath the Nógrád-Gömör Volcanic Field (NGVF), northern Hungary to southern Slovakia. The SMI were analyzed with a combination of Raman spectroscopy, FIB-SEM, and LA-ICP-MS to identify phases and obtain their volume proportions and major- and trace-element geochemistry. Slicing through the entire volume of the inclusions and collecting geochemical information at each slice with FIB-SEM allowed us to model the 3D appearance of the phases within the SMI and to use this information to calculate bulk major-element compositions. The partially crystallized SMI are hosted in clinopyroxene in a lherzolite xenolith that shows evidence of a metasomatic event that altered the lherzolites to produce wehrlites. Based on bulk compositions, the SMI trapped the metasomatic melt linked to wehrlite formation in the NGVF. The melt is enriched in Fe and has an OIB-like trace-element pattern, which suggests an intraplate mafic melt similar to the host basalt, but with slightly different chemistry. Pre-entrapment evolution and reaction with the lherzolite wall rock produced an intermediate melt composition. Petrogenetic modeling indicates that the melt was generated as a result of a very small degree of partial melting of a garnet lherzolite source. Following entrapment, a volatile bubble exsolved from the residual melt during ascent to shallow depths as suggested by consistent densities of CO2 in vapor bubbles. Small crystals, including sulfates and mica, that formed at the boundary of the bubble and the glass indicate that the exsolved fluid originally contained S and H2O, in addition to CO2.
The trapped fluid phase in upper mantle xenoliths from Victoria, Australia: implications for mantle metasomatism
Publisher: Springer Science and Business Media LLC
Date: 11-1984
DOI: 10.1007/BF00371413
Amphiboles from suprasubduction and intraplate lithospheric mantle
Publisher: Elsevier BV
Date: 11-2007
Carbonate-bearing mantle peridotite xenoliths from Spitsbergen: phase relationships, mineral compositions and trace-element residence
Publisher: Springer Science and Business Media LLC
Date: 26-11-1996
Ancient lithosphere domains in ocean basins are key geochemical “reservoirs”
Publisher: Elsevier BV
Date: 08-2006
Geochronology in New South Wales
Publisher: Informa UK Limited
Date: 08-2008
A global review of Hf-Nd isotopes
Publisher: Elsevier BV
Date: 10-2022
Deformation of mantle pyroxenites provides clues to geodynamic processes in subduction zones: Case study of the Cabo Ortegal Complex, Spain
Publisher: Elsevier BV
Date: 08-2017
The Wet but Dry Mantle
Publisher: Geochemical Society
Date: 2020
The density structure of subcontinental lithosphere through time
Publisher: Elsevier BV
Date: 2001
Alkaline magmatism from Kutch, NW India: implications for plume–lithosphere interaction
Publisher: Elsevier BV
Date: 04-2005
Carbonated peridotite xenoliths from Spitsbergen: implications for trace element signature of mantle carbonate metasomatism
Publisher: Elsevier BV
Date: 09-1993
Metasomatic control of hydrogen contents in the layered cratonic mantle lithosphere sampled by Lac de Gras xenoliths in the central Slave craton, Canada
Publisher: Elsevier BV
Date: 10-2020
The Kharamai kimberlite field, Siberia: modification of the lithospheric mantle by the Siberian Trap event
Publisher: Elsevier BV
Date: 04-2005
The evolution of lithospheric mantle beneath the Kalahari Craton and its margins
Publisher: Elsevier BV
Date: 12-2003
The first results of U/Pb dating and isotope geochemical studies of detrital zircons from the neoproterozoic sandstones of the Southern Timan (Djejim-Parma Hill)
Publisher: Pleiades Publishing Ltd
Date: 12-2010
Zircons in mantle xenoliths record the Triassic Yangtze–North China continental collision
Publisher: Elsevier BV
Date: 15-07-2006
Multiple events in oceanic upper mantle
Publisher: Elsevier BV
Date: 08-2006
Orogen architecture and crustal growth from accretion to collision (IGCP#662): Scientific Activities 2018-2019
Publisher: International Union of Geological Sciences
Date: 06-2021
Lithospheric mantle structure and the diamond potential of kimberlites in southern D.R. Congo
Publisher: Elsevier BV
Date: 11-2009
Microinclusions in monocrystalline octahedral diamonds and coated diamonds from Diavik, Slave Craton: Clues to diamond genesis
Publisher: Elsevier BV
Date: 11-2009
Mantle metasomatism beneath western Victoria, Australia: I. Metasomatic processes in Cr-diopside lherzolites
Publisher: Elsevier BV
Date: 02-1988
Episodic refertilization and metasomatism of Archean mantle: evidence from an orogenic peridotite in North Qaidam (NE Tibet, China)
Publisher: Springer Science and Business Media LLC
Date: 03-2015
Ultradeep continental roots and their oceanic remnants: A solution to the geochemical “mantle reservoir” problem?
Publisher: Elsevier BV
Date: 11-2009
Accretion and reworking beneath the North China Craton
Publisher: Elsevier BV
Date: 09-2012
Diachronous decratonization of the Sino-Korean craton: Geochemistry of mantle xenoliths from North Korea
Publisher: Geological Society of America
Date: 09-2010
DOI: 10.1130/G30944.1
In-situ mineralogical interpretation of the mantle geophysical signature of the Gangdese Cu-porphyry mineral system
Publisher: Elsevier BV
Date: 11-2022
Modification of subcontinental lithospheric mantle in SE China
Publisher: Elsevier BV
Date: 08-2006
Paleogeothermal gradients in Australia: Key to 4‐D lithosphere mapping*
Publisher: Informa UK Limited
Date: 10-1998
Melting dynamics of late cretaceous lamprophyres in central Asia suggest a mechanism to explain many continental intraplate basaltic suite magmatic provinces
Publisher: American Geophysical Union (AGU)
Date: 04-2021
DOI: 10.1029/2021JB021663
Abstract: Intraplate small‐volume mafic magmatism is spatially and temporally widespread in central and eastern Asia, but the relevant melting dynamics have remained enigmatic. Here, we report Ar‐Ar ages, mineral and whole‐rock compositions on newly found ∼81 Ma l rophyre dykes from central Asia, aiming to constrain the source characteristics and the melting dynamics in this intraplate setting. Mineral chemistry of the l rophyres shows that pre‐emplacement magmas equilibrated at 970–1060°C (probably at the base of the crust) and contained 1.4–2.1 wt% water. The source region of the l rophyres is shown to have H contents equivalent to H 2 O = ∼150 ppm, and to be lithologically heterogeneous with silica‐deficient pyroxenite embedded in peridotite. Because of the thermodynamic complexities involved in calculating melting scenarios with major elements for such mantle domains, we have conducted a grid search with a forward‐modeling methodology that can simulate the adiabatic decompression melting of a lithologically heterogeneous mantle using incompatible trace elements. The modeling results indicate that original melting occurred at a potential temperature of ∼1400°C under a thinned lithosphere (∼70 km, corresponding to a final melting pressure of 2.3 GPa). Combining these conditions with constraints from regional geology and the tectonic history, the l rophyres are inferred to have formed by decompression melting induced by small‐scale asthenospheric upwellings due to the edge effects under a corrugated lithospheric lower boundary. We suggest that this scenario has global relevance and represents a likely mechanism for the initiation of relatively small‐scale intraplate magmatism within continents.
Volatile-rich Metasomatism in Montferrier Xenoliths (Southern France): Implications for the Abundances of Chalcophile and Highly Siderophile Elements in the Subcontinental Mantle
Publisher: Oxford University Press (OUP)
Date: 21-09-2011
Where was South China in the Rodinia supercontinent?
Publisher: Elsevier BV
Date: 06-2008
Subcontinental lithospheric mantle origin of high niobium/tantalum ratios in eclogites
Publisher: Springer Science and Business Media LLC
Date: 08-06-2008
DOI: 10.1038/NGEO226
Granulite facies xenoliths from the Yuhuashan complex, central Jiangxi, South China: constraints on Late Palaeozoic orogeny and middle‐lower crust components
Publisher: Wiley
Date: 2016
DOI: 10.1111/JMG.12170
Lithosphere mapping beneath the North American plate☆
Publisher: Elsevier BV
Date: 09-2004
Armalcolite-bearing, Ti-rich metasomatic assemblages in harzburgitic xenoliths from the Kerguelen Islands: implications for the oceanic mantle budget of high-field strength elements
Publisher: Elsevier BV
Date: 02-2000
Significance of ancient sulfide PGE and Re-Os signatures in the mantle beneath Calatrava, Central Spain
Publisher: Springer Science and Business Media LLC
Date: 30-07-2014
Feldspar-bearing lherzolite xenoliths in alkali basalts from Hamar-Daban, southern Baikal region, Russia
Publisher: Springer Science and Business Media LLC
Date: 21-11-1995
Laurentian Provenance of Archean Mantle Fragments in the Proterozoic Baltic Crust of the Norwegian Caledonides
Publisher: Oxford University Press (OUP)
Date: 06-04-2012
Thallium isotopes as a potential tracer for the origin of cratonic eclogites
Publisher: Elsevier BV
Date: 12-2009
Trace-element fingerprints of chromite, magnetite and sulfides from the 3.1 Ga ultramafic–mafic rocks of the Nuggihalli greenstone belt, Western Dharwar craton (India)
Publisher: Springer Science and Business Media LLC
Date: 06-2015
Immiscible-melt inclusions in corundum megacrysts: Microanalyses and geological implications
Publisher: Mineralogical Society of America
Date: 04-2021
DOI: 10.2138/AM-2020-7347
Abstract: Controversies on the origin of zircon, corundum, titanomagnetite, and quartz megacrysts in alkali basalts mostly reflect the lack of direct evidence of a “melt reservoir” required for their formation. Various mineral megacrysts are carried up by Cenozoic (mostly younger than 25 Ma) alkali basalts that extend more than 4000 km along eastern China. Here we report unusual inclusions in corundum megacrysts from Changle, and we attribute their origin to the existence of a FeO*-SiO2-Al2O3-ZrO2-rich melt. The inclusions, analyzed using electron microprobe and Raman microscopy, may be ided into two types. Type I inclusions are dominated by glassy materials, may exhibit a dark part in backscattered eletron (BSE) images composed of quartz, corundum, and an amorphous substance (AS-1), and a bright part in BSE images composed of baddeleyite and a second distinct amorphous substance (AS-2). Compared with AS-1, AS-2 has higher concentrations of ZrO2 and FeO* but lower concentrations of Al2O3 and SiO2. We argue that the formation temperature of Type I inclusions is ~1200 °C, and the generation of their bright and dark parts in BSE images may be attributed to the coexistence of immiscible melts. Type II inclusions are composed of zircon, quartz, and an amorphous substance (AS-3). Both types of inclusions might be derived from a similar parent melt, which is FeO*-SiO2-Al2O3-ZrO2-rich. New secondary ion mass spectroscopy (SIMS) in situ U-Pb ages of 18 Ma and 13–14 Ma for zircon inclusions suggest that the corundum megacrysts, occurring in basaltic host rocks distributed along the middle segment of the north and south-trending Tanlu fault zone, formed from precursor residual magmas related to underplating basalts stalled at the crust-mantle boundary, and were brought to the surface by entrainment in later basalts. This study provides new insights into the genesis of the corundum-related megacryst suite.
Uplift of the southeastern Australian lithosphere: Thermal-tectonic evolution of garnet pyroxenite xenoliths from western Victoria
Publisher: Geological Society of America
Date: 2017
Decoupling of U–Pb and Lu–Hf isotopes and trace elements in zircon from the UHP North Qaidam orogen, NE Tibet (China): Tracing the deep subduction of continental blocks
Publisher: Elsevier BV
Date: 12-2012
Constraints from eclogite and MARID xenoliths on origins of mantle Zr/Hf-Nb/Ta variability
Publisher: Springer Science and Business Media LLC
Date: 22-05-2011
Zircon U-Pb, geochemical and isotopic constraints on the age and origin of A- and I-type granites and gabbro-diorites from NW Iran
Publisher: Elsevier BV
Date: 11-2020
Tectonic Switching of Southeast China in the Late Paleozoic
Publisher: American Geophysical Union (AGU)
Date: 10-2018
DOI: 10.1029/2018JB015520
Chromitites in ophiolites: How, where, when, why? Part I. A review and new ideas on the origin and significance of platinum-group minerals
Publisher: Elsevier BV
Date: 02-2014
The Kimberlites and related rocks of the Kuruman Kimberlite Province, Kaapvaal Craton, South Africa
Publisher: Springer Science and Business Media LLC
Date: 25-06-2010
Chromitites in ophiolites: How, where, when, why? Part II. The crystallization of chromitites
Publisher: Elsevier BV
Date: 02-2014
Subduction-related middle Permian to early Triassic magmatism in central Hainan Island, South China
Publisher: Elsevier BV
Date: 10-2018
Metasomatism and sulfide mobility in lithospheric mantle beneath eastern Australia: Implications for mantle Re–Os chronology
Publisher: Elsevier BV
Date: 03-2007
Trace element and isotopic composition of GJ-red zircon standard by laser ablation
Publisher: Elsevier BV
Date: 08-2006
Apatite as an indicator mineral for mineral exploration: trace-element compositions and their relationship to host rock type
Publisher: Elsevier BV
Date: 07-2002
Origin and evolution of topaz-bearing granites from the Nanling Range, South China: a geochemical and Sr–Nd–Hf isotopic study
Publisher: Springer Science and Business Media LLC
Date: 20-02-2007
Element diffusion ability in metasomatic agents and its effect on chemical characteristics of metasomatized peridotites
Publisher: Springer Science and Business Media LLC
Date: 09-2006
Mantle metasomatism beneath western Victoria, Australia: II. Isotopic geochemistry of Cr-diopside lherzolites and Al-augite pyroxenites
Publisher: Elsevier BV
Date: 02-1988
Pyroxenite Xenoliths Record Complex Melt Impregnation in the Deep Lithosphere of the Northwestern North China Craton
Publisher: Oxford University Press (OUP)
Date: 24-07-2020
DOI: 10.1093/PETROLOGY/EGAA079
Abstract: Transformation of refractory cratonic mantle into more fertile lithologies is the key to the fate of cratonic lithosphere. This process has been extensively studied in the eastern North China Craton (NCC) while that of its western part is still poorly constrained. A comprehensive study of newly-found pyroxenite xenoliths from the Langshan area, in the northwestern part of this craton is integrated with a regional synthesis of pyroxenite and peridotite xenoliths to constrain the petrogenesis of the pyroxenites and provide an overview of the processes involved in the modification of the deep lithosphere. The Langshan pyroxenites are of two types, high-Mg# [Mg2+/(Mg2++Fe2+)*100 = ∼90, atomic ratios] olivine-bearing websterites with high equilibration temperatures (880–970 oC), and low-Mg# (70–80) plagioclase-bearing websterites with low equilibration temperatures (550–835 oC). The high-Mg# pyroxenites show trade-off abundances of olivine and orthopyroxene, highly depleted bulk Sr–Nd (εNd = +11·41, 87Sr/86Sr = ∼0·7034) and low clinopyroxene Sr isotopic ratios (mean 87Sr/86Sr = ∼0·703). They are considered to reflect the reaction of mantle peridotites with silica-rich silicate melts derived from the convective mantle. Their depletion in fusible components (e.g., FeO, TiO2 and Na2O) and progressive exhaustion of incompatible elements suggest melt extraction after their formation. The low-Mg# pyroxenites display layered structures, convex-upward rare earth element patterns, moderately enriched bulk Sr–Nd isotopic ratios (εNd = -14·20– -16·74, 87Sr/86Sr = 0·7070–0·7078) and variable clinopyroxene Sr-isotope ratios (87Sr/86Sr = 0·706–0·711). They are interpreted to be crustal cumulates from hypersthene-normative melts generated by interaction between the asthenosphere and heterogeneous lithospheric mantle. Combined with studies on regional peridotite xenoliths, it is shown that the thinning and refertilization of the lithospheric mantle was accompanied by crustal rejuvenation and that such processes occurred ubiquitously in the northwestern part of the NCC. A geodynamic model is proposed for the evolution of the deep lithosphere, which includes long-term mass transfer through a mantle wedge into the deep crust from the Paleozoic to the Cenozoic, triggered by subduction of the Paleo-Asian Ocean and the Late Mesozoic lithospheric extension of eastern Asia.
Isotopic decoupling during porous melt flow: A case-study in the Lherz peridotite
Publisher: Elsevier BV
Date: 03-2009
Origin and geological significance of Paleoproterozoic granites in the northeastern Cathaysia Block, South China
Publisher: Elsevier BV
Date: 07-2014
Thermal and petrological structure of the lithosphere beneath Hannuoba, Sino-Korean Craton, China: evidence from xenoliths
Publisher: Elsevier BV
Date: 04-0004
Reworking of old continental lithosphere
Publisher: Elsevier BV
Date: 02-2020
Transfer of Os isotopic signatures from peridotite to chromitite in the subcontinental mantle: Insights from in situ analysis of platinum-group and base-metal minerals (Ojén peridotite massif, southern Spain)
Publisher: Elsevier BV
Date: 04-2013
Noble gases in anhydrous lherzolites from the newer volcanics, southeastern Australia: a MORB-like reservoir in the subcontinental mantle
Publisher: Elsevier BV
Date: 07-1998
Distribution of high field strength and rare earth elements in mantle and lower crustal xenoliths from the Southwestern United States: The role of grain-boundary phases
Publisher: Elsevier BV
Date: 10-2004
Goldschmidt Abstracts 2007- XYZ
Publisher: Elsevier BV
Date: 08-2007
Crustal evolution in the central Congo-Kasai Craton, Luebo, D.R. Congo: Insights from zircon U–Pb ages, Hf-isotope and trace-element data
Publisher: Elsevier BV
Date: 04-2009
Provenance of Lower Cretaceous Wölong Volcaniclastics in the Tibetan Tethyan Himalaya: Implications for the final breakup of Eastern Gondwana
Publisher: Elsevier BV
Date: 2010
Thermobarometry and P–T–t paths: the granulite to eclogite transition in lower crustal xenoliths from eastern Australia
Publisher: Wiley
Date: 05-1991
Laurite and zircon from the Finero chromitites (Italy): New insights into evolution of the subcontinental mantle
Publisher: Elsevier BV
Date: 11-2017
Relict Proterozoic basement in the Nanling Mountains (SE China) and its tectonothermal overprinting
Publisher: American Geophysical Union (AGU)
Date: 12-03-2005
DOI: 10.1029/2004TC001652
Plutonic processes in transitional oceanic plateau crust: Structure, age and emplacement of the South Rallier du Baty laccolith, Kerguelen Islands
Publisher: Wiley
Date: 16-06-2020
DOI: 10.1111/TER.12471
Would the lithosphere lie about its age? In situ Re-Os reveals all
Publisher: Virtual Explorer Pty Ltd.
Date: 2003
Archean lithospheric mantle beneath Arkansas: Continental growth by microcontinent accretion
Publisher: Geological Society of America
Date: 12-04-2011
DOI: 10.1130/B30253.1
The origin of fertile enstatite by deep-seated carbonatite metasomatism
Publisher: Elsevier BV
Date: 08-2006
In-situ geochemistry of sulfides in highly metasomatized mantle xenoliths from Kerguelen, southern Indian Ocean
Publisher: Elsevier BV
Date: 12-2012
Corrigendum to “Sulfide in dunite channels reflects long-distance reactive migration of mid-ocean-ridge melts from mantle source to crust: A Re-Os isotopic perspective” (Earth and Planetary Science Letters (2020) 531, (S0012821X19306612), (10.1016/j.epsl.2019.115969))
Publisher: Elsevier BV
Date: 04-2020
Lithospheric mantle evolution beneath northeast Australia
Publisher: Elsevier BV
Date: 07-2011
Vertical depletion of ophiolitic mantle reflects melt focusing and interaction in sub-spreading-center asthenosphere
Publisher: Springer Science and Business Media LLC
Date: 14-11-2022
DOI: 10.1038/S41467-022-34781-W
Abstract: Decompressional melting of asthenosphere under spreading centers has been accepted to produce oceanic lithospheric mantle with vertical compositional variations, but these gradients are much smaller than those observed from ophiolites, which clearly require additional causes. Here we conduct high-density s ling and whole-rock and mineral analyses of peridotites across a Tibetan ophiolitic mantle section (~2 km thick), which shows a primary upward depletion (~12% difference) and local more-depleted anomalies. Thermodynamic modeling demonstrates that these features cannot be produced by decompressional melting or proportional compression of residual mantle, but can be explained by melt-peridotite reaction with lateral melt/rock ratio variations in an upwelling asthenospheric column, producing stronger depletion in the melt-focusing center and local zones. This column splits symmetrically and flows to become the horizontal uppermost lithospheric mantle, characterized by upward depletion and local anomalies. This model provides insights into melt extraction and uppermost-mantle origin beneath spreading centers with high melt fluxes.
Thallium isotopes in Iceland and Azores lavas — Implications for the role of altered crust and mantle geochemistry
Publisher: Elsevier BV
Date: 12-2007
U–Pb and Hf-isotope analyses of zircon from the Kundelungu Kimberlites, D.R. Congo: Implications for crustal evolution
Publisher: Elsevier BV
Date: 06-2007
Parageneses of TiB2in corundum xenoliths from Mt. Carmel, Israel
Publisher: Mineralogical Society of America
Date: 11-2020
DOI: 10.2138/AM-2020-7375
Abstract: Titanium diboride (TiB2) is a minor but common phase in melt pockets trapped in the corundum aggregates that occur as xenoliths in Cretaceous basaltic volcanoes on Mt. Carmel, north Israel. These melt pockets show extensive textural evidence of immiscibility between metallic (Fe-Ti-C-Si) melts, Ca-Al-Mg-Si-O melts, and Ti-(oxy)nitride melts. The metallic melts commonly form spherules in the coexisting oxide glass. Most of the observed TiB2 crystallized from the Fe-Ti-C silicide melts and a smaller proportion from the oxide melts. The parageneses in the melt pockets of the xenoliths require fO2 ≤ ΔIW-6, probably generated through interaction between evolved silicate melts and mantle-derived CH4+H2 fluids near the crust-mantle boundary. Under these highly reducing conditions boron, like carbon and nitrogen, behaved mainly as a siderophile element during the separation of immiscible metallic and oxide melts. These parageneses have implications for the residence of boron in the peridotitic mantle and for the occurrence of TiB2 in other less well-constrained environments such as ophiolitic chromitites.
Petrogenesis of the Yangkou layered garnet-peridotite complex, Sulu UHP terrane, China
Publisher: Mineralogical Society of America
Date: 05-2005
DOI: 10.2138/AM.2005.1706
Apatite Composition: Tracing Petrogenetic Processes in Transhimalayan Granitoids
Publisher: Oxford University Press (OUP)
Date: 03-09-2009
Pressure‐ and stress‐induced fabric transition in olivine from peridotites in the Western Gneiss Region (Norway): implications for mantle seismic anisotropy
Publisher: Wiley
Date: 20-11-2012
DOI: 10.1111/JMG.12011
Proterozoic rejuvenation of the Archean Crust tracked by U–Pb and Hf-isotopes in Detrital Zircon
Publisher: Elsevier BV
Date: 08-2006
Cold plumes trigger contamination of oceanic mantle wedges with continental crust-derived sediments: Evidence from chromitite zircon grains of eastern Cuban ophiolites
Publisher: Elsevier BV
Date: 11-2018
In situ Os dating of peridotite xenoliths, Tariat, northern Mongolia
Publisher: Elsevier BV
Date: 08-2006
Goldschmidt Conference Abstracts 2005
Publisher: Elsevier BV
Date: 05-2005
Cr‐pyrope garnets in the lithospheric mantle 2. Compositional populations and their distribution in time and space
Publisher: American Geophysical Union (AGU)
Date: 12-2002
DOI: 10.1029/2002GC000298
Goldschmidt Conference Abstracts 2005
Publisher: Elsevier BV
Date: 05-2005
Neoproterozoic sedimentary rocks track the location of the Lhasa Block during the Rodinia breakup
Publisher: Elsevier BV
Date: 2019
Evolution of the Lüliangshan garnet peridotites in the North Qaidam UHP belt, Northern Tibetan Plateau: Constraints from Re–Os isotopes
Publisher: Elsevier BV
Date: 06-2010
Thermal metamorphism of mantle chromites and the stability of noble-metal nanoparticles
Publisher: Springer Science and Business Media LLC
Date: 30-07-2015
Compositional effects on the solubility of minor and trace elements in oxide spinel minerals: Insights from crystal-crystal partition coefficients in chromite exsolution
Publisher: Mineralogical Society of America
Date: 06-2016
DOI: 10.2138/AM-2016-5611
Unmasking xenolithic eclogites: Progressive metasomatism of a key Roberts Victor sample
Publisher: Elsevier BV
Date: 2013
Multiple Origins of Alluvial Diamonds from New South Wales, Australia
Publisher: Society of Economic Geologists
Date: 2002
Peridotite xenoliths in alkali basalts from the Sikhote-Alin, southeastern Siberia, Russia: trace-element signatures of mantle beneath a convergent continental margin
Publisher: Elsevier BV
Date: 03-1995
The crust of Cathaysia: Age, assembly and reworking of two terranes
Publisher: Elsevier BV
Date: 09-2007
The architecture of the European-Mediterranean lithosphere: A synthesis of the Re-Os evidence
Publisher: Geological Society of America
Date: 05-2013
DOI: 10.1130/G34003.1
Extreme reduction
Publisher: Elsevier BV
Date: 04-2020
Archean crustal evolution in the northern Yilgarn Craton: U–Pb and Hf-isotope evidence from detrital zircons
Publisher: Elsevier BV
Date: 06-2004
The isotopic composition of magnesium in mantle olivine: Records of depletion and metasomatism
Publisher: Elsevier BV
Date: 02-2006
Reply to dunite magma or ultramafic cumulates? A discussion of Griffin et al. “Intrusion and contamination of high-temperature dunite magma: the Nordre Bumandsfjord pluton, Seiland, Arctic Norway”
Publisher: Springer Science and Business Media LLC
Date: 06-10-2013
Multiple events in the Neo-Tethyan oceanic upper mantle: Evidence from Ru-Os-Ir alloys in the Luobusa and Dongqiao ophiolitic podiform chromitites, Tibet
Publisher: Elsevier BV
Date: 09-2007
Nature and timing of metasomatism in the stratified mantle lithosphere beneath the central Slave craton (Canada)
Publisher: Elsevier BV
Date: 08-2013
Widespread Paleoproterozoic basement in the eastern Cathaysia Block: Evidence from metasedimentary rocks of the Pingtan–Dongshan metamorphic belt, in southeastern China
Publisher: Elsevier BV
Date: 10-2016
Re-Os isotopic constraints on the evolution of the Bangong-Nujiang Tethyan oceanic mantle, Central Tibet
Publisher: Elsevier BV
Date: 05-2015
Mechanism and timing of lithospheric modification and replacement beneath the eastern North China Craton: Peridotitic xenoliths from the 100 Ma Fuxin basalts and a regional synthesis
Publisher: Elsevier BV
Date: 11-2007
Cretaceous volcanic-intrusive magmatism in western Guangdong and its geological significance
Publisher: Springer Science and Business Media LLC
Date: 07-2006
Archean sulfide inclusions in Paleozoic zircon megacrysts from the Mir kimberlite, Yakutia: implications for the dating of diamonds
Publisher: Elsevier BV
Date: 05-2002
The continental lithosphere–asthenosphere boundary: Can we sample it?
Publisher: Elsevier BV
Date: 11-2010
Crustal zircons and mantle sulfides: Archean to Triassic events in the lithosphere beneath south-eastern Sicily
Publisher: Elsevier BV
Date: 07-2007
Evolution of Phanerozoic Eastern Australian Lithosphere: Isotopic Evidence for Magmatic and Tectonic Underplating
Publisher: Oxford University Press (OUP)
Date: 30-01-2018
First terrestrial occurrence of tistarite (Ti2O3): Ultra-low oxygen fugacity in the upper mantle beneath Mount Carmel, Israel
Publisher: Geological Society of America
Date: 17-08-2016
DOI: 10.1130/G37910.1
Nature of the lithospheric mantle beneath the eastern part of the Central Asian fold belt: Mantle xenolith evidence
Publisher: Elsevier BV
Date: 12-2000
Ghosts of lithospheres past: Imaging an evolving lithospheric mantle in southern Africa
Publisher: Geological Society of America
Date: 2008
DOI: 10.1130/G24868A.1
Continental-root control on the genesis of magmatic ore deposits
Publisher: Springer Science and Business Media LLC
Date: 13-10-2013
DOI: 10.1038/NGEO1954
Emplacement ages and sources of kimberlites and related rocks in southern Africa: U–Pb ages and Sr–Nd isotopes of groundmass perovskite
Publisher: Springer Science and Business Media LLC
Date: 07-2014
Messengers from the deep: Fossil wadsleyite-chromite microstructures from the Mantle Transition Zone
Publisher: Springer Science and Business Media LLC
Date: 13-11-2015
DOI: 10.1038/SREP16484
Abstract: Investigations of the Mantle Transition Zone (MTZ 410–660 km deep) by deformation experiments and geophysical methods suggest that the MTZ has distinct rheological properties, but their exact cause is still unclear due to the lack of natural s les. Here we present the first direct evidence for crystal-plastic deformation by dislocation creep in the MTZ using a chromitite from the Luobusa peridotite (E. Tibet). Chromite grains show exsolution of diopside and SiO 2 , suggesting previous equilibration in the MTZ. Electron backscattered diffraction (EBSD) analysis reveals that olivine grains co-existing with exsolved phases inside chromite grains and occurring on chromite grain boundaries have a single pronounced crystallographic preferred orientation (CPO). This suggests that olivine preserves the CPO of a high-pressure polymorph (wadsleyite) before the high-pressure polymorph of chromite began to invert and exsolve. Chromite also shows a significant CPO. Thus, the fine-grained high-pressure phases were deformed by dislocation creep in the MTZ. Grain growth in inverted chromite produced an equilibrated microstructure during exhumation to the surface, masking at first sight its MTZ deformation history. These unique observations provide a window into the deep Earth and constraints for interpreting geophysical signals and their geodynamic implications in a geologically robust context.
Zircon U-Pb and Hf isotope constraints on the Mesozoic tectonics and crustal evolution of southern Tibet
Publisher: Geological Society of America
Date: 2006
DOI: 10.1130/G22725.1
Lithospheric memory of subduction in mantle pyroxenite xenoliths from rift-related basalts
Publisher: Elsevier BV
Date: 08-2020
Subduction initiation and back-arc opening north of Neo-Tethys: Evidence from the Late Cretaceous Torbat-e-Heydarieh ophiolite of NE Iran
Publisher: Geological Society of America
Date: 15-10-2019
DOI: 10.1130/B35065.1
Abstract: How new subduction zones form is an ongoing scientific question with key implications for our understanding of how this process influences the behavior of the overriding plate. Here we focus on the effects of a Late Cretaceous subduction-initiation (SI) event in Iran and show how SI caused enough extension to open a back-arc basin in NE Iran. The Late Cretaceous Torbat-e-Heydarieh ophiolite (THO) is well exposed as part of the Sabzevar-Torbat-e-Heydarieh ophiolite belt. It is dominated by mantle peridotite, with a thin crustal sequence. The THO mantle sequence consists of harzburgite, clinopyroxene-harzburgite, plagioclase lherzolite, impregnated lherzolite, and dunite. Spinel in THO mantle peridotites show variable Cr# (10–63), similar to both abyssal and fore-arc peridotites. The igneous rocks (gabbros and dikes intruding mantle peridotite, pillowed and massive lavas, hibole gabbros, plagiogranites and associated diorites, and diabase dikes) display rare earth element patterns similar to MORB, arc tholeiite and back-arc basin basalt. Zircons from six s les, including plagiogranites and dikes within mantle peridotite, yield U-Pb ages of ca. 99–92 Ma, indicating that the THO formed during the Late Cretaceous and was magmatically active for ∼7 m.y. THO igneous rocks have variable εNd(t) of +5.7 to +8.2 and εHf(t) ranging from +14.9 to +21.5 zircons have εHf(t) of +8.1 to +18.5. These isotopic compositions indicate that the THO rocks were derived from an isotopically depleted mantle source similar to that of the Indian Ocean, which was slightly affected by the recycling of subducted sediments. We conclude that the THO and other Sabzevar-Torbat-e-Heydarieh ophiolites formed in a back-arc basin well to the north of the Late Cretaceous fore-arc, now represented by the Zagros ophiolites, testifying that a broad region of Iran was affected by upper-plate extension accompanying Late Cretaceous subduction initiation.
Deep lithosphere of the North China Craton archives the fate of the Paleo-Asian Ocean
Publisher: Elsevier BV
Date: 04-2021
Magma sources and gold mineralisation in the Mount Leyshon and Tuckers Igneous Complexes, Queensland, Australia: U-Pb and Hf isotope evidence
Publisher: Elsevier BV
Date: 03-2008
Tracking the birth and growth of Cimmeria: Geochronology and origins of intrusive rocks from NW Iran
Publisher: Elsevier BV
Date: 11-2020
Discussion: The Sydney Basin: Composition of basement
Publisher: Informa UK Limited
Date: 12-1990
Microcontinents among the accretionary complexes of the Central Asia Orogenic Belt: In situ Re–Os evidence
Publisher: Elsevier BV
Date: 2013
Temporal and genetic relationships between the Kidston gold-bearing Breccia Pipe and the Lochaber Ring Dyke Complex, North Queensland, Australia: insights from in situ U–Pb and Hf-isotope analysis of
Publisher: Springer Science and Business Media LLC
Date: 17-09-2008
Nitrogen under Super-Reducing Conditions: Ti Oxynitride Melts in Xenolithic Corundum Aggregates from Mt Carmel (N. Israel)
Publisher: MDPI AG
Date: 18-07-2021
DOI: 10.3390/MIN11070780
Abstract: Titanium oxynitrides (Ti(N,O,C)) are abundant in xenolithic corundum aggregates in pyroclastic ejecta of Cretaceous volcanoes on Mount Carmel, northern Israel. Petrographic observations indicate that most of these nitrides existed as melts, immiscible with coexisting silicate and Fe-Ti-C silicide melts some nitrides may also have crystallized directly from the silicide melts. The TiN phase shows a wide range of solid solution, taking up 0–10 wt% carbon and 1.7–17 wt% oxygen these have crystallized in the halite (fcc) structure common to synthetic and natural TiN. Nitrides coexisting with silicide melts have higher C/O than those coexisting with silicate melts. Analyses with no carbon fall along the TiN–TiO join in the Ti–N–O phase space, implying that their Ti is a mixture of Ti3+ and Ti2+, while those with 1–3 at.% C appear to be solid solutions between TiN and Ti0.75O. Analyses with at% C have higher Ti2+/Ti3+, reflecting a decrease in fO2. Oxygen fugacity was 6 to 8 log units below the iron–wüstite buffer, at or below the Ti2O3–TiO buffer. These relationships and coexisting silicide phases indicate temperatures of 1400–1100 °C. Ti oxynitrides are probably locally abundant in the upper mantle, especially in the presence of CH4–H2 fluids derived from the deeper metal-saturated mantle.
Southward trench migration at ∼130–120 Ma caused accretion of the Neo-Tethyan forearc lithosphere in Tibetan ophiolites
Publisher: Elsevier BV
Date: 03-2016
Diamond ascent by rift-driven disruption of cratonic mantle keels
Publisher: Research Square Platform LLC
Date: 08-12-2021
DOI: 10.21203/RS.3.RS-986686/V1
Abstract: Diamonds are erupted at Earth’s surface in volatile-rich magmas called kimberlites 1,2,3 . These enigmatic magmas, originating from depths exceeding 150 kilometres in Earth’s mantle 1 , occur in stable cratons and in pulses broadly synchronous with supercontinent cyclicity 4 . Whether their mobilization is driven by mantle plumes 5 or mechanical weakening of cratonic lithosphere 4,6 remains unclear. Here we show that most kimberlites spanning the past billion years erupted approximately 25 million years after the onset of continental fragmentation, suggesting an association with rifting processes. Our dynamic models show that physically steep lithosphere-asthenosphere boundaries formed during terminal rifting (necking) generate convective instabilities in the asthenosphere that slowly migrate many hundreds of kilometres inboard of the rift, causing destabilization of cratonic mantle keel tens of kilometres thick. Displaced lithosphere is replaced by hot, upwelling asthenosphere in the return flow, causing partial melting of carbonated mantle and variable assimilation of lithospheric material. The resulting small-volume kimberlite magmas ascend rapidly and adiabatically, exsolving amounts of carbon dioxide (CO 2 ) that are consistent with independent constraints 7 . Our model reconciles diagnostic kimberlite features including association with cratons and geochemical characteristics that implicate a common asthenospheric mantle source contaminated by cratonic lithosphere 8 . Together, these results provide a quantitative and mechanistic link between kimberlite episodicity and supercontinent cycles via progressive disruption of cratonic keels.
Related Organisations
Related Funding Activities
The Link Between Cratonic Roots, Redox State, And Mantle Geodynamics
Start Date: 2020
End Date: 2024
Funder: Australian Research Council
View Funded ActivityHow Has Continental Lithosphere Evolved? Processes Of Assembly, Growth, Transformation And Destruction
Start Date: 2004
End Date: 2006
Funder: Australian Research Council
View Funded ActivityDiamond Genesis: Cracking The Code For Deep-Earth Processes
Start Date: 2009
End Date: 2011
Funder: Australian Research Council
View Funded ActivityThe Earth System Dynamics Network For A Sustainable Australia
Start Date: 2003
End Date: 2003
Funder: Australian Research Council
View Funded ActivityEarth's Internal System: Deep Processes And Crustal Consequences
Start Date: 2007
End Date: 2009
Funder: Australian Research Council
View Funded ActivityScience Decadal Plans For A Stronger, Healthier, More Prosperous Australia
Start Date: 2014
End Date: 2016
Funder: Australian Research Council
View Funded ActivityNanoMin: Quantitative Mineral Mapping Of Nanoscale Processes
Start Date: 2016
End Date: 2016
Funder: Australian Research Council
View Funded ActivityARC Centre Of Excellence For Core To Crust Fluid Systems
Start Date: 2011
End Date: 2017
Funder: Australian Research Council
View Funded ActivityHow Has The Continental Lithosphere Evolved? Processes Of Assembly, Growth, Transformation And Destruction
Start Date: 2002
End Date: 2006
Funder: Australian Research Council
View Funded ActivityComposition, Structure And Evolution Of The Lithospheric Mantle Beneath Southern Africa: Improving Area Selection Criteria For Diamond Exploration
Start Date: 2008
End Date: 2011
Funder: Australian Research Council
View Funded ActivityGeoWulf: An Inference Engine For Complex Earth Systems
Start Date: 2003
End Date: 2003
Funder: Australian Research Council
View Funded ActivityAustralian Membership Of The Integrated Ocean Drilling Program
Start Date: 2008
End Date: 2012
Funder: Australian Research Council
View Funded ActivityGlobal Lithosphere Architecture Mapping
Start Date: 2004
End Date: 2006
Funder: Australian Research Council
View Funded ActivityAustralian Membership Of The International Ocean Discovery Program
Start Date: 2014
End Date: 2015
Funder: Australian Research Council
View Funded ActivityA New Generation Noble Gas Mass Spectrometer Facility For Advanced Research In The Earth, Planetary And Environmental Sciences
Start Date: 2007
End Date: 2007
Funder: Australian Research Council
View Funded ActivityGlobal Lithospheric Architecture Mapping II
Start Date: 2007
End Date: 2010
Funder: Australian Research Council
View Funded ActivityFrontiers In Integrated Laser-sampled Trace-element And Isotopic Geoanalysis
Start Date: 2010
End Date: 2010
Funder: Australian Research Council
View Funded ActivityNew Horizons In Geochemical Isotopic Analysis With A New-generation Multicollector Plasma Mass Spectrometer: Towards Unravelling The Deep Earth System
Start Date: 2013
End Date: 2013
Funder: Australian Research Council
View Funded ActivityInstrumentation For Combined Seismic And Electromagnetic Earth Sounding
Start Date: 2006
End Date: 2006
Funder: Australian Research Council
View Funded ActivityA ThermoFinnigan Triton High-sensitivity Thermal Ionisation Mass Spectrometer For Constraining Geoscience Rates And Environmental Processes Via Ra And Os Analysis
Start Date: 2005
End Date: 2005
Funder: Australian Research Council
View Funded ActivityTrace Element Analysis Of Diamond: New Applications To Diamond Fingerprinting And Genesis
Start Date: 2007
End Date: 2008
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0560786
Start Date: 2005
End Date: 12-2005
Amount: $495,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP0984852
Start Date: 2009
End Date: 12-2011
Amount: $397,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP0774887
Start Date: 2007
End Date: 12-2009
Amount: $151,249.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE100100095
Start Date: 10-2010
End Date: 12-2012
Amount: $700,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP0453789
Start Date: 2004
End Date: 12-2006
Amount: $450,000.00
Funder: Australian Research Council
View Funded ActivityLinkage - International - Grant ID: LX0454282
Start Date: 2004
End Date: 06-2007
Amount: $120,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE160100155
Start Date: 03-2016
End Date: 06-2019
Amount: $648,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0882854
Start Date: 03-2008
End Date: 09-2013
Amount: $6,000,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP0770929
Start Date: 2007
End Date: 12-2010
Amount: $690,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0346878
Start Date: 2002
End Date: 12-2003
Amount: $190,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP210102196
Start Date: 12-2021
End Date: 12-2024
Amount: $375,000.00
Funder: Australian Research Council
View Funded ActivityLearned Academies Special Projects - Grant ID: LS140100016
Start Date: 10-2014
End Date: 12-2018
Amount: $474,334.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0668155
Start Date: 06-2006
End Date: 06-2007
Amount: $350,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0775533
Start Date: 07-2007
End Date: 12-2011
Amount: $700,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP0776637
Start Date: 07-2007
End Date: 12-2010
Amount: $314,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP0883892
Start Date: 03-2009
End Date: 06-2012
Amount: $355,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE130100099
Start Date: 02-2013
End Date: 12-2015
Amount: $390,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP0210311
Start Date: 2002
End Date: 12-2007
Amount: $1,355,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP220100709
Start Date: 12-2022
End Date: 11-2025
Amount: $490,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE140100047
Start Date: 2014
End Date: 12-2016
Amount: $3,600,000.00
Funder: Australian Research Council
View Funded ActivitySpecial Research Initiatives - Grant ID: SR0354605
Start Date: 12-2003
End Date: 12-2004
Amount: $10,000.00
Funder: Australian Research Council
View Funded ActivityARC Centres Of Excellence - Grant ID: CE1101017
Start Date: 06-2011
End Date: 12-2018
Amount: $12,400,000.00
Funder: Australian Research Council
View Funded Activity