ORCID Profile
0000-0003-3367-8961
Current Organisation
Curtin University
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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 | Geochronology | Ore Deposit Petrology | Tectonics | Petroleum and Coal Geology | Inorganic Geochemistry | Sedimentology | Geochronology | Geochemistry | Sedimentology | Geotectonics | Igneous and Metamorphic Petrology | Isotope Geochemistry | Marine and Estuarine Ecology (incl. Marine Ichthyology) | Animal Neurobiology | Functional Materials | Mineral Processing/Beneficiation | Crop and Pasture Biochemistry and Physiology | Land Capability and Soil Degradation | Medical Parasitology | Structural Geology | Stratigraphy (incl. Biostratigraphy and Sequence Stratigraphy) |
ANZSRC Socio-Economic Objective (SEO)
Expanding Knowledge in the Earth Sciences | Mineral Exploration not elsewhere classified | Primary Mining and Extraction of Mineral Resources not elsewhere classified | Oil and Gas Exploration | Iron Ore Exploration | Precious (Noble) Metal Ore Exploration | Mining and Extraction of Energy Resources not elsewhere classified | Wheat | Nervous System and Disorders | Earth sciences | Mining and Extraction of Iron Ores | Ecosystem Assessment and Management of Marine Environments | Infectious Diseases
Related Links
Publications
One size does not fit all: Refining zircon provenance interpretations via integrated grain shape, geochronology, and Hf isotope analysis
Publisher: Elsevier BV
Date: 07-2023
Oxygen isotopes in detrital zircons: Insight into crustal recycling during the evolution of the Greenland Shield
Publisher: GeoScienceWorld
Date: 02-2010
DOI: 10.1130/L80.1
Neoproterozoic glaciation in the Proto-Andes: Tectonic implications and global correlation
Publisher: Geological Society of America
Date: 2007
DOI: 10.1130/G23768A.1
An impact melt origin for Earth’s oldest known evolved rocks
Publisher: Springer Science and Business Media LLC
Date: 13-08-2018
Unravelling complex geologic histories using U–Pb and trace element systematics of titanite
Publisher: Elsevier BV
Date: 2019
The affinity of Archean crust on the Yilgarn-Albany-Fraser Orogen boundary: Implications for gold mineralisation in the Tropicana Zone
Publisher: Elsevier BV
Date: 09-2015
Giant impacts and the origin and evolution of continents
Publisher: Springer Science and Business Media LLC
Date: 10-08-2022
DOI: 10.1038/S41586-022-04956-Y
Abstract: Earth is the only planet known to have continents, although how they formed and evolved is unclear. Here using the oxygen isotope compositions of dated magmatic zircon, we show that the Pilbara Craton in Western Australia, Earth's best-preserved Archaean (4.0-2.5 billion years ago (Ga)) continental remnant, was built in three stages. Stage 1 zircons (3.6-3.4 Ga) form two age clusters with one-third recording submantle δ
The crustal architecture of Myanmar imaged through zircon U-Pb, Lu-Hf and O isotopes: Tectonic and metallogenic implications
Publisher: Elsevier BV
Date: 10-2018
Strategies towards statistically robust interpretations of in situ U-Pb zircon geochronology
Publisher: Elsevier BV
Date: 07-2016
Apatite and titanite from the Karrat Group, Greenland; implications for charting the thermal evolution of crust from the U-Pb geochronology of common Pb bearing phases
Publisher: Elsevier BV
Date: 10-2017
The source of Dalradian detritus in the Buchan Block, NE Scotland: application of new tools to detrital datasets
Publisher: Geological Society of London
Date: 05-05-2016
DOI: 10.1144/JGS2016-019
>2.7 Ga metamorphic peridotites from southeast Greenland record the oxygen isotope composition of Archean seawater
Publisher: Elsevier BV
Date: 08-1970
Precise radiometric age establishes Yarrabubba, Western Australia, as Earth’s oldest recognised meteorite impact structure
Publisher: Springer Science and Business Media LLC
Date: 21-01-2020
DOI: 10.1038/S41467-019-13985-7
Abstract: The ~70 km-diameter Yarrabubba impact structure in Western Australia is regarded as among Earth’s oldest, but has hitherto lacked precise age constraints. Here we present U–Pb ages for impact-driven shock-recrystallised accessory minerals. Shock-recrystallised monazite yields a precise impact age of 2229 ± 5 Ma, coeval with shock-reset zircon. This result establishes Yarrabubba as the oldest recognised meteorite impact structure on Earth, extending the terrestrial cratering record back million years. The age of Yarrabubba coincides, within uncertainty, with temporal constraint for the youngest Palaeoproterozoic glacial deposits, the Rietfontein diamictite in South Africa. Numerical impact simulations indicate that a 70 km-diameter crater into a continental glacier could release between 8.7 × 10 13 to 5.0 × 10 15 kg of H 2 O vapour instantaneously into the atmosphere. These results provide new estimates of impact-produced H 2 O vapour abundances for models investigating termination of the Paleoproterozoic glaciations, and highlight the possible role of impact cratering in modifying Earth’s climate.
Time-resolved, defect-hosted, trace element mobility in deformed Witwatersrand pyrite
Publisher: Elsevier BV
Date: 2018
Multitechnique Geochronology of Intrusive and Explosive Activity on Piton des Neiges Volcano, Réunion Island
Publisher: American Geophysical Union (AGU)
Date: 05-2022
DOI: 10.1029/2021GC010214
Abstract: The construction of ocean island basaltic volcanoes consists of a succession of eruptions, intrusions, and metamorphism. These events are often temporally ill‐constrained because the most widely used radiometric dating methods applicable to mafic volcanic rocks (K‐Ar or 40 Ar/ 39 Ar on whole rock or groundmass) are prone to inaccuracy when applied to slowly cooled, altered, or vesicular and aphyric products. Here, we adopt a multitechnique geochronology approach (including zircon U‐Pb, phlogopite 40 Ar/ 39 Ar, zircon and apatite (U‐Th)/He, and zircon double‐dating) to demonstrate its efficacy when applied to basaltic volcanoes. Taking the main volcano of Réunion Island (Piton des Neiges) as a case study, we establish the time of the major plutonic, metamorphic, and explosive events that had resisted previous dating attempts. We document four stages of pluton emplacement and metamorphism at 2,200–2,000 ka, 1,414 ± 8 ka, 665 ± 78 ka, and 150–110 ka, all coinciding with volcanism revival after quiescent intervals. We also date a major Plinian eruption at 188.2 ± 10.4 ka, coeval with the formation age of a large caldera, and, finally, we constrain the last eruption of Piton des Neiges to 27 ka, revising a previous estimate of 12 ka. By resolving several conundrums of Réunion's geological history, our multitechnique geochronology approach reveals that endogenous growth of a volcanic island proceeds as pulses at the beginning of renewed volcanism. We also demonstrate that crosschecking eruptions ages by ersified dating techniques is important to better assess the timing and recurrence of basaltic volcanic activity, with implications for hazard prediction.
U-Pb and Hf isotopic evidence for Neoarchean and Paleoproterozoic basement in the buried northern Gawler Craton, South Australia
Publisher: Elsevier BV
Date: 09-2014
Contrasting Cu–Au and Sn–W granite metallogeny through the zircon record
Publisher: Informa UK Limited
Date: 30-03-2017
Provenance of Neoproterozoic sediments in the Särv nappes (Middle Allochthon) of the Scandinavian Caledonides: LA-ICP-MS and SIMS U–Pb dating of detrital zircons
Publisher: Elsevier BV
Date: 05-2011
A window into an ancient backarc? The magmatic and metamorphic history of the Fraser Zone, Western Australia
Publisher: Elsevier BV
Date: 04-2019
The structure and timing of lateral escape during the Scandian Orogeny: A combined strain and geochronological investigation in Finnmark, Arctic Norwegian Caledonides
Publisher: Elsevier BV
Date: 10-2006
Adding pieces to the puzzle: episodic crustal growth and a new terrane in the northeast Yilgarn Craton, Western Australia
Publisher: Informa UK Limited
Date: 07-2012
The complexity of sediment recycling as revealed by common Pb isotopes in K-feldspar
Publisher: Elsevier BV
Date: 09-2018
The Mesoproterozoic thermal evolution of the Musgrave Province in central Australia — Plume vs. the geological record
Publisher: Elsevier BV
Date: 06-2015
Continental basalts track secular cooling of the mantle and the onset of modern plate tectonics
Publisher: Research Square Platform LLC
Date: 22-04-2021
DOI: 10.21203/RS.3.RS-436896/V1
Abstract: The temperature of the convecting mantle exerts a first-order control on the tectonic behaviour of Earth’s lithosphere. Although the mantle has likely been cooling since the Archaean eon (4.0–2.5 billion years ago), how mantle temperature evolved thereafter is poorly understood. Here, we apply a statistical analysis to secular changes in the alkali index (A.I. = whole-rock (Na2O + K2O)2/(SiO2 – 38) as weight%) of intracontinental basalts globally to constrain the evolution of mantle potential temperature (Tp) over the past billion years. During the early Neoproterozoic, Tp remained relatively constant at ~1450 °C until the Cryogenian (720 to 635 million years ago), when mantle temperature dropped by ~50 °C over million years. This remarkable episode of cooling records the onset of modern-style plate tectonics, which has been suggested to have been triggered by a dramatic increase in the supply of sediments to lubricate trenches during the thawing of the Snowball Earth.
The Finnmarkian Orogeny revisited: An isotopic investigation in eastern Finnmark, Arctic Norway
Publisher: Elsevier BV
Date: 11-2008
Zircon Lu-Hf isotopes and granite geochemistry of the Murchison Domain of the Yilgarn Craton: Evidence for reworking of Eoarchean crust during Meso-Neoarchean plume-driven magmatism
Publisher: Elsevier BV
Date: 09-2012
A new approach to geochronology in very fine-grained sediments
Publisher: Copernicus GmbH
Date: 26-02-2023
DOI: 10.5194/EGUSPHERE-EGU23-16506
Abstract: & & Analyses of the sedimentary record, in particular the origin, routing and timing of deposition, can provide insight into a vast array of different geological processes over Earths history. However, understanding the provenance of very fine-grained sediments, particularly clay minerals, is typically challenging given their difficulty in being precisely dated. Yet the provenance of clay material may potentially provide greater detail on more distal detritus relative to other more conventional sand-sized provenance indicators (e.g. zircon). Triple quadrupole laser ablation inductively coupled plasma mass spectrometry, which allows in-situ Rb-Sr dating, offers several potentially significant advances in the geochronology of fine-grained Rb bearing mineral phases. Nonetheless, dating of very fine-grained sediments, especially those formed in the Phanerozoic after the terrestrial vegetative evolution, is challenged by the inevitable mixing of potentially different generations of Rb bearing minerals within the volume ablated by the laser (~90,000 & #181 m& sup& & /sup& ). Rb-rich minerals will dominate the isotopic budget of any mixture and may help to constrain age components within the s le. In this study, we present in-situ Rb-Sr data of six variably biostratigraphically constrained Paleozoic shale s les from the Barnicardy-1 drill core (Canning Basin, Western Australia). We develop a new Monte-Carlo modelling approach to improve the constraint on Rb-Sr ages by confining the range of initial Sr-ratios from analysed mixtures via a priori knowledge of the s les stratigraphic level. Rb model age components & span& & span& & strong& (& span& ~& /span& & /strong& & /span& & /span& Ma& span& & span& & strong& )& /strong& & /span& & /span& & imply clay detritus was sourced from the Paterson Orogen and helps refine the stratigraphy of the Canning Basin.& &
U–Pb detrital zircon geochronology of the Dalradian Supergroup, Shetland Islands, Scotland: implications for regional correlations and Neoproterozoic–Palaeozoic basin development
Publisher: Geological Society of London
Date: 03-10-2013
DOI: 10.1144/JGS2013-057
Oxygen isotopes in Pilbara Craton zircons support a global increase in crustal recycling at 3.2Ga
Publisher: Elsevier BV
Date: 07-2015
Evidence from the U–Pb–Hf signatures of detrital zircons for a Baltican provenance for basal Old Red Sandstone successions, northern Scottish Caledonides
Publisher: Geological Society of London
Date: 17-03-2021
DOI: 10.1144/JGS2020-241
The burning heart — The Proterozoic geology and geological evolution of the west Musgrave Region, central Australia
Publisher: Elsevier BV
Date: 2015
Linking the Windmill Islands, east Antarctica and the Albany–Fraser Orogen: Insights from U–Pb zircon geochronology and Hf isotopes
Publisher: Elsevier BV
Date: 05-2017
Controlling the morphology of glyco-nanoparticles in water using block copolymer mixtures: the effect on cellular uptake
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5PY01360G
Abstract: Poly[(2-(α- d -mannosyloxy)ethyl acrylate)-block-( n -butyl acrylate)], P(ManA- b -BA), and poly[poly(ethylene glycol) methyl ether acrylate]-block-( n -butyl acrylate)], P(OEGMEA- b -BA) diblock copolymers were mixed at various ratios to generate self-assembled structures of different morphologies.
Strengths and limitations of zircon Lu-Hf and O isotopes in modelling crustal growth
Publisher: Elsevier BV
Date: 04-2016
Timing of collision initiation and location of the Scandian orogenic suture in the Scandinavian Caledonides
Publisher: Wiley
Date: 11-02-2018
DOI: 10.1111/TER.12324
Dating young zircon: A case study from Southeast Asian megacrysts
Publisher: Elsevier BV
Date: 04-2020
Age and significance of voluminous mafic-ultramafic magmatic events in the Murchison Domain, Yilgarn Craton
Publisher: Informa UK Limited
Date: 07-2010
Geochronological constraints on nickel metallogeny in the Lake Johnston belt, Southern Cross Domain
Publisher: Informa UK Limited
Date: 22-07-2014
Feldspar Pb isotope evidence of cryptic impact-driven hydrothermal alteration in the Paleoproterozoic
Publisher: Elsevier BV
Date: 04-2023
Early Silurian magmatism and the Scandian evolution of the Kalak Nappe Complex, Finnmark, Arctic Norway
Publisher: Geological Society of London
Date: 12-2005
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
Preservation of basement architecture in zircon Hf isotope maps
Publisher: Wiley
Date: 14-06-2022
DOI: 10.1111/TER.12607
Abstract: Zircon Hf isotopic mapping has been proposed to image large‐scale lithospheric architecture. Here we present zircon Hf isotope maps of the Proterozoic Albany–Fraser Orogen (AFO) in Western Australia, which records a protracted geological history in both extensional and compressional tectonic regimes. The spatial variation in Hf isotope composition of AFO granites is nearly orthogonal to the dominant crustal fabric. Although the 176 Hf/ 177 Hf compositions are too juvenile to represent direct melts of the Archaean basement, the variability in 176 Hf/ 177 Hf in these AFO magmatic rocks closely mimics the structure of the adjoining Yilgarn Craton. This orogen‐parallel heterogeneity is best illustrated during earliest Palaeoproterozoic magmatic events, which are characterised by low Sr/Y ratios, consistent with tectonic models involving relatively uniform extension along the craton margin during the Palaeoproterozoic. These results demonstrate that regional‐scale zircon Hf variability does not always image coeval lithospheric architecture, but may help illuminate deep basement structure in regions with complex deformation histories.
Neoproterozoic palaeogeography in the North Atlantic Region: Inferences from the Akkajaure and Seve Nappes of the Scandinavian Caledonides
Publisher: Elsevier BV
Date: 04-2011
On the edge: U–Pb, Lu–Hf, and Sm–Nd data suggests reworking of the Yilgarn craton margin during formation of the Albany-Fraser Orogen
Publisher: Elsevier BV
Date: 06-2011
Transformation of an Archean craton margin during Proterozoic basin formation and magmatism: The Albany-Fraser Orogen, Western Australia
Publisher: Elsevier BV
Date: 09-2015
Basement–cover relationships of the Kalak Nappe Complex, Arctic Norwegian Caledonides and constraints on Neoproterozoic terrane assembly in the North Atlantic region
Publisher: Elsevier BV
Date: 02-2008
Proterozoic granulite formation driven by mafic magmatism: An example from the Fraser Range Metamorphics, Western Australia
Publisher: Elsevier BV
Date: 2014
Apatite U–Pb dating and geochemistry of the Kyrgyz South Tian Shan (Central Asia): Establishing an apatite fingerprint for provenance studies
Publisher: Elsevier BV
Date: 11-2020
The answers are blowin' in the wind
Publisher: Geological Society of America
Date: 18-07-2019
DOI: 10.1130/G38000.1
Fault rock lithologies and architecture of the central Alpine fault, New Zealand, revealed by DFDP-1 drilling
Publisher: GeoScienceWorld
Date: 03-02-2015
DOI: 10.1130/L395.1
Magma-driven, high-grade metamorphism in the Sveconorwegian Province, southwest Norway, during the terminal stages of Fennoscandian Shield evolution
Publisher: Geological Society of America
Date: 28-02-2018
DOI: 10.1130/GES01565.1
A Study on the Corrosion Characteristics of Internal Combustion Engine Materials in Second-Generation Jatropha Curcas Biodiesel
Publisher: MDPI AG
Date: 19-07-2021
DOI: 10.3390/EN14144352
Abstract: The corrosiveness of biodiesel affects the fuel processing infrastructure and different parts of an internal combustion (IC) engine. The present study investigates the corrosion behaviour of automotive materials such as stainless steel, aluminium, cast iron, and copper in 20% (B20) and 30% (B30) by volume second-generation Jatropha biodiesel using an immersion test. The results were compared with petro-diesel (B0). Various fuel properties such as the viscosity, density, water content, total acid number (TAN), and oxidation stability were investigated after the immersion test using ASTM D341, ASTM D975, ASTM D445, and ASTM D6751 standards. The morphology of the corroded materials was investigated using optical microscopy and scanning electron microscopy SEM), whereas the elemental analysis was carried out using energy-dispersive X-ray spectroscopy (EDS). The highest corrosion using biodiesel was detected in copper, while the lowest was detected in stainless steel. Using B20, the rate of corrosion in copper and stainless steel was 17% and 14% higher than when using diesel, which further increased to 206% and 86% using B30. After the immersion test, the viscosity, water content, and TAN of biodiesel were increased markedly compared to petro-diesel.
Mesoarchean exhumation of the Akia terrane and a common Neoarchean tectonothermal history for West Greenland
Publisher: Elsevier BV
Date: 09-2018
Regional zircon U-Pb geochronology for the Maniitsoq region, southwest Greenland
Publisher: Springer Science and Business Media LLC
Date: 25-05-2021
DOI: 10.1038/S41597-021-00922-X
Abstract: Zircon U-Pb geochronology places high-temperature geological events into temporal context. Here, we present a comprehensive zircon U-Pb geochronology dataset for the Meso- to Neoarchean Maniitsoq region in southwest Greenland, which includes the Akia Terrane, Tuno Terrane, and the intervening Alanngua Complex. The magmatic and metamorphic processes recorded in these terranes straddle a key change-point in early Earth geodynamics. This dataset comprises zircon U-Pb ages for 121 s les, including 46 that are newly dated. A principal crystallization peak occurs across all three terranes at ca. 3000 Ma, with subordinate crystallization age peaks at 3200 Ma (Akia Terrane and Alanngua Complex only), 2720 Ma and 2540 Ma. Metamorphic age peaks occur at 2990 Ma, 2820–2700 Ma, 2670–2600 Ma and 2540 Ma. Except for one s le, all dated metamorphic zircon growth after the Neoarchean occurred in the Alanngua Complex or within 20 km of its boundaries. This U-Pb dataset provides an important resource for addressing Earth Science topics as erse as crustal evolution, fluid–rock interaction and mineral deposit genesis.
Apatite: a U-Pb thermochronometer or geochronometer?
Publisher: Elsevier BV
Date: 10-2018
Assessing the mechanisms of common Pb incorporation into titanite
Publisher: Elsevier BV
Date: 04-2018
A gradual transition to plate tectonics on Earth between 3.2 to 2.7 billion years ago
Publisher: Wiley
Date: 19-02-2019
DOI: 10.1111/TER.12378
Chapter 44 The Chiquerío Formation, southern Peru
Publisher: Geological Society of London
Date: 2011
DOI: 10.1144/M36.44
Orogenic climax of Earth: The 1.2-1.1 Ga Grenvillian superevent
Publisher: Geological Society of America
Date: 29-04-2013
DOI: 10.1130/G34243.1
Emergence of continents above sea‐level influences sediment melt composition
Publisher: Wiley
Date: 11-05-2021
DOI: 10.1111/TER.12531
Abstract: The Archean‐Proterozoic transition heralded a number of fundamental changes on Earth, including the oxygenation of the atmosphere, a marked emergence of continents above sea‐level, and an increase in δ 18 O of felsic magmas. The potential drivers for the latter are changes in the composition of supracrustal material or increased crustal reworking. Although the onset of subduction‐induced continental collision and associated enhanced crustal recycling could produce high‐δ 18 O felsic magmas, temporally constrained zircon δ 18 O reveals an increase in δ 18 O at ~2.35 Ga that predates the oldest widely recognized supercontinent. In this work, we use the O and Hf isotope ratios of magmatic zircon crystals in Archean and Proterozoic sediment‐derived granitoids of the North China Craton to track the incorporation of supracrustal material into magmas. The results are consistent with a Paleoproterozoic increase of continental freeboard producing sedimentary reservoirs with comparatively elevated δ 18 O that subsequently partially melted to generate the granitoids.
Petrogenesis and Ni-Cu sulphide potential of mafic-ultramafic rocks in the Mesoproterozoic Fraser Zone within the Albany-Fraser Orogen, Western Australia
Publisher: Elsevier BV
Date: 08-2016
Fluid-assisted zircon and monazite growth within a shear zone: a case study from Finnmark, Arctic Norway
Publisher: Springer Science and Business Media LLC
Date: 02-04-2009
Accessories after the facts: Constraining the timing, duration and conditions of high-temperature metamorphic processes
Publisher: Elsevier BV
Date: 11-2016
Constraints on the timing of Scandian deformation and the nature of a buried Grampian terrane under the Caledonides of northwestern Ireland
Publisher: Geological Society of London
Date: 24-05-2013
DOI: 10.1144/JGS2012-106
Processes of crust formation in the early Earth imaged through Hf isotopes from the East Pilbara Terrane
Publisher: Elsevier BV
Date: 08-2017
Detrital zircon signature of the Moine Supergroup, Scotland: Contrasts and comparisons with other Neoproterozoic successions within the circum-North Atlantic region
Publisher: Elsevier BV
Date: 06-2008
Rutile Ages and Thermometry Along a Grenville Anorthosite Pathway
Publisher: American Geophysical Union (AGU)
Date: 02-2023
DOI: 10.1029/2022GC010330
Abstract: The Grenville Orogen, in North America, contains a belt of Proterozoic anorthosite massifs with an episodic emplacement history. These distinctive magmas reflect extensive fractional crystallization of plagioclase from a mafic magma and contain layers dominated by Ti‐bearing minerals including ilmenite and rutile. U‐Pb geochronology and Zr‐in‐rutile analyses from the Lac Malbaie complex in the Saint Urbain area of Quebec help to constrain the tectonothermal history of repeated anorthosite emplacement into the crust. Geologically significant dates were obtained from low‐U ( ppm) rutile in anorthosite drill cores and a boulder. Rutile ages of c. 1158, 1069–1056, and 936–910 Ma are interpreted to reflect variable modification of cooling ages during later intrusion and fluid mobilization events. Zr‐in‐rutile temperatures track higher apparent temperatures of °C in earlier events. Apparently younger rutile grains, and those influenced by fast pathway diffusion, record lower apparent temperatures. The Grenville Orogen comprises major trans‐lithospheric structures that facilitate the repeated bottom‐up transit of mantle‐derived magmas. At depth this led to the emplacement of anorthositic magmas whose thermal pathway is tracked by rutile passing through their Pb blocking temperature during crustal unroofing. This same broad crustal architecture, in the comparatively shallow crust, provided a favorable pathway for top‐down hydrothermal fluids to interact with younger rutile as successive anorthosites were emplaced. Rutile demonstrates that the current crustal section represents the juxtaposition of minerals preserving information from different thermal regimes, retaining vestiges of a protracted history due to incomplete re‐equilibration with subsequent chemical or thermal conditions.
Earth’s first stable continents did not form by subduction
Publisher: Springer Science and Business Media LLC
Date: 27-02-2017
DOI: 10.1038/NATURE21383
Abstract: The geodynamic environment in which Earth's first continents formed and were stabilized remains controversial. Most exposed continental crust that can be dated back to the Archaean eon (4 billion to 2.5 billion years ago) comprises tonalite-trondhjemite-granodiorite rocks (TTGs) that were formed through partial melting of hydrated low-magnesium basaltic rocks notably, these TTGs have 'arc-like' signatures of trace elements and thus resemble the continental crust produced in modern subduction settings. In the East Pilbara Terrane, Western Australia, low-magnesium basalts of the Coucal Formation at the base of the Pilbara Supergroup have trace-element compositions that are consistent with these being source rocks for TTGs. These basalts may be the remnants of a thick (more than 35 kilometres thick), ancient (more than 3.5 billion years old) basaltic crust that is predicted to have existed if Archaean mantle temperatures were much hotter than today's. Here, using phase equilibria modelling of the Coucal basalts, we confirm their suitability as TTG 'parents', and suggest that TTGs were produced by around 20 per cent to 30 per cent melting of the Coucal basalts along high geothermal gradients (of more than 700 degrees Celsius per gigapascal). We also analyse the trace-element composition of the Coucal basalts, and propose that these rocks were themselves derived from an earlier generation of high-magnesium basaltic rocks, suggesting that the arc-like signature in Archaean TTGs was inherited from an ancestral source lineage. This protracted, multistage process for the production and stabilization of the first continents-coupled with the high geothermal gradients-is incompatible with modern-style plate tectonics, and favours instead the formation of TTGs near the base of thick, plateau-like basaltic crust. Thus subduction was not required to produce TTGs in the early Archaean eon.
Conditioned duality of the Earth system: Geochemical tracing of the supercontinent cycle through Earth history
Publisher: Elsevier BV
Date: 09-2016
The tectonic and metallogenic framework of Myanmar: A Tethyan mineral system
Publisher: Elsevier BV
Date: 12-2016
Dating mylonitic overprinting of ancient rocks
Publisher: Springer Science and Business Media LLC
Date: 23-02-2023
DOI: 10.1038/S43247-023-00709-5
Abstract: Deformation in shear zones is difficult to date because mylonites can preserve partially reset pre-existing isotopic signatures. However, mylonites can be key structural elements in terrane recognition, so an accurate estimation of their age is important. Here we determine the in situ Rb–Sr isotopic composition of mica from major NE-SW trending mylonitic zones in the Archean Akia Terrane of Greenland and complement this information with inverse thermal history modelling. Rb–Sr isochrons indicate a dominant age of radiogenic-Sr accumulation in biotite of around 1750 million years (Ma) ago. Yet, magmatic titanite is unreset yielding a U–Pb age of around 2970 Ma. These constraints require that biotite Rb–Sr directly dates mylonitic fabric generation. The 1750 Ma mylonites, associated with the Proterozoic Nagssugtoqidian Orogeny, overprint Archean crust widely regarded as preserving evidence of early Earth horizontal tectonics.
Cryptic Disc Structures Resembling Ediacaran Discoidal Fossils from the Lower Silurian Hellefjord Schist, Arctic Norway
Publisher: Public Library of Science (PLoS)
Date: 26-10-2016
Long-lived, autochthonous development of the archean murchison domain, and implications for yilgarn craton tectonics
Publisher: Elsevier BV
Date: 05-2013
Tracking sediment dispersal during orogenesis: A zircon age and Hf isotope study from the western Amadeus Basin, Australia
Publisher: Elsevier BV
Date: 09-2015
Piggy-back Supervolcanoes—Long-Lived, Voluminous, Juvenile Rhyolite Volcanism in Mesoproterozoic Central Australia
Publisher: Oxford University Press (OUP)
Date: 04-2015
Time-strain evolution of shear zones from petrographically constrained Rb–Sr muscovite analysis
Publisher: Elsevier BV
Date: 2023
Corrigendum to “The burning heart — The Proterozoic geology and geological evolution of the west Musgrave Region, central Australia” [Gondwana Res., Volume 27, Issue 1, January 2015, Pages 64–94]
Publisher: Elsevier BV
Date: 10-2015
Grain size matters: Implications for element and isotopic mobility in titanite
Publisher: Elsevier BV
Date: 06-2016
Discriminating prolonged, episodic or disturbed monazite age spectra: An example from the Kalak Nappe Complex, Arctic Norway
Publisher: Elsevier BV
Date: 04-2016
Zircon U–Pb, Lu–Hf and O isotopes from the 3414 Ma Strelley Pool Formation, East Pilbara Terrane, and the Palaeoarchaean emergence of a cryptic cratonic core
Publisher: Elsevier BV
Date: 02-2019
Secular change in TTG compositions: Implications for the evolution of Archaean geodynamics
Publisher: Elsevier BV
Date: 2019
Giant impacts and the origin and evolution of continents
Publisher: Copernicus GmbH
Date: 15-05-2023
DOI: 10.5194/EGUSPHERE-EGU23-1941
Abstract: Earth is the only planet known to have continents, although how they formed and evolved is not well understood. Using the oxygen isotope compositions (SIMS) of dated magmatic zircon, we show that the Pilbara Craton in Western Australia, Earth& #8217 s best-preserved Archaean (4.0& #8211 .5 Ga) continental remnant, was built in three stages. Stage 1 zircons (3.6& #8211 .4 Ga) form two age clusters with one-third recording submantle & #948 O, indicating crystallization from evolved magmas derived from hydrothermally-altered basaltic crust similar to that in modern-day Iceland. Shallow melting is consistent with giant meteor impacts that typified the first billion years of Earth history. Giant impacts provide a mechanism for fracturing the crust and establishing prolonged hydrothermal alteration by interaction with the globally extensive ocean. A giant impact at around 3.6 Ga, coeval with the oldest low-& #948 O zircon, would have triggered massive mantle melting to produce a thick mafic& #8211 ultramafic nucleus. A second low-& #948 O zircon cluster at around 3.4 Ga is contemporaneous with spherule beds that provide the oldest material evidence for giant impacts on Earth. Stage 2 (3.4& #8211 .0 Ga) zircons mostly have mantle-like & #948 O and crystallized from parental magmas formed near the base of the evolving continental nucleus. Stage 3 ( .0 Ga) zircons have above-mantle & #948 O, indicating efficient recycling of supracrustal rocks. That the oldest felsic rocks formed at 3.9& #8211 .5 Ga, towards the end of the so-called late heavy bombardment, seems unlikely to be a coincidence.
Mafic intrusions in southwestern Australia related to supercontinent assembly or breakup?
Publisher: Informa UK Limited
Date: 08-08-2022
The brittle evolution of a major strike-slip fault associated with granite emplacement: A case study of the Leannan Fault, NW Ireland
Publisher: Geological Society of London
Date: 2008
Detrital zircon fingerprint of the Proto-Andes: Evidence for a Neoproterozoic active margin?
Publisher: Elsevier BV
Date: 10-11-2008
A detective duo; an apatite–zircon case study of the Johnston Complex, Wales
Publisher: Copernicus GmbH
Date: 15-05-2023
DOI: 10.5194/EGUSPHERE-EGU23-1147
Abstract: Determining the crystallization of S-type granitic material can be challenging due to a lack of neoblastic zircon growth (e.g. thin overgrowths) and the potential of large inherited zircon cargos. Coupled apatite& #8211 zircon geochronology can help address such complexities and also clarify post-magmatic thermal history, given the disparate Pb closure temperatures in these minerals. Here we present a case study on the Johnston Complex, a rare outcrop of the Precambrian basement in southern Britain, representing a window into the tectonic regime of Avalonia. Zircon and apatite yield identical U-Pb ages, within uncertainty, of 569 & #177 2 Ma and 576 & #177 11 Ma, respectively. A minor antecrystic zircon core component is identified at 615 & #177 11 Ma. Given the previously reported zircon U-Pb age of 643 Ma, these results demonstrate that the Complex represents a composite suite of plutons along its ca. 20 km length. Zircon Lu-Hf data imply a broadly chondritic source, with model ages consistent with crustal extraction during Rodinia formation. Zircon trace elements are consistent with a calc-alkaline continental magmatic arc setting. Whilst, apatite trace elements demonstrate a sedimentary component within the melt. Combined, these results support arc granite production within the peri-Gondwanan realm during amalgamation of Eastern Avalonia and associates the Johnston Complex to the Cymru subterrane. Importantly, congruent zircon& #8211 apatite ages imply rapid cooling after crystallisation, and that subsequent thermal heating did not exceed the apatite Pb closure temperature.
Evidence from detrital zircons for the existence of continental crust and oceans on the Earth 4.4 Gyr ago
Publisher: Springer Science and Business Media LLC
Date: 1
DOI: 10.1038/35051550
Abstract: No crustal rocks are known to have survived since the time of the intense meteor bombardment that affected Earth between its formation about 4,550 Myr ago and 4,030 Myr, the age of the oldest known components in the Acasta Gneiss of northwestern Canada. But evidence of an even older crust is provided by detrital zircons in metamorphosed sediments at Mt Narryer and Jack Hills in the Narryer Gneiss Terrane, Yilgarn Craton, Western Australia, where grains as old as approximately 4,276 Myr have been found. Here we report, based on a detailed micro-analytical study of Jack Hills zircons, the discovery of a detrital zircon with an age as old as 4,404+/-8 Myr--about 130 million years older than any previously identified on Earth. We found that the zircon is zoned with respect to rare earth elements and oxygen isotope ratios (delta18O values from 7.4 to 5.0%), indicating that it formed from an evolving magmatic source. The evolved chemistry, high delta18O value and micro-inclusions of SiO2 are consistent with growth from a granitic melt with a delta18O value from 8.5 to 9.5%. Magmatic oxygen isotope ratios in this range point toward the involvement of supracrustal material that has undergone low-temperature interaction with a liquid hydrosphere. This zircon thus represents the earliest evidence for continental crust and oceans on the Earth.
Reorganization of continent‐scale sediment routing based on detrital zircon and rutile multi‐proxy analysis
Publisher: Wiley
Date: 30-09-2022
DOI: 10.1111/BRE.12715
Abstract: The duration and extent of sediment routing systems are intrinsically linked to crustal‐ to mantle‐scale processes. Therefore, distinct changes in the geodynamic regime may be captured in the detrital record. This study attempts to reconstruct the sediment routing system of the Canning Basin (Western Australia) during the Early Cretaceous to decipher its depositional response to Mesozoic‐Cenozoic supercontinent dispersal. Specifically, we reconstruct source‐to‐sink relationships for the Broome Sandstone (D ier Peninsula) and proximal modern sediments through multi‐proxy analysis of detrital zircon (U–Pb, Lu–Hf and trace elements) and detrital rutile (U–Pb and trace elements). Multi‐proxy comparison of detrital signatures and potential sources reveals that the majority of the detrital zircon and rutile grains are ultimately sourced from crystalline basement in central Australia (Musgrave Province and Arunta region) and that proximal sediment supply (i.e., Kimberley region) is negligible. However, a significant proportion of detritus might be derived from intermediate sedimentary sources in central Australia (e.g., Amadeus Basin) rather than directly from erosion of crystalline basement. Broome Sandstone data are consistent with a large‐scale drainage system with headwaters in central Australia. Contextualization with other broadly coeval drainage systems suggests that central Australia acted as a major drainage ide during the Early Cretaceous. Importantly, reorganization after supercontinent dispersal is characterized by the continuation of a sediment pathway remnant of an earlier transcontinental routing system originating in Antarctica that provided a template for Early Cretaceous drainage. Review of older Canning Basin strata implies a prolonged denudation history of central Australian lithologies. These observations are consistent with the long‐lived intracontinental tectonic activity of central Australia governing punctuated sediment generation and dispersion more broadly across Australia and emphasize the impact of deep Earth processes on sediment routing systems.
Provenance and Terrane Evolution of the Kalak Nappe Complex, Norwegian Caledonides: Implications for Neoproterozoic Paleogeography and Tectonics
Publisher: University of Chicago Press
Date: 2007
DOI: 10.1086/509247
Geochronological constrains on the timing of magmatism, deformation and mineralization at the Karouni orogenic gold deposit: Guyana, South America
Publisher: Elsevier BV
Date: 02-2019
Find a match with triple-dating: Antarctic sub-ice zircon detritus on the modern shore of Western Australia
Publisher: Elsevier BV
Date: 02-2020
Thin-section detrital zircon geochronology mitigates bias in provenance investigations
Publisher: Geological Society of London
Date: 08-11-2021
DOI: 10.1144/JGS2021-070
Large igneous provinces track fluctuations in subaerial exposure of continents across the Archean–Proterozoic transition
Publisher: Wiley
Date: 21-04-2022
DOI: 10.1111/TER.12594
Abstract: Geological observations and numerical models imply that Archean continents were mostly submarine. In contrast, approximately one third of modern earth's surface area consists of subaerial continental crust. To temporally constrain changes in the subaerial exposure of continents, we evaluate the eruptive environment (submarine vs subaerial) of 3.4–2.0 Ga continental large igneous provinces (LIPs). Our results indicate that up until 2.4 Ga LIPs predominantly erupted onto submerged continents. This period of low freeboard was punctuated by local subaerial eruptions at 2.8–2.7 Ga and 2.5 Ga. From 2.4 Ga–2.2 Ga, extensive subaerial continental volcanism is recorded in six different cratons, supporting widespread subaerial continents at this time. An increase in exposed continental crust significantly impacts atmospheric and oceanic geochemical cycles and the supply of nutrients for marine bioproductivity. Thus, the 2.4–2.2 Ga high‐freeboard conditions may have triggered the earliest global glaciation event and the first significant rise of atmospheric oxygen.
Syn-volcanic cannibalisation of juvenile felsic crust: Superimposed giant 18O-depleted rhyolite systems in the hot and thinned crust of Mesoproterozoic central Australia
Publisher: Elsevier BV
Date: 08-2015
Tectonomagmatic evolution of the Early Ordovician suprasubduction-zone ophiolites of the Trondheim Region, Mid-Norwegian Caledonides
Publisher: Geological Society of London
Date: 13-11-2014
DOI: 10.1144/SP390.11
An Australian source for Pacific-Gondwanan zircons: Implications for the assembly of northeastern Gondwana
Publisher: Geological Society of America
Date: 19-05-2017
DOI: 10.1130/G39152.1
Erratum to: “Granitic magmatism of Grenvillian and late Neoproterozoic age in Finnmark, Arctic Norway—Constraining pre-Scandian deformation in the Kalak Nappe Complex” [J. Precam. Res. 145(2006)24–52]
Publisher: Elsevier BV
Date: 09-2006
Spatio-temporal constraints on lithospheric development in the southwest-central Yilgarn Craton, Western Australia
Publisher: Informa UK Limited
Date: 07-2012
An isotopic perspective on growth and differentiation of Proterozoic orogenic crust: From subduction magmatism to cratonization
Publisher: Elsevier BV
Date: 2017
Thermochronometry constraints on south West Greenland passive continental margin development
Publisher: Springer Science and Business Media LLC
Date: 18-04-2023
DOI: 10.1038/S43247-023-00786-6
Abstract: Passive continental margins (PCMs) represent the interface between the marine and terrestrial realms. However, topographic evolution of PCMs is often difficult to decipher due to paucity of the preserved geological record. Here, we report uranium-thorium-helium ((U-Th)/He) analysis of the Precambrian crystalline basement from southern West Greenland that help constrain the process of rifting between Greenland and North America and contributes to the debate about the West Greenland PCM development. The majority of zircon (U-Th)/He dates (220-580 Ma) imply several kilometres of burial of the basement by Paleozoic (and potentially Mesozoic) sediments. Apatite (U-Th)/He dates (80-230 Ma) record thermal processes associated with extensional tectonism starting in the Late Triassic and passive margin formation in the Early Cretaceous. Our data provide no evidence of thermal activity during Cenozoic times, suggesting that the thermal effects of Paleogene rifting and break-up were negligible and the magnitude of Cenozoic erosion was .5 km in the study area.
The use of detrital zircon data in terrane analysis: A nonunique answer to provenance and tectonostratigraphic position in the Scandinavian Caledonides
Publisher: GeoScienceWorld
Date: 02-11-2017
DOI: 10.1130/L663.1
P-T-t evolution of a large, long-lived, ultrahigh-temperature Grenvillian belt in central Australia
Publisher: Elsevier BV
Date: 09-2015
The Juvenile Hafnium Isotope Signal as a Record of Supercontinent Cycles
Publisher: Springer Science and Business Media LLC
Date: 07-12-2016
DOI: 10.1038/SREP38503
Abstract: Hf isotope ratios measured in igneous zircon are controlled by magmatic source, which may be linked to tectonic setting. Over the 200–500 Myr periodicity of the supercontinent cycle - the principal geological phenomenon controlling prevailing global tectonic style - juvenile Hf signals, i.e. most radiogenic, are typically measured in zircon from granites formed in arc settings (crustal growth), and evolved zircon Hf signals in granites formed in continent-collision settings (crustal reworking). Interrogations of Hf datasets for excursions related to Earth events commonly use the median value, however this may be equivocal due to magma mixing. The most juvenile part of the Hf signal is less influenced by crustal in-mixing, and arguably a more sensitive archive of Earth’s geodynamic state. We analyze the global Hf dataset for this juvenile signal, statistically correlating supercontinent amalgamation intervals with evolved Hf episodes, and breakup leading to re-assembly with juvenile Hf episodes. The juvenile Hf signal is more sensitive to Pangaea and Rodinia assembly, its litude increasing with successive cycles to a maximum with Gondwana assembly which may reflect enhanced subduction-erosion. We demonstrate that the juvenile Hf signal carries important information on prevailing global magmatic style, and thus tectonic processes.
Paleoproterozoic increase in zircon δ18O driven by rapid emergence of continental crust
Publisher: Elsevier BV
Date: 07-2019
The Archean Fortescue large igneous province: A result of komatiite contamination by a distinct Eo-Paleoarchean crust
Publisher: Elsevier BV
Date: 06-2018
Contrasting Granite Metallogeny through the Zircon Record: A Case Study from Myanmar
Publisher: Springer Science and Business Media LLC
Date: 07-04-2017
DOI: 10.1038/S41598-017-00832-2
Abstract: Granitoid-hosted mineral deposits are major global sources of a number of economically important metals. The fundamental controls on magma metal fertility are tectonic setting, the nature of source rocks, and magma differentiation. A clearer understanding of these petrogenetic processes has been forged through the accessory mineral zircon, which has considerable potential in metallogenic studies. We present an integrated zircon isotope (U-Pb, Lu-Hf, O) and trace element dataset from the paired Cu-Au (copper) and Sn-W (tin) magmatic belts in Myanmar. Copper arc zircons have juvenile εHf (+7.6 to +11.5) and mantle-like δ 18 O (5.2–5.5‰), whereas tin belt zircons have low εHf (−7 to −13) and heavier δ 18 O (6.2–7.7‰). Variations in zircon Hf and U/Yb reaffirm that tin belt magmas contain greater crustal contributions than copper arc rocks. Links between whole-rock Rb/Sr and zircon Eu/Eu* highlight that the latter can monitor magma fractionation in these systems. Zircon Ce/Ce* and Eu/Eu* are sensitive to redox and fractionation respectively, and here are used to evaluate zircon sensitivity to the metallogenic affinity of their host rock. Critical contents of Sn in granitic magmas, which may be required for the development of economic tin deposits, are marked by zircon Eu/Eu* values of ca. ≤0.08.
Melting controls on the lutetium–hafnium evolution of Archaean crust
Publisher: Elsevier BV
Date: 02-2018
Devil in the detail; The 1150–1000Ma magmatic and structural evolution of the Ngaanyatjarra Rift, west Musgrave Province, Central Australia
Publisher: Elsevier BV
Date: 12-2010
No evidence for high-pressure melting of Earth’s crust in the Archean
Publisher: Springer Science and Business Media LLC
Date: 05-12-2019
DOI: 10.1038/S41467-019-13547-X
Abstract: Much of the present-day volume of Earth’s continental crust had formed by the end of the Archean Eon, 2.5 billion years ago, through the conversion of basaltic (mafic) crust into sodic granite of tonalite, trondhjemite and granodiorite (TTG) composition. Distinctive chemical signatures in a small proportion of these rocks, the so-called high-pressure TTG, are interpreted to indicate partial melting of hydrated crust at pressures above 1.5 GPa ( km depth), pressures typically not reached in post-Archean continental crust. These interpretations significantly influence views on early crustal evolution and the onset of plate tectonics. Here we show that high-pressure TTG did not form through melting of crust, but through fractionation of melts derived from metasomatically enriched lithospheric mantle. Although the remaining, and dominant, group of Archean TTG did form through melting of hydrated mafic crust, there is no evidence that this occurred at depths significantly greater than the ~40 km average thickness of modern continental crust.
Visualizing the sedimentary response through the orogenic cycle: A multidimensional scaling approach
Publisher: GeoScienceWorld
Date: 16-11-2016
DOI: 10.1130/L479.1
Erratum to “Basement–cover relationships of the Kalak Nappe Complex, Arctic Norwegian Caledonides and constraints on Neoproterozoic terrane assembly in the North Atlantic region” [Precambrian Res. 160
Publisher: Elsevier BV
Date: 08-2009
Analysis of the Ragged Basin, Western Australia: Insights into syn-orogenic basin evolution within the Albany-Fraser Orogen
Publisher: Elsevier BV
Date: 05-2015
Oxygen isotopes trace the origins of Earth's earliest continental crust
Publisher: Springer Science and Business Media LLC
Date: 31-03-2021
DOI: 10.1038/S41586-021-03337-1
Abstract: Much of the current volume of Earth's continental crust had formed by the end of the Archaean eon
Late Neoproterozoic–Silurian tectonic evolution of the Rödingsfjället Nappe Complex, orogen-scale correlations and implications for the Scandian suture
Publisher: Geological Society of London
Date: 26-06-2020
Shocked titanite records Chicxulub hydrothermal alteration and impact age
Publisher: Elsevier BV
Date: 07-2020
A detective duo of apatite and zircon geochronology for East Avalonia, Johnston Complex, Wales
Publisher: Geological Society of London
Date: 05-05-2023
DOI: 10.1144/JGS2022-178
Abstract: The Johnston Complex represents a rare inlier of the Neoproterozoic basement of southern Britain and offers a window into the tectonomagmatic regime of East Avalonia during the assembly of Gondwana. This work presents in situ zircon (U–Pb, Lu–Hf), apatite (U–Pb), and trace element chemistry for both minerals from the complex. Zircon and apatite yield a coeval crystallization age of 570 ± 3 Ma, and a minor antecrystic zircon core component is identified at 615 ± 11 Ma. Zircon Hf data imply a broadly chondritic source, comparable to Nd data from East Avalonia, and T DM 2 model ages of c. 1.5 Ga indicate source extraction during the Mesoproterozoic. Zircon trace element chemistry is consistent with an ensialic calc-alkaline continental arc setting and demonstrates that magmatism was ongoing prior to terrane dispersal at 570 Ma. Apatite trace element chemistry implies a sedimentary component within the melt consistent with voluminous S-type granite production during the formation of Gondwana. The similarity of the ɛHf and geochemistry between both zircon age populations suggest derivation from a uniform source that did not undergo significant modification between 615–570 Ma. Time-constrained apatite–zircon chemistry addresses complexities in dating S-type granitoids (zircon inheritance) and permits inferences on post-magmatic thermal histories. Supplementary material: Zircon U–Pb, Lu–Hf and trace element data, and apatite U–Pb and trace element data are available at 0.6084/m9.figshare.c.6484464
Hf isotopes in detrital and inherited zircons of the Pilbara Craton provide no evidence for Hadean continents
Publisher: Elsevier BV
Date: 05-2015
Age and paleomagnetism of the 1210Ma Gnowangerup–Fraser dyke swarm, Western Australia, and implications for late Mesoproterozoic paleogeography
Publisher: Elsevier BV
Date: 06-2014
Seeing is believing: Visualization of He distribution in zircon and implications for thermal history reconstruction on single crystals
Publisher: American Association for the Advancement of Science (AAAS)
Date: 03-02-2017
Abstract: Inverse modeling of intracrystal (U-Th)/(Pb-He) abundances in in idual zircons constrains the thermal history of Earth’s crust.
Crustal reworking and orogenic styles inferred from zircon Hf isotopes: Proterozoic examples from the North Atlantic region
Publisher: Elsevier BV
Date: 03-2019
Source to sink zircon grain shape: Constraints on selective preservation and significance for Western Australian Proterozoic basin provenance
Publisher: Elsevier BV
Date: 03-2018
Was Baltica part of Rodinia?
Publisher: Wiley
Date: 05-01-2023
DOI: 10.1111/TER.12640
Abstract: Late Ediacaran opening of the Iapetus Ocean is typically considered to reflect separation of Baltica and Laurentia during final breakup of the Rodinia supercontinent, with subsequent closure during the Caledonian Orogeny. However, evidence of the pre‐opening juxtaposition of Baltica and Laurentia is limited to purportedly similar apparent polar wander paths and correlation of Rodinia‐forming orogenic events. We show that a range of existing data do not unequivocally support correlation of these orogens, and that geologic and palaeomagnetic data instead favour separation of Baltica and Laurentia as early as 1.1–1.2 Ga. Furthermore, new detrital zircon U–Pb age and Ar–Ar thermochronological data from Norway point towards an active western Baltican margin throughout most of the Neoproterozoic and early Palaeozoic. These findings are inconsistent with the majority of palaeogeographic reconstructions that place Baltica near the core of the Rodinia supercontinent.
When will it end? Long-lived intracontinental reactivation in central Australia
Publisher: Elsevier BV
Date: 2019
Foreign contemporaries - Unravelling disparate isotopic signatures from Mesoproterozoic Central and Western Australia
Publisher: Elsevier BV
Date: 08-2015
Archean komatiite volcanism controlled by the evolution of early continents
Publisher: Proceedings of the National Academy of Sciences
Date: 23-06-2014
Abstract: Komatiites are rare, ultra-high-temperature (∼1,600 °C) lavas that were erupted in large volumes 3.5–1.5 bya but only very rarely since. They are the signature rock type of a hotter early Earth. However, the hottest, most extensive komatiites have a very restricted distribution in particular linear belts within preserved Archean crust. This study used a combination of different radiogenic isotopes to map the boundaries of Archean microcontinents in space and time, identifying the microplates that form the building blocks of Precambrian cratons. Isotopic mapping demonstrates that the major komatiite belts are located along these crustal boundaries. Subsequently, the evolution of the early continents controlled the location and extent of major volcanic events, crustal heat flow, and major ore deposit provinces.
Early cambrian metamorphic zircon in the Northern Pinjarra Orogen: Implications for the structure of the west Australian craton margin
Publisher: GeoScienceWorld
Date: 15-12-2017
DOI: 10.1130/L569.1
3‐D Characterization of Detrital Zircon Grains and its Implications for Fluvial Transport, Mixing, and Preservation Bias
Publisher: American Geophysical Union (AGU)
Date: 12-2017
DOI: 10.1002/2017GC007278
Nanoscale distribution of Pb in monazite revealed by atom probe microscopy
Publisher: Elsevier BV
Date: 02-2018
Titanite dates crystallization: Slow Pb diffusion during super‐solidus re‐equilibration
Publisher: Wiley
Date: 29-05-2019
DOI: 10.1111/JMG.12489
Abstract: Titanite can be found in rocks of wide compositional range, is reactive, growing or regrowing during metamorphic and hydrothermal events, and is generally amenable to U–Pb geochronology. Experimental evidence suggest that titanite has a closure temperature for Pb ranging from 550 to 650°C, and thus titanite dates are commonly interpreted as cooling ages. However, this view has been challenged in recent years by evidence from natural titanite which suggests the closure temperature may be significantly higher (up to 800°C). Here, we investigate titanite in an enclave of migmatitic gneiss included within a granite intrusion. The titanite crystals exhibit textural features characteristic of fluid‐mediated mass transfer processes on length scales of µm. These textural features are associated with variation in both Pb concentrations and distinct U–Pb isotopic compositions. Zr‐in‐titanite thermometry indicates that modification of the titanite occurred at temperatures in excess of 840°C, in the presence of a high‐ T silicate melt. The Pb concentration gradients preserved in these titanite crystals are used to determine the diffusivity of Pb in titanite under high‐ T conditions. We estimate diffusivities ranging from 2 × 10 −22 to 5 × 10 −25 m 2 /s. These results are significantly lower than experimental data predict yet are consistent with other empirical data on natural titanites, suggesting that Pb diffusivity is similar to that of Sr. Thus our data challenge the wide‐held assumption that U–Pb titanite dates only reflect cooling ages.
Multi-mineral geochronology
Publisher: Springer Science and Business Media LLC
Date: 11-02-2017
Melting of a subduction-modified mantle source: A case study from the Archean Marda Volcanic Complex, central Yilgarn Craton, Western Australia
Publisher: Elsevier BV
Date: 03-2014
Variations in Zircon Provenance Constrain Age and Geometry of an Early Paleozoic Rift in the Pinjarra Orogen, East Gondwana
Publisher: American Geophysical Union (AGU)
Date: 11-2017
DOI: 10.1002/2017TC004696
Cooling and exhumation along the curved Albany-Fraser orogen, Western Australia
Publisher: GeoScienceWorld
Date: 19-08-2016
DOI: 10.1130/L561.1
Directly Dating Plio‐Pleistocene Climate Change in the Terrestrial Record
Publisher: American Geophysical Union (AGU)
Date: 18-04-2023
DOI: 10.1029/2023GL102928
Abstract: Accurate chronology of climatic shifts is critical to understand the controls on landscape and species evolution. Unfortunately, direct dating of continental climate change is hindered by the scarcity of dateable terrestrial products evidencing climatic shifts. Here we use ferruginous indurations from the arid landscapes of the Nullarbor Plain in southern Australia to constrain the timing of Plio‐Pleistocene aridification in the continental realm. We present (U‐Th)/He goethite data implying active induration processes between c. 2.7 and 2.4 Ma. Chemical‐mineralogical and petrographic examination suggests that formation of ferruginous indurations was linked with a decline of the groundwater table, driven by the rapid climatic shift from humid late Pliocene to arid early Pleistocene conditions. Combined with local to global climatic proxies, we conclude that ferruginous indurations are promising targets to obtain absolute ages on landscape evolution to refine continental climatic chronology and improve understanding of the environmental drivers of species ersification and extinction.
Radiogenic heating and craton-margin plate stresses as drivers for intraplate orogeny
Publisher: Wiley
Date: 04-05-2017
DOI: 10.1111/JMG.12249
The late mesoproterozoic - Early neoproterozoic tectonostratigraphic evolution of NW Scotland: The Torridonian revisited
Publisher: Geological Society of London
Date: 05-2007
Not-so-suspect terrane: Constraints on the crustal evolution of the Rudall Province
Publisher: Elsevier BV
Date: 09-2013
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
A persistent Hadean–Eoarchean protocrust in the western Yilgarn Craton, Western Australia
Publisher: Wiley
Date: 03-07-2022
DOI: 10.1111/TER.12610
Abstract: Deciphering the composition and extent of Earth's earliest continents is h ered by the scarcity of preserved Hadean–Eoarchean material. Here, we report U–Pb and Lu–Hf data of detrital zircon from sediments proximal to the Archean Yilgarn Craton in Western Australia. This detrital cargo, in part derived from the crystalline basement of the southwestern Yilgarn Craton and its conjugate terranes, helps to resolve the ancient substrate of the craton. Zircon Hf isotopes point to a Hadean–Eoarchean crustal vestige that has remained isotopically coherent over 2 Gyr of episodic crustal reworking. Geophysical characteristics suggest a distinct 100,000 km 2 region of ancient protocrust beneath much of the western Yilgarn Craton, cropping out in the Narryer Terrane. Comparison with global data reveals similar Hf isotope trends in many other cratons documenting the widespread existence of voluminous protocrust and implying extensive reservoir extraction at c. 4,000–3,800 Ma.
Implications of erosion and bedrock composition on zircon fertility: Examples from South America and Western Australia
Publisher: Wiley
Date: 15-05-2018
DOI: 10.1111/TER.12338
A Laurentian provenance for the Dalradian rocks of north Mayo, Ireland, and evidence for an original basement–cover contact with the underlying Annagh Gneiss Complex
Publisher: Geological Society of London
Date: 23-08-2010
Incremental pluton emplacement during inclined transpression
Publisher: Elsevier BV
Date: 06-2014
Isotopic insight into the Proterozoic crustal evolution of the Rudall Province, Western Australia
Publisher: Elsevier BV
Date: 08-2018
Zircon as a metamorphic timekeeper: A case study from the Caledonides of central Norway
Publisher: Elsevier BV
Date: 09-2018
Structure and timing of Neoarchean gold mineralization in the Southern Cross district (Yilgarn Craton, Western Australia) suggest leading role of late Low-Ca I-type granite intrusions
Publisher: Elsevier BV
Date: 10-2014
Shocked monazite chronometry: integrating microstructural and in situ isotopic age data for determining precise impact ages
Publisher: Springer Science and Business Media LLC
Date: 16-02-2017
Two collisions, two sutures: Punctuated pre-1950Ma assembly of the West Australian Craton during the Ophthalmian and Glenburgh Orogenies
Publisher: Elsevier BV
Date: 09-2011
Reduce or recycle? Revealing source to sink links through integrated zircon–feldspar provenance fingerprinting
Publisher: Wiley
Date: 08-10-2020
DOI: 10.1111/SED.12790
Abstract: The geochemical character of detrital mineral grains carries information that can be used to track sediment generation and transport within the broader context of basin development and crustal evolution. Many provenance studies focus on single minerals, which, as a consequence of different source fertility, survivorship and sediment s le representativeness, generate bias and consequently potentially skew geological interpretations. While a range of approaches has been proposed to either quantify or mitigate some of these biases, a significant limitation associated with the most commonly employed provenance proxy – zircon – remains that the grains are remarkably robust and capable of surviving numerous cycles of erosion, deposition and uplift. Here, same‐s le integration of zircon and feldspar provenance information is used to propose a sediment recycling metric ‘R’. This metric quantifies the degree of relative recycling of distinctive source components through comparison of provenance proxies with similar source region fertilities but different survivorship potential. This approach is applied to a case study of several thousand new zircon U‐Pb ages and K‐feldspar Pb‐isotope ratios from 25 Carboniferous to Palaeogene clastic s les from the poorly studied Wollaston Forland–Clavering Ø region in hydrocarbon prospective north‐east Greenland. Concordant detrital zircon populations are dominated by Palaeoproterozoic ( ca 1.9 to 1.8 Ga) grains ( %), with more minor Palaeozoic, Neo‐Mesoproterozoic and Archean subpopulations. Feldspar grain Pb‐isotope ratios almost entirely ( %) correspond to Caledonian granites ( ca 0.4 Ga). Zircon and feldspar provenance proxies appear decoupled as a consequence of: (i) limited resolvable growth of zircon within Caledonian granites, and more importantly (ii) significant upgrading of recycled zircon components via rift flanking sedimentary basins. Collectively, the integration of detrital mineral proxies with disparate survivorship potentials through sediment cycles (labile first cycle feldspar versus potentially polycyclic zircon) is essential to facilitate more nuanced definition of sediment source regions, routing pathways and basin evolution.
Granitic magmatism of Grenvillian and late Neoproterozoic age in Finnmark, Arctic Norway—Constraining pre-Scandian deformation in the Kalak Nappe Complex
Publisher: Elsevier BV
Date: 03-2006
High-temperature granite magmatism, crust-mantle interaction and the mesoproterozoic intracontinental evolution of the Musgrave Province, Central Australia
Publisher: Oxford University Press (OUP)
Date: 07-04-2011
Nanoscale Isotopic Dating of Monazite
Publisher: Wiley
Date: 27-07-2020
DOI: 10.1111/GGR.12340
Zircon Th/U ratios in magmatic environs
Publisher: Elsevier BV
Date: 2015
Carbonate isotope chemostratigraphy suggests revisions to the geological history of the West Finnmark Caledonides, northern Norway
Publisher: Geological Society of London
Date: 03-2006
Intraplate continental basalts over the past billion years track cooling of the mantle and the onset of modern plate tectonics
Publisher: Elsevier BV
Date: 11-2022
Timing of ophiolite obduction in the Grampian orogen
Publisher: Geological Society of America
Date: 06-10-2010
DOI: 10.1130/B30139.1
Constraints and deception in the isotopic record; The crustal evolution of the west Musgrave Province, central Australia
Publisher: Elsevier BV
Date: 03-2013
Does Zircon Shape Retain Petrogenetic Information?
Publisher: American Geophysical Union (AGU)
Date: 10-2023
DOI: 10.1029/2023GC011018
A new ~3.46 Ga asteroid impact ejecta unit at Marble Bar, Pilbara Craton, Western Australia: A petrological, microprobe and laser ablation ICPMS study
Publisher: Elsevier BV
Date: 07-2016
Buried but preserved: The Proterozoic Arubiddy Ophiolite, Madura Province, Western Australia
Publisher: Elsevier BV
Date: 10-2018
Detrital apatite Lu–Hf and U–Pb geochronology applied to the southwestern Siberian margin
Publisher: Wiley
Date: 18-02-2022
DOI: 10.1111/TER.12580
Abstract: Apatite is increasingly used in sedimentary provenance studies. However, detrital apatite U–Pb geochronology can be challenging due to the presence of non‐radiogenic Pb, its intermediate closure temperature (~350–550°C) and/or age‐resetting by metamorphic/metasomatic processes. The Lu–Hf system in apatite has a higher closure temperature (~675–750°C) and is, therefore, more robust to thermal resetting. Here we present the first detrital apatite Lu–Hf age spectra. We have developed a laser‐ablation Lu–Hf dating technique, using reaction‐cell mass spectrometry, that allows rapid cost‐effective analysis, required for detrital apatite studies. The method is best suited to Precambrian detritus, permitting greater radiogenic Hf ingrowth. Using s les from Siberia, we demonstrate: (1) excellent correlations between U–Pb and Lu–Hf dates for apatites from igneous protoliths and (2) that Lu–Hf dating can detect primary age information in metamorphic grains. Hence, when used in tandem with U–Pb zircon and apatite geochronology, Lu–Hf apatite dating provides a powerful new tool for provenance studies.
Orogenic paleofluid flow recorded by discordant detrital zircons in the Caledonian foreland basin of northern Greenland
Publisher: GeoScienceWorld
Date: 22-01-2015
DOI: 10.1130/L420.1
Tectonic evolution of the Arctic Norwegian Caledonides from a texturally- and structurally-constrained multi-isotopic (Ar-Ar, Rb-Sr, Sm-Nd, U-Pb) study
Publisher: American Journal of Science (AJS)
Date: 02-2007
DOI: 10.2475/02.2007.06
Proterozoic crustal evolution of the Eucla basement, Australia: Implications for destruction of oceanic crust during emergence of Nuna
Publisher: Elsevier BV
Date: 05-2017
A Palaeoproterozoic tectono-magmatic lull as a potential trigger for the supercontinent cycle
Publisher: Springer Science and Business Media LLC
Date: 29-01-2018
Changing of the guards: Detrital zircon provenance tracking sedimentological reorganization of a post‐Gondwanan rift margin
Publisher: Wiley
Date: 06-09-2020
DOI: 10.1111/BRE.12403
Heterogeneously hydrated mantle beneath the late Archean Yilgarn Craton
Publisher: Elsevier BV
Date: 12-2015
Grampian migmatites in the Buchan Block, NE Scotland
Publisher: Wiley
Date: 20-07-2015
DOI: 10.1111/JMG.12147
Tropicana translated
Publisher: Geological Society of London
Date: 22-05-2018
DOI: 10.1144/SP453.6
Zircon grain shape holds provenance information: A case study from southwestern Australia
Publisher: Wiley
Date: 04-05-2019
DOI: 10.1002/GJ.3225
Isotopic constraints on stratigraphy in the central and eastern Yilgarn Craton, Western Australia
Publisher: Informa UK Limited
Date: 07-2012
Th/U ratios in metamorphic zircon
Publisher: Wiley
Date: 16-04-2018
DOI: 10.1111/JMG.12307
Widespread reworking of Hadean-to-Eoarchean continents during Earth’s thermal peak
Publisher: Springer Science and Business Media LLC
Date: 12-01-2021
DOI: 10.1038/S41467-020-20514-4
Abstract: The nature and evolution of Earth’s crust during the Hadean and Eoarchean is largely unknown owing to a paucity of material preserved from this period. However, clues may be found in the chemical composition of refractory minerals that initially grew in primordial material but were subsequently incorporated into younger rocks and sediment during lithospheric reworking. Here we report Hf isotopic data in 3.9 to 1.8 billion year old detrital zircon from modern stream sediment s les from West Greenland, which document successive reworking of felsic Hadean-to-Eoarchean crust during subsequent periods of magmatism. Combined with global zircon Hf data, we show a planetary shift towards, on average, more juvenile Hf values 3.2 to 3.0 billion years ago. This crustal rejuvenation was coincident with peak mantle potential temperatures that imply greater degrees of mantle melting and injection of hot mafic-ultramafic magmas into older Hadean-to-Eoarchean felsic crust at this time. Given the repeated recognition of felsic Hadean-to-Eoarchean diluted signatures, ancient crust appears to have acted as buoyant life-rafts with enhanced preservation-potential that facilitated later rapid crustal growth during the Meso-and-Neoarchean.
Emplacement of the Argyle diamond deposit into an ancient rift zone triggered by supercontinent breakup
Publisher: Springer Science and Business Media LLC
Date: 19-09-2023
Sediment routing and basin evolution in Proterozoic to Mesozoic east Gondwana
Publisher: Elsevier BV
Date: 06-2018
Crustal evolution, intra-cratonic architecture and the metallogeny of an Archaean craton
Publisher: Geological Society of London
Date: 03-12-2013
DOI: 10.1144/SP393.8
Multiple dates in millimetres; diffusion as an explanation for Rb-Sr age discrepancies in biotite
Publisher: Copernicus GmbH
Date: 15-05-2023
DOI: 10.5194/EGUSPHERE-EGU23-2154
Abstract: In situ analysis of the Rb& #8211 Sr isotopic composition of biotite via triple quadropole LA& #8211 ICPMS is an increasingly popular method for constraining the time through the Sr closure temperature in rocks. Although interpreting the radiogenic product can be complicated by various factors that can affect diffusion of Rb and Sr, the role of the different minerals that may be in contact with biotite in regard to local diffusion gradients is poorly understood. In this study, we show the importance of analysing Rb& #8211 Sr isotopic data in the context of detailed petrographic observations, which reveals that the ratios obtained are affected by various diffusion pathways between like material and minerals that preferentially incorporate Sr. The studied s les are metapelites from the Fraser Zone (Western Australia) that have peak metamorphic conditions of about 850 & #176 C and 9 kbar and a history of cryptic biotite Ar-Ar ages of ~1205 Ma, which on face value could imply exhumation rates that are some of the fastest recorded in Earth& #8217 s history. However, new biotite data from in-situ Rb-Sr analysis highlights differences in Sr retentivity. While calculated isochrons may at first yield large errors, sorting based on the location of the grains in terms of surrounding minerals yields a possible solution for varying Sr values skewing the ages in the s le. This results in an average age of 1205 Ma for biotite and sillimanite surrounded grains and 1107 Ma, from biotite and sillimanite surrounded grains and quartz and K-feldspar surrounded grains. This shows that the diffusive properties of Sr between biotite and the surrounding minerals creating variable re-equilibration between the different domains surrounding biotite. The complexities of Sr diffusion within between the various phases are still unknown, but the apparent effect between the surrounding material on the biotite and the measured initial Sr values does play a key factor in the final calculated ages and the interpretations they represent.
Provenance record from Mesoproterozoic-Cambrian sediments of Peary Land, North Greenland: Implications for the ice-covered Greenland Shield and Laurentian palaeogeography
Publisher: Elsevier BV
Date: 04-2009
Low δ18O zircon grains in the Neoarchean Rum Jungle Complex, northern Australia: An indicator of emergent continental crust
Publisher: GeoScienceWorld
Date: 02-2014
DOI: 10.1130/L296.1
Zircon geochronology reveals polyphase magmatism and crustal anatexis in the Buchan Block, NE Scotland: Implications for the Grampian Orogeny
Publisher: Elsevier BV
Date: 11-2017
Mapping temporal and spatial patterns of zircon U-Pb disturbance: A Yilgarn Craton case study
Publisher: Elsevier BV
Date: 12-2017
Older than they look: Cryptic recycled xenotime on detrital zircon
Publisher: Geological Society of America
Date: 05-06-2023
DOI: 10.1130/G51178.1
Abstract: Dating of xenotime outgrowths (XOs) has been used to obtain depositional age constraints on sedimentary sequences devoid of volcanic tuffs and biostratigraphically useful fossils (i.e., most of Earth history). Here, we present geochronological and geochemical data from XOs on detrital zircon from the Early Cretaceous Broome Sandstone, NW Australia. Ages of XOs predate the palynologically constrained deposition of the Broome Sandstone by at least 150 m.y., suggesting that these XOs were detrital and transported together with the zircon to which they are attached. This finding contrasts with the general assumption that XOs are principally authigenic phases. Integration of geochronology and geochemistry links Broome Sandstone XOs to intermediate geological events in the sediment source area. These results emphasize the importance of evaluating a potential detrital origin for XOs because sedimentary transport does not appear to universally destroy nor liberate them from their zircon substrate. Despite this, the study of XOs provides an important means to reconstruct complexities of source-to-sink sediment histories, including intermediate storage and overprinting, e.g., during diagenetic, metamorphic, hydrothermal, and igneous activity. Such information is critical for more holistic geological reconstructions but is not retained within the most applied provenance tool (detrital zircon).
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