ORCID Profile
0000-0003-4747-4134
Current Organisations
Monash University
,
Monash University VIC
,
University of Gothenburg
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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 | Marine and Estuarine Ecology (incl. Marine Ichthyology) | Palaeontology (incl. Palynology) | Ore Deposit Petrology | Isotope Geochemistry
ANZSRC Socio-Economic Objective (SEO)
Expanding Knowledge in the Earth Sciences | Oil and Gas Exploration | Expanding Knowledge in the Biological Sciences | Mineral Exploration not elsewhere classified | Ecosystem Assessment and Management of Marine Environments |
Related Links
Publications
Impact of green clay authigenesis on K–Mg–Fe sequestration in marine settings
Publisher: Research Square Platform LLC
Date: 31-08-2021
DOI: 10.21203/RS.3.RS-824230/V1
Abstract: Retrograde clay mineral reactions (i.e., reverse weathering), including glauconite formation, are first-order controls on element (re)cycling vs sequestration in modern and ancient marine sediments. Here, we report substantial K–Mg–Fe sequestration by glauconite formation in shallow marine settings from the Triassic to the Holocene, averaging 4 ± 3 mmol K·cm − ²·kyr − 1 , 4 ± 2 mmol Mg·cm − ²·kyr − 1 and 10 ± 6 mmol Fe·cm − ²·kyr − 1 , which is ~ 2 orders of magnitude higher compared to deep-sea settings. Upscaling of glauconite abundances in shallow-water ( 200 m) environments predicts a global K–Mg–Fe uptake of ~ 0.05–0.06 Tmol K·yr − 1 , ~ 0.04–0.06 Tmol Mg·yr − 1 and ~ 0.11–0.14 Tmol Fe·yr − 1 . We conclude that authigenic clay elemental uptake had a large impact on the global marine K, Mg and Fe cycles throughout Earth`s history, in particular during ‘greenhouse’ periods with sea level highstand. Quantifying authigenic clay formation is key for better understanding past and present geochemical cycling in marine sediments.
Unraveling the histories of Proterozoic shales through in situ Rb-Sr dating and trace element laser ablation analysis
Publisher: Geological Society of America
Date: 2022
DOI: 10.1130/G49187.1
Abstract: Authigenic components in marine sediments are important archives for past environment reconstructions. However, defining reliable age constraints and assessing the effects of post-depositional overprints in Precambrian sequences are challenging. We demonstrate a new laser-based analytical approach that has the potential to rapidly and accurately evaluate the depositional and alteration histories of Proterozoic shales. Our study employs a novel application of in situ Rb-Sr dating coupled with simultaneous trace-element analysis using reaction-cell laser ablation–inductively coupled plasma–tandem mass spectrometry (LA-ICP-MS/MS). We present results from shales sourced from two wells in the Proterozoic McArthur Basin, northern Australia. These rocks have been widely used by previous studies as a key section for ancient biogeochemical and paleo-redox reconstructions. Shales from well UR5 yielded initial 87Sr/86Sr ratios, Rb-Sr ages, and rare earth element plus yttrium (REEY) patterns similar to those of a dolerite s led from the same core. We propose that the UR5 s les chronicle hydrothermal alteration instigated by the dolerite intrusion. In contrast, a correlative shale from well UR6 yielded an age consistent with the expected depositional age (1577 ±56 Ma) with REEY and initial 87Sr/86Sr ratios similar to ca. 1.5 Ga seawater. We suggest that this s le records the minimum depositional age and early marine diagenetic history for this unit. This new technique can date Proterozoic shales quickly, cheaply, and with minimum s le preparation. Importantly, ages are triaged to differentiate between those recording primary marine versus secondary processes. This novel approach provides a potentially powerful tool for dating and fingerprinting the vast array of ancient marine shales for further studies of Earth systems through deep time.
Fit Between Regulatory Focus and Goal Pursuit Strategies on Auditors’ Professional Skepticism
Publisher: Informa UK Limited
Date: 20-01-2023
The F, Cl, Br and I Contents of Reference Glasses
BHVO
‐2G,
BIR
‐1G,
BCR
‐2G,
Publisher: Wiley
Date: 09-08-2016
DOI: 10.1111/GGR.12128
Trace element abundances in rutiles from eclogites and associated garnet mica schists
Publisher: Elsevier BV
Date: 03-2002
Subduction zone forearc serpentinites as incubators for deep microbial life
Publisher: Proceedings of the National Academy of Sciences
Date: 10-04-2017
Abstract: We document organic matter encapsulated in rock clasts from a oceanic serpentinite mud volcano above the Izu–Bonin–Mariana subduction zone (Pacific Ocean). Although we cannot pinpoint the exact origin of the organic matter, chemical analysis of the constituents resembles molecular signatures that could be produced by microbial life deep within or below the mud volcano. Considering the known temperature limit for life, 122 °C, and the subduction zone forearc geotherm where such mud volcanoes are located, we estimate that life could exist as deep as ∼10,000 m below the seafloor. This is considerably deeper than other active serpentinizing regions such as midocean ridges and could have provided sheltered ecosystems for life to survive the more violent phases of Earth’s history.
Testing Nano‐Powder and Fused‐Glass Mineral Reference Materials for In SituRb‐Sr Dating of Glauconite, Phlogopite, Biotite and Feldspar via LA‐ICP‐MS
Publisher: Wiley
Date: 27-12-2022
DOI: 10.1111/GGR.12467
Abstract: Reference materials ( RMs ) with well‐characterised composition are necessary for reliable quantification and quality control of isotopic analyses of geological s les. For in situ Rb‐Sr analysis of silicate minerals via laser ablation inductively coupled plasma tandem mass spectrometry ( LA‐ICP‐MS / MS ) with a collision/reaction cell, there is a general lack of mineral‐specific and matrix‐matched RMs , which limits wider application of this new laser‐based dating technique to certain minerals. In this work, pressed nano‐powder pellets ( NP ) of four RMs , GL‐O (glauconite), Mica‐Mg (phlogopite), Mica‐Fe (biotite) and FK‐N (K‐feldspar), were analysed and tested for in situ Rb‐Sr dating, complemented by isotope dilution ( ID ) MC‐ICP‐MS Rb‐Sr analyses of GL‐O and Mica‐Mg . In addition, we attempted to develop alternative flux‐free and fused ‘mineral glasses’ from the above RMs for in situ Rb‐Sr dating applications. Overall, the results of this study showed that among the above RMs only two NP ( Mica‐Mg‐NP and GL‐O‐NP ) were suitable and robust for in situ dating applications. These two nano‐powder reference materials, Mica‐Mg‐NP and GL‐O‐NP , were thus used as primary RMs to normalise and determine Rb‐Sr ages for three natural minerals: MDC phlogopite and GL‐O glauconite grains, and also Mica‐Fe‐NP (biotite). Our in situ analyses of the above RMs yielded Rb‐Sr ages that are in good agreement (within 8%) of published ages, which suggests that both Mica‐Mg‐NP and GL‐O‐NP are suitable RMs for in situ Rb‐Sr dating of phlogopite, glauconite and biotite. However, using secondary RMs is recommended to monitor the quality of the obtained ages.
Interpretation and significance of combined trace element and U–Pb isotopic data of detrital rutile: a case study from late Ordovician sedimentary rocks of Saxo-Thuringia, Germany
Publisher: Springer Science and Business Media LLC
Date: 24-08-2018
Redox induced sulfur-selenium isotope decoupling recorded in pyrite
Publisher: Elsevier BV
Date: 2019
MPI-DING reference glasses for in situ microanalysis: New reference values for element concentrations and isotope ratios
Publisher: American Geophysical Union (AGU)
Date: 02-2006
DOI: 10.1029/2005GC001060
Extremely light Li in orogenic eclogites: The role of isotope fractionation during dehydration in subducted oceanic crust
Publisher: Elsevier BV
Date: 30-03-2003
Impact of green clay authigenesis on element sequestration in marine settings
Publisher: Springer Science and Business Media LLC
Date: 22-03-2022
DOI: 10.1038/S41467-022-29223-6
Abstract: Retrograde clay mineral reactions (reverse weathering), including glauconite formation, are first-order controls on element sequestration in marine sediments. Here, we report substantial element sequestration by glauconite formation in shallow marine settings from the Triassic to the Holocene, averaging 3 ± 2 mmol·cm − ²·kyr −1 for K, Mg and Al, 16 ± 9 mmol·cm − ²·kyr −1 for Si and 6 ± 3 mmol·cm − ²·kyr −1 for Fe, which is ~2 orders of magnitude higher than estimates for deep-sea settings. Upscaling of glauconite abundances in shallow-water (0–200 m) environments predicts a present-day global uptake of ~≤ 0.1 Tmol·yr −1 of K, Mg and Al, and ~0.1–0.4 Tmol·yr −1 of Fe and Si, which is ~half of the estimated Mesozoic elemental flux. Clay mineral authigenesis had a large impact on the global marine element cycles throughout Earth’s history, in particular during ‘greenhouse’ periods with sea level highstand, and is key for better understanding past and present geochemical cycling in marine sediments.
Resubduction of lawsonite eclogite within a serpentinite-filled subduction channel
Publisher: Springer Science and Business Media LLC
Date: 17-07-2020
Mineral paragenesis and sulphide trace element distribution in the metamorphosed Lovisa Zn-Pb deposit, Bergslagen (Sweden), as revealed by 3D X-ray tomography, ore petrography and LA-ICP-MS analysis
Publisher: Elsevier BV
Date: 2022
Revisiting Glauconite Geochronology: Lessons Learned from In Situ Radiometric Dating of a Glauconite-Rich Cretaceous Shelfal Sequence
Publisher: MDPI AG
Date: 27-06-2022
DOI: 10.3390/MIN12070818
Abstract: The scarcity of well-preserved and directly dateable sedimentary sequences is a major impediment to inferring the Earth’s paleo-environmental evolution. The authigenic mineral glauconite can potentially provide absolute stratigraphic ages for sedimentary sequences and constraints on paleo-depositional conditions. This requires improved approaches for measuring and interpreting glauconite formation ages. Here, glauconite from a Cretaceous shelfal sequence (Langenstein, northern Germany) was characterized using petrographical, geochemical (EMP), andmineralogical (XRD) screening methods before in situ Rb-Sr dating via LA-ICP-MS/MS. The obtained glauconite ages (~101 to 97 Ma) partly overlap with the depositional age of the Langenstein sequence (±3 Ma), but without the expected stratigraphic age progression, which we attribute to detrital and diagenetic illitic phase impurities inside the glauconites. Using a novel age deconvolution approach, which combines the new Rb-Sr dataset with published K-Ar ages, we recalculate the glauconite bulk ages to obtain stratigraphically significant ‘pure’ glauconite ages (~100 to 96 Ma). Thus, our results show that pristine ages can be preserved in mineralogically complex glauconite grains even under burial diagenetic conditions (T 65 °C m depth), confirming that glauconite could be a suitable archive for paleo-environmental reconstructions and direct sediment dating.
Sodic pyroxene and sodic amphibole as potential reference materials for in situ lithium isotope determinations by SIMS
Publisher: Wiley
Date: 09-2008
Silurian anorogenic basic and acidic magmatism in Northwest Turkey: Implications for the opening of the Paleo-Tethys
Publisher: Elsevier BV
Date: 03-2020
Coupled U-Pb and Rb-Sr laser ablation geochronology trace Archean to Proterozoic crustal evolution in the Dharwar Craton, India
Publisher: Elsevier BV
Date: 07-2020
Polymetamorphism in the mainland Lewisian complex, NW Scotland - phase equilibria and geochronological constraints from the Cnoc an t'Sidhean suite
Publisher: Wiley
Date: 24-08-2012
The fate of subducted oceanic slabs in the shallow mantle: Insights from boron isotopes and light element composition of metasomatized blueschists from the Mariana forearc
Publisher: Elsevier BV
Date: 02-2012
Assessment of elemental fractionation and matrix effects during in situ Rb-Sr dating of phlogopite by LA-ICP-MS/MS: implications for the accuracy and precision of mineral ages
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0JA00299B
Abstract: The effect of physical/chemical properties and Rb/Sr elemental fractionation on the accuracy of in situ Rb–Sr dating via LA-ICP-MS/MS.
Blueschist from the Mariana forearc records long-lived residence of material in the subduction channel
Publisher: Elsevier BV
Date: 08-2019
In situ U–Pb rutile dating by LA-ICP-MS: 208Pb correction and prospects for geological applications
Publisher: Springer Science and Business Media LLC
Date: 10-02-2011
Evidence for boron incorporation into the serpentine crystal structure
Publisher: Mineralogical Society of America
Date: 24-06-2011
DOI: 10.2138/AM.2011.3709
Indo-Antarctic derived detritus on the northern margin of Gondwana: evidence for continental-scale sediment transport
Publisher: Wiley
Date: 12-09-2014
DOI: 10.1111/TER.12070
LA-ICP-MS U-Pb dating of detrital rutile and zircon from the Reynolds Range: A window into the Palaeoproterozoic tectonosedimentary evolution of the North Australian Craton
Publisher: Elsevier BV
Date: 12-2014
Consequences of Ethical and Audit Violations: Evidence from the PCAOB Settled Disciplinary Orders
Publisher: Springer Science and Business Media LLC
Date: 19-03-2021
Reply to ‘Comment on The F, Cl, Br and I Contents of Reference Glasses BHVO-2G, BIR-1G, BCR-2G, GSD-1G, GSE-1G, NIST SRM 610 and NIST SRM 612’
Publisher: Wiley
Date: 14-07-2017
DOI: 10.1111/GGR.12177
Related Organisations
Loughborough University Loughborough Sport
Location: United Kingdom of Great Britain and Northern Ireland
Related Funding Activities
Discovery Projects - Grant ID: DP210100462
Start Date: 09-2021
End Date: 09-2025
Amount: $390,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE220100144
Start Date: 2022
End Date: 12-2022
Amount: $389,526.00
Funder: Australian Research Council
View Funded Activity