A5018373140- Geological and Geochemical Analysis
- Geochemistry and Geologic Mapping
- earthquake and tectonic studies
- High-pressure geophysics and materials
- Geochemistry and Elemental Analysis
- Geological Studies and Exploration
- Nuclear physics research studies
- Hydrocarbon exploration and reservoir analysis
- Radioactive element chemistry and processing
- Paleontology and Stratigraphy of Fossils
- Isotope Analysis in Ecology
- Geology and Paleoclimatology Research
- Particle physics theoretical and experimental studies
- Mineralogy and Gemology Studies
- Geomagnetism and Paleomagnetism Studies
- Advanced Materials Characterization Techniques
- Neutrino Physics Research
- Geological and Geophysical Studies
- Geological Formations and Processes Exploration
- Nuclear Physics and Applications
- Atomic and Molecular Physics
- Geophysical and Geoelectrical Methods
- Pleistocene-Era Hominins and Archaeology
- Astronomical and nuclear sciences
- Radioactive Decay and Measurement Techniques
Curtin University
2015-2024
Macquarie University
2010-2012
Université Paris Cité
2007-2010
Centre National de la Recherche Scientifique
2008-2010
Institut de physique du globe de Paris
2005-2010
Institut de minéralogie, de physique des matériaux et de cosmochimie
2010
Institute of Mineralogy
2002-2007
Laboratoire de Minéralogie & Cosmochimie du Muséum
2007
Russian Academy of Sciences
2003
The Great Oxidation Event (GOE) has been defined as the time interval when sufficient atmospheric oxygen accumulated to prevent generation and preservation of mass-independent fractionation sulphur isotopes (MIF-S) in sedimentary rocks. Existing correlations suggest that GOE was rapid globally synchronous. Here we apply isotope analysis diagenetic sulphides combined with U-Pb Re-Os geochronology document cycle evolution Western Australia spanning GOE. Our data indicate that, from ~2.45 Gyr...
Re‐Os isotope‐dilution geochronology has been widely used to date the timing of molybdenite, pyrite and chalcopyrite formation across a variety geological settings. However, in situ methods have impeded by isobaric interference 187 Re on Os. In using LA‐ICP‐MS/MS shown be useful technique chemically separate Os from Re, as reacts with CH 4 create higher‐mass reaction products, which can then measured minimised Re. application method requires matrix‐matched primary reference materials, e.g.,...
Abstract The North Australian Zinc Belt is the largest zinc-lead province in world, containing three of ten known individual deposits (HYC, Hilton-George Fisher, and Mount Isa). Northern Cordillera America second province, a further two world’s top (Red Dog Howards Pass). Despite this world-class endowment, exploration both mineral provinces during past 2 decades has not been particularly successful, yielding only significant discoveries (Teena, Australia, Boundary, Canada). One most...
Zoned clinopyroxenite-dunite Uralian-Alaskan-type complexes of the Uralian Platinum Belt are source economic platinum deposits.One striking features is a pronounced Pt anomaly, which clearly distinguishes them from cumulate series ophiolite massifs elsewhere, but there still uncertainty regarding nature enrichment and its geodynamic setting.We have studied platinum-group element (PGE) Os isotope systematics minerals, chromitites ultramafic rocks Nizhny Tagil zoned massif in Urals.The...
Lead isotopic compositions of 61 samples (55 galena, one cerussite [PbCO3] and five whole ore samples) from 16 Volcanic Hosted Massive Sulphide (VHMS) deposits in the Urals Orogeny show an range between 17.437 18.111 for 206Pb/204Pb; 15.484 15.630 207Pb/204Pb 37.201 38.027 208Pb/204Pb. data VHMS display a systematic increase ratios across paleo-island arc zone, with fore-arc having least radiogenic lead back-arc most lead. The back model ages according to Stacey–Kramers are close...
In weakly metamorphosed massive sulfide deposits of the Urals (Dergamysh, Yubileynoe, Yaman-Kasy, Molodezhnoe, Valentorskoe, Aleksandrinskoe, Saf’yanovskoe), banded sulfides (ore diagenites) are recognized as products seafloor supergene alteration (halmyrolysis) fine-clastic sediments and further diagenesis leading to formation authigenic mineralization. The ore diagenites subdivided into pyrrhotite-, chalcopyrite-, bornite-, sphalerite-, barite- hematite-rich types. relative contents...
Lead isotopes are a powerful geochemical tracer and popular tool applied across broad range of scientific fields, e.g., earth sciences, archaeology, forensic sciences. Here we present Pb isotope dataset collected from 232 igneous samples, spanning ca. 2.3 million km2 area in southeastern Australia, over 3 billion years Earth history. This contribution provides isotopic maps showing the spatial variability (206Pb/204Pb, 207Pb/204Pb, 208Pb/204Pb), magma source U/Pb Th/U, model ages. The...
A search for $\alpha$ decay of naturally occurring osmium isotopes to the lowest excited levels daughter nuclei has been performed by using an ultra-low-background Broad-Energy Germanium $\gamma$-detector with a volume 112 cm$^3$ and ultra-pure sample mass 118 g at Gran Sasso National Laboratory INFN (Italy). The isotopic composition measured high precision Negative Thermal Ionisation Mass Spectrometry. After 15851 h data taking no effect detected, lower limits on decays were set level $\lim...
Atom probe microscopy (APM) is a relatively new in situ tool for measuring isotope fractions from nanoscale volumes (< 0.01 μm 3 ). We calculate the theoretical detectable difference of an ratio measurement result APM using counting statistics hypothetical data set to be ± 4δ or 0.4% (2 s However, challenges associated with measurements (e.g., peak ranging, hydride formation and isobaric interferences), larger uncertainties if not properly accounted for. evaluate these factors Re‐Os by...