A5079395428- Geological and Geochemical Analysis
- High-pressure geophysics and materials
- earthquake and tectonic studies
- Geochemistry and Geologic Mapping
- Advanced Materials Characterization Techniques
- Metal Extraction and Bioleaching
- Planetary Science and Exploration
- Astro and Planetary Science
- Minerals Flotation and Separation Techniques
- Radioactive element chemistry and processing
- Geochemistry and Elemental Analysis
- Geology and Paleoclimatology Research
- Mineralogy and Gemology Studies
- Nuclear materials and radiation effects
- Geological and Geophysical Studies
- Mineral Processing and Grinding
- Paleontology and Stratigraphy of Fossils
- Ion-surface interactions and analysis
- Geotechnical and Geomechanical Engineering
- Hydrogen embrittlement and corrosion behaviors in metals
- Geological and Geophysical Studies Worldwide
- Hydrocarbon exploration and reservoir analysis
- Geological Modeling and Analysis
- Crystal Structures and Properties
- Geomagnetism and Paleomagnetism Studies
Curtin University
2016-2025
Planetary Science Institute
2023-2024
University of Edinburgh
2021
American Museum of Natural History
2021
ORCID
2019
ARC Centre of Excellence for Core to Crust Fluid Systems
2013-2016
Australian Research Council
2013
The University of Western Australia
2013
Walter de Gruyter (Germany)
2012
University of Leeds
1993-2001
In a scanning electron microscope (SEM) an beam sets up omni-directional source of scattered electrons within specimen.Diffraction these will occur simultaneously on all lattice planes in the sample and backscattered (BSE), which escape from specimen, form diffraction pattern that can be imaged phosphor screen.This is basis backscatter (EBSD).Similar effects cause individual grains different orientations to give total BSE.SEM images exploit this effect show orientation contrast (OC).EBSD OC...
Abstract Evaporation or freezing of water-rich fluids with dilute concentrations dissolved salts can produce brines, as observed in closed basins on Earth 1 and detected by remote sensing icy bodies the outer Solar System 2,3 . The mineralogical evolution these brines is well understood regard to terrestrial environments 4 , but poorly constrained for extraterrestrial systems owing a lack direct sampling. Here we report occurrence salt minerals samples asteroid (101955) Bennu returned...
Abstract The Palaeoproterozoic era was a time of profound change in Earth evolution and represented perhaps the first supercontinent cycle, from amalgamation dispersal possible Neoarchaean to formation 1.9–1.8 Ga Nuna. This although currently lacking palaeogeographic detail, can principle provide contextual framework investigate relationships between deep-Earth surface processes. In this article, we graphically summarize secular Earth's core its atmosphere, Mesoproterozoic eras (specifically...
Abstract The link between observed episodicity in ore deposit formation and preservation the supercontinent cycle is well established, but this general framework has not, however, been able to explain a lack of deposits associated with some accretionary orogens during specific periods Earth history. Here we show that there are intriguing correlations styles orogenesis mineral types, context Nuna cycle. Using animated global reconstructions Nuna's assembly initial breakup, integrating...
Auriferous sulfides, most notably pyrite (FeS2) and arsenopyrite (FeAsS), are among the important economic minerals on Earth because they can host large quantities of gold in many world’s major deposits. Here we present first atom probe study distribution to characterize three-dimensional (3D) at nanoscale provide data discriminate competing models for incorporation refractory ores. In contrast that link concentration, is shown be controlled by rate crystal growth, with slow growth promoting...
Atom probe yields geologically meaningful ages from nanoscale Pb-enriched dislocation loops in discordant zircon.
Atom probe tomography (APT) is an analytical technique that provides quantitative three‐dimensional elemental and isotopic analyses at sub‐nanometre resolution across the whole periodic table. Although developed mostly used in materials science semiconductor fields, recent years have seen increasing development application geoscience planetary disciplines. studies demonstrate compositional complexity nanoscale provide fundamental new insights into atom‐scale mechanisms taking place minerals...
Research Article| May 02, 2019 Gold, arsenic, and copper zoning in pyrite: A record of fluid chemistry growth kinetics Ya-Fei Wu; Wu 1State Key Laboratory Geological Processes Mineral Resources School Earth Resources, China University Geosciences, Wuhan 430074, China2School Planetary Sciences, Curtin University, GPO Box U1987, Perth, WA 6845, Australia Search for other works by this author on: GSW Google Scholar Denis Fougerouse; Fougerouse 2School Australia3Geoscience Atom Probe, Advanced...
A large proportion of the critical elements resources Ge, Ga, and In are associated with sphalerite in Pb-Zn ore deposits. Germanium has been proposed to be structurally bound crystal lattice. Using a combination microstructural, geochemical nanoscale observations, we show that Ge can hosted structure as well nanoparticles briartite (Cu2(Zn,Fe)GeS4). The structurally-bound was preserved undeformed grains from Saint-Salvy vein deposit (France), whereas were observed metamorphosed Arre. likely...
Contacts between rocks recording large differences in metamorphic grade are indicative of major tectonic displacements. Low‐ P upon high‐ contacts commonly interpreted as extensional (i.e. material points on either side the contact moved apart relative to palaeo‐horizontal), but dating deformation and metamorphism is essential testing such models. In Western Alps, Piemonte Ophiolite consists eclogites ( T ≈550–600 °C ≈18–20 kbar) structurally beneath greenschist facies ≈400 ≈9 kbar). Mapping...
Research Article| April 01, 2006 Crystal-plastic deformation of zircon: A defect in the assumption chemical robustness Steven M. Reddy; Reddy 1Tectonics Special Centre, Department Applied Geology, Curtin University Technology, GPO Box U1987, Perth, Western Australia 6845, Search for other works by this author on: GSW Google Scholar Nicholas E. Timms; Timms Patrick Trimby; Trimby 2HKL Technology A/S, Majsmarken 1, 9500 Hobro, Denmark Peter D. Kinny; Kinny 3Tectonics Craig Buchan; Buchan Kevin...
Research Article| July 01, 2008 Naturally occurring gold nanoparticles and nanoplates R.M. Hough; Hough * 1CSIRO Exploration Mining, CRCLEME, ARRC, 26 Dick Perry Avenue, Kensington, Perth, Western Australia 6151, E-mail: robert.hough@csiro.au Search for other works by this author on: GSW Google Scholar R.R.P. Noble; Noble G.J. Hitchen; Hitchen R. Hart; Hart 2Centre Materials Research, Curtin University of Technology, P.O. Box U1897, 6845, S.M. Reddy; Reddy 3Institute Geoscience Department...
In northern Calabria (Italy), the metasedimentary succession of Lungro–Verbicaro tectonic unit preserves mineral assemblages suggesting underthrusting to depths in excess 40 km. Internal deformation these rocks occurred continuously during following decompression. Index composition associated with progressively younger fabrics indicates that a substantial part structural evolution took place within blueschist-facies P – T field. Despite their and metamorphic history, Unit preserve...
Abstract– The microstructures of lunar zircon grains from breccia samples 72215, 73215, 73235, and 76295 collected during the Apollo 17 mission have been characterized via optical microscopy, cathodoluminescence imaging, electron backscatter diffraction mapping. These preserve deformation that show a wide range in style complexity. Planar features (PDFs) are documented for first time, occur along {001}, {110}, {112}, typically with 0.1–25 μm spacing. widest PDFs associated {112} contain...
Research Article| November 01, 2015 A terrestrial perspective on using ex situ shocked zircons to date lunar impacts Aaron J. Cavosie; Cavosie 1TIGeR (The Institute for Geoscience Research), Department of Applied Geology, Curtin University, Perth, WA 6102, Australia2NASA Astrobiology Institute, Geoscience, University Wisconsin–Madison, Madison, Wisconsin 53706, USA3Department Puerto Rico–Mayagüez, Mayagüez, Rico 00681, USA Search other works by this author on: GSW Google Scholar Timmons M....
Abstract The Mesoarchaean–Palaeoproterozoic stratigraphic record of the Singhbhum crustal province, eastern India, implies sedimentation and volcanism in a changing tectonic scenario, thus assumes immense geological significance. Although efforts have been made by many researchers past several decades to summarize various aspects critical synthesis issues was long overdue. present contribution is an updated province. We pointed out problematic province that deserve careful scrutiny order...