A5031975949- Geological and Geochemical Analysis
- Geochemistry and Geologic Mapping
- earthquake and tectonic studies
- Geological and Geophysical Studies
- Geophysical and Geoelectrical Methods
- High-pressure geophysics and materials
- Geological Studies and Exploration
- Hydrocarbon exploration and reservoir analysis
- Seismic Imaging and Inversion Techniques
- Geological and Geophysical Studies Worldwide
- Geology and Paleoclimatology Research
- Drilling and Well Engineering
- Offshore Engineering and Technologies
- Seismic Waves and Analysis
- Geological Modeling and Analysis
- Geophysical Methods and Applications
- Paleontology and Stratigraphy of Fossils
- Mineral Processing and Grinding
- Geomagnetism and Paleomagnetism Studies
- Mineralogy and Gemology Studies
- Geological formations and processes
- Pleistocene-Era Hominins and Archaeology
- Geotechnical Engineering and Underground Structures
- Pasture and Agricultural Systems
- Yersinia bacterium, plague, ectoparasites research
Geoscience Australia
2015-2024
The University of Western Australia
2011-2024
ACT Government
2018-2024
Geological Survey of Western Australia
2010-2014
Department of Mines and Petroleum
2014
Target (United States)
2013
Goethe University Frankfurt
2006
Significance 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 the signature rock type of a hotter early Earth. However, hottest, most extensive komatiites have restricted distribution particular linear belts within preserved Archean crust. This study used combination different radiogenic isotopes to map boundaries microcontinents space and time, identifying microplates form building blocks...
Abstract The generation of the Earth's continental crust modified composition mantle and provided a stable, buoyant reservoir capable capturing material ultimately preserving ore deposits. Within crust, lithospheric architecture associated cratonic margins are first-order control on camp-scale mineralization. Here we show that evolving crustal Archaean Yilgarn Craton, Western Australia, played key role in controlling localization gold, iron nickel mineralized systems. age source...
Abstract New geological mapping and geochronology in the northeast Yilgarn Craton has changed our understanding of this region. The had previously been divided into a series terranes, with easternmost Eastern Goldfields Superterrane separated from Youanmi Terrane, which forms core protocraton, by Ida Fault zone. was subdivided western Kalgoorlie, central Kurnalpi, eastern Burtville latter, terrane focus new field geochronology. Four main episodes greenstone crustal growth have recognised...
Iron oxide copper-gold (IOCG) deposits are consequences of lithospheric- to deposit-scale earth processes, and form where there was a coincidence ore-forming processes in space time. Building on previous conceptualisations we view 'mineral system' as an geological system which four components required have operated efficiently coincidentally, namely: (1) available sources ore metals (i.e., copper, gold, uranium, rare-earth elements) hydrothermal fluids; (2) energy drive fluids the system;...
SUMMARY In recent years, there has been a considerable expansion of deployments portable seismic stations across Australia, which have analysed by receiver function or autocorrelation methods to extract estimates Moho depth. An ongoing program full-crustal reflection profiles now provided more than 25 000 km transects that interpreted for structure. The data set is further augmented extensive marine results. These new sources combined with earlier refraction and results provide full...
The footprint of a mineral system is potentially detectable at range scales and lithospheric depths, reflecting the size distribution its components. Magnetotellurics one few techniques that can provide multiscale data sets to image understand systems. We have used long-period from Australian Lithospheric Architecture Magnetotelluric Project (AusLAMP) as first-order reconnaissance survey resolve large-scale architecture for mapping areas potential in northern Australia. 3-D resistivity model...
The Archean western Yilgarn Craton contains an extensive record of supracrustal formation from ca 3730 to 2675 Ma, as well evidence ensialic crustal component old 4400 Ma. These features make the one oldest provinces on Earth and ideal for study evolution. Spatial analysis new collated U–Pb age data define three broad pulses granite emplacement at 3000–2820, 2805–2720 2720–2600 with a period regional quiescence 2820–2805 Within these pulses, major peaks in production are defined 2920, 2890,...
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...
We present a resistivity model of the southern Tasmanides southeastern Australia using Australian Lithospheric Architecture Magnetotelluric Project (AusLAMP) data. Modelled lower crustal conductivity anomalies resemble concentric geometries revealed in upper crust by potential field and passive seismic These are key part architecture predicted Lachlan Orocline for evolution Tasmanides, which Proterozoic Selwyn Block drives oroclinal rotation against eastern Gondwana margin during Silurian...
The clean energy transition will require a vast increase in metal supply, yet new mineral deposit discoveries are declining, due part to challenges associated with exploring under sedimentary and volcanic cover. Recently, several case studies have demonstrated links between lithospheric electrical conductors imaged using magnetotelluric (MT) data deposits, notably Iron Oxide Copper Gold (IOCG). Adoption of MT methods for exploration is therefore growing but the general applicability...
Research Article| November 01, 2010 Short-wavelength infrared spectroscopy: A new petrological tool in low-grade to very pelites Michael P. Doublier; Doublier 1Geological Survey of Western Australia, P.O. Box 1664, Kalgoorlie, WA 6433, Australia Search for other works by this author on: GSW Google Scholar Tony Roache; Roache 2CSIRO, Earth Science and Resource Engineering, 1130, Bentley, 6102, Sébastien Potel 3Institut Polytechnique LaSalle, BP 30313, F-60026 Beauvais Cedex, France Author...
Abstract The Mount Isa Province in northern Australia is one of the world's most strongly endowed regions for base metals and host to major iron–oxide–copper–gold (IOCG) deposits. Carpentaria conductivity anomaly at eastern margin province a electrical structure Australian continent. We use magnetotelluric data image crustal architecture this highly mineralized region. resistivity models reveal number prominent crustal‐scale conductors, suggesting that likely caused by series isolated or...
The Paleoarchean East Pilbara Terrane contains some of the oldest rocks on Earth, and has a distinctive surface architecture granite domes surrounded by arcuate greenstone belts. Explanations for creation include fold interference, core complex formation subsidence dense, mafic crust between relatively buoyant granitic complexes. In latter "sagduction" process, greenstones are often viewed as descending to base crust. Here we present 3-D inversion Bouguer gravity data density contrast...
The diverse geological and geophysical data sets compiled, interrogated interpreted for the largely undercover southern Thomson Orogen region reveal a Paleozoic terrane dominated by deformed metasedimentary rocks intruded S- I-type granites. An interpretive basement geology map synthesis of geochronological constraints allow definition several stratigraphic packages. oldest most widespread comprises upper Cambrian to Lower Ordovician deposited during vast extensional Larapinta Event with...
The production of rare earth elements is critical for the transition to a low carbon economy. Carbonatites (>50% carbonate minerals) are one most significant sources (REEs), both domestically within Australia, as well globally. Given strategic importance minerals, including REEs, Australian national economy, mineral potential assessment has been undertaken evaluate prospectivity carbonatite-related REE (CREE) mineralisation in Australia. CREE deposits form result lithospheric- deposit-scale...
First posted June 4, 2021 For additional information, contact: Director, Geology, Geophysics, and Geochemistry Science CenterU.S. Geological SurveyMS 973, Box 25046Denver, CO 80225 A challenge for the global economy is to meet growing demand commodities used in today's advanced technologies. Critical minerals are (for example, elements, compounds, minerals) deemed vital economic national security of individual countries that vulnerable supply disruption. The geological agencies Australia,...
Abstract Seismic reflectors in the uppermost mantle, which can indicate past plate tectonic subduction, are exceedingly rare below Archaean cratons, and restricted to Neoarchaean. Here we present reprocessed seismic reflection profiles from northwest Yilgarn Craton Palaeoproterozoic Capricorn Orogen of western Australia that reveal existence a ~4 km thick south-dipping band extends base crust at least 60 depth. We interpret these reflectors, lie south ~50 deep crustal root, as relict suture...
Abstract The Montagne Noire in the southernmost French Massif Central is made of an ENE ‐elongated gneiss dome flanked by Palaeozoic sedimentary rocks. tectonic evolution has generated controversy for more than half a century. As result, multitude models have been proposed that invoke various regimes and exhumation mechanisms. Most these are based on data from itself. Here, new constraints provided combination very low‐grade petrology, K–Ar geochronology, field mapping structural analysis...