commodities
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Extended review of mineralexploration in Australia in 2010.
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Energy drives the modern world and underpins our current way of life. The industrial age was fuelled by access to reliable high grade energy sources, such as coal and oil, which drove global economic expansion and modernisation. There is a strong correlation between energy consumption levels and GDP. Australia is a large consumer of energy (5.87 Tonnes of oil equivalent per person annually), ranking twentieth on total consumption, and 16th on a per-capita basis. Australia is well endowed with traditional energy resources, e.g., coal, gas, uranium, and is a large energy producer (8th in the world). Australia also benefits from energy exports. Energy, therefore, strongly contributes to the nation's wealth and living standards, but increasingly it is recognised that these are dependent on access to cheap energy. Environmental concerns and the for the need energy security will drive a switch to other more sustainable energy types, preferably from indigenous energy sources. Although the Australia continent is ideally situated to make use of many alternate energies, e.g., our hot and arid nature makes solar an ideal potential renewable energy source, such sources will not provide all of our needs and will not contribute to peak energy loads. Fortuitously, Australia is endowed with above average concentrations of the radioactive elements (K, U and Th) in many of our rocks. Australia has ~38% of the world's current uranium reserves. The energy generated by the naturally-occurring break down of radioactive elements is immense, and this energy can be captured either by fission of U (and Th?) in nuclear reactors, or by the use of geothermal energy. Combined, both sources have the ability to meet base and peak load power requirements, and the potential to underpin Australia's energy requirements well into the future.
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Critical review of basin-related uranium mineral systems in Australia
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This documentation manual for the national mineral deposits dataset provides the necessary description of AGSO's mineral deposit database (OZMIN) - its structure, the main data and authority tables used by OZMIN, database table definitions, details on the Microsoft Access version of the database and a listing of those deposits in the dataset.
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This publication is the sucessor to Oil and Gas Resources 1999 and continues as the definitive reference on exploration, development and production of Australia's petroleum resources. It covers exploration, reserves, undiscovered resources, development, production and supporting information and statistics. It includes a forecast of Australia's crude oil and condensate production from 2001 to 2015, and sustainability indicators for petroleum resources. Information on Australia's petroleum data availability is also included. A revised estimate of Australia's undiscovered resources is included. The Appendices describe wells drilled and seismic surveys carried out in 1999 and 2000. There is also a chronological listing of offshore and onshore oil and gas discoveries to 2000, listings of all petroleum platforms and pipelines, and a map showing all Australian petroleum exploration and development titles, with a key of title holders and interests as at March 2001. OGRA 2000 provides the background for much of the advice on petroleum resources given to the Australian government and is a key source for petroleum exploration, production and service companies, petroleum engineers and geologists, energy analysts, stockbrokers and share investors.
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Thematic map showing the distribution and age of Australia's diamond deposits and related rock types
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Full-colour map summarises the major Proterozoic mafic-ultramafic magmatic events in the NT and SA. Eighteen events are recognised with three of these (~1810 Ma, ~1130 Ma,~520 Ma or younger) mineralised (Ni, Cu, Co, PGEs). Inset maps show the distribution of Proterozoic and Archaean rocks, mineral occurrences, large igneous provinces, time-space-event chart, and geophysical-elevation imagery. Geological Map (1:4,000,000 Scale)
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Models for the crustal evolution of the Yilgarn Craton have changed in the last 25 years from generally autochthonous greenstone development on sialic crust (Gee et al. 1981, Groves & Batt 1984) to alloch-thonous models that highlight the importance of accretionary tectonics (Myers 1995). Recent models highlight the importance of mantle plumes and long-lived convergent margins for both Au and Ni (Barley et al. 1998). The role of sialic crust in the development of the abundant mineral systems in the Yilgarn, and Archaean cratons in general, however, remains problematic. Felsic rocks from across the Yilgarn Craton are used as crustal probes, with their geochronology, zircon inheritance and Nd isotopic character used to constrain the age and extent of basement terranes. The studies reveal a collage of crustal fragments and implicate both autochthonous and allochthonous crustal development, with increasing importance of accretionary tectonics, particularly after 2.8 Ga. The crustal evolution places significant constraints on the development of metallogenic associations.
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This is a promotional flyer for the Austrlian Mines Atlas that is handed out at conferences and other events. The flyer explains what is available through the Australian Mines Atlas website.
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Magmatic-related uranium resources are globally significant. Nevertheless, this class of uranium mineralisation is poorly represented among Australia's total known resources. This is despite the presence of numerous uranium-rich magmatic events distributed across a large part of the country, and across a vast span of geological time. To assess the potential for magmatic-related uranium mineral systems in Australia, three maps have been produced showing the uranium contents of Australian igneous rocks. Geological datasets incorporating both solid and surface geology, as well as geochemical data, have been compiled from a diverse range of open-file sources. This Record is intended to provide background information relating to these data sources and methodologies used in the production of the maps. The maps illustrate the large spatial extent of uranium-rich igneous rocks in Australia, with occurrences in all jurisdictions where uranium exploration is currently permitted. The maps also permit ready recognition of particularly enriched rocks on a pluton or wider scale. Identification of these areas has application to exploration for magmatic-related uranium systems, as well as certain basin-related uranium systems, where uranium-rich igneous rocks formed part of the metal source. Analysis of the compiled geochemical data reveal that high uranium content is most commonly associated with evidence of extensive fractional crystallisation. Fluorine contents, bulk rock composition, melt temperature, and temporal setting are also important. This preliminary interpretation demonstrates that an applied understanding of well-known igneous processes is able to account for the observed uranium content in uraniferous igneous rocks. Recommendations are given for future avenues of investigation into the prospectivity of Australian igneous rocks for magmatic-related uranium mineral systems, based on an understanding of the geochemical behaviour of uranium in igneous processes.