The correlation of seafloor features identified on multibeam bathymetry data with subsurface fluid flow pathways interpreted from seismic data provides insights into the nature of fluid flow mechanisms and seal integrity in the Capel and Faust basins. The magmatism and fluid flow activity have implications for petroleum prospectivity of the Capel and Faust basins. Hydrocarbon accumulations that may have formed within the deeper syn-rift and the pre-rift sections are less likely to have been affected by the Cenozoic magmatic and fluid flow processes and, therefore, may represent lower-risk exploration targets.

Intrusion Related Gold Deposits (IRGD) represents a new class of mineral deposit, although still regarded as controversial (Sillitoe, 1991; Thompson et al., 1999). The consistent association of IRGDs with certain magma types, their consistent polymetallic metal associations (Au, Bi, W, As, Mo, Te and/or Sb; Lang et al., 2000), metal zonation patterns, and the presence of Au in high temperature melt inclusions associated with intrusion proximal examples indicate that a magmatic origin for IRGD can be regarded with confidence (Mustard et al., 2004). The importance of the geochemical inheritance of anomalous Au in felsic magmas (eg. Tomkins and Mavrogenes, 2003) is unclear but is probably not required, and does not explain the consistent associations between IRGD and certain granite types. Gold must be preserved in the melt fraction of crystallizing plutons and be available to the fluid phase during exsolution. Low S magmas of intermediate to felsic compositions with intermediate oxidation states favour neither early sulfide or magnetite precipitation, or early SO2 formation. The absence of these conditions should be conducive to the preservation of Au in the melt fraction of granite magmas (Blevin, 2004). Related information <a href="https://www.ga.gov.au/products/servlet/controller?event=GEOCAT_DETAILS&amp;catno=36591">AGSO Journal vol.17 no. 4 - mineral deposits</a><br /> <br />

This publication is the sucessor to Oil and Gas Resources 2000 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 2001. There is also a chronological listing of offshore and onshore oil and gas discoveries to 2001, 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 2001 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.

This report provides an overview of copper mining production in the Northern Territory between 1885 and 1947. Production, distribution, and economic considerations are generally discussed, and the principle copper producing mines are described in some detail. This description includes details of the geology and working of the lodes, ore grade, and recorded production figures.

The map contains two sheets. Sheet 1 shows resources by regions and Sheet 2 shows uranium deposit types

This report describes the geological and uranium energy implications of the Paterson airborne electromagnetic survey.

In 1999, Australia's economic demonstrated resources (EDR) of bauxite, diamond, gold, iron ore, manganese ore, magnesite, mineral sands (ilmenite, rutile, and zircon), nickel, phosphate rock and tantalum rose, while those of copper, coal (black and brown), lead, lithium, silver, uranium and zinc fell. The reductions in EDR were due mainly to ongoing high levels of production; commodity prices were a subsidiary factor. EDR of all other commodities remained effectively unchanged. EDR of bauxite and manganese ore increased by 16% and over 22% respectively, following reviews of resources information that became available during the year. Increases in EDR of both gem/near gem and industrial diamond resulted from delineation of additional resources in Western Australia. EDR of nickel and tantalum again reached record levels. Gold increased by 14%, surpassing the previous EDR high established in 1996. Australia continues to rank highly as one of the world's leading mineral resource nations. It has the world's largest EDR of lead, mineral sands, nickel, silver, tantalum, uranium and zinc. In addition, its EDR is in the top six worldwide for bauxite, black coal, brown coal, copper, cobalt, copper, gold, iron ore, lithium, manganese ore, rare earth oxides, gem/near gem diamond and vanadium.

A review of the geochemical processes controlling the distribution of thorium in the Earth's crust and Australia's thorium resources can be downloaded from Geoscience Australia's website. The review is one of the outputs from Geoscience Australia's Onshore Energy Security Program (OESP). It will provide an enhanced understanding for government policy and industry investment decisions of the status and distribution of Australia's thorium resources and their potential as an alternative nuclear fuel source for overseas markets.

The map shows Australia's Uranium resources updated upto December 2007

The presence of bauxite in the Territory was first reported in 1908. This supposed bauxite occurrence at Mounts Roe and Bedwell at the head of Port Essington was examined and sampled by the writer in June, 1949 with negative results. Subsequent to the visit to Port Essington, many specimens of lateritic material from the northern portion of the Territory have been received. Some were collected from inland localities and others from various points on the Arnhem Land coast and adjacent islands. These samples were submitted for visual examination and preliminary testing. The results of these tests, together with the interpretations and conclusions that have been drawn with regard to the search for bauxite, are summarised in this report.