Uranium exploration expenditure in Australia has increased progressively since 2003 mainly because of the significant increases in spot market uranium prices in recent years. In 2007-08, uranium exploration expenditure increased to a record level of $231.6 million , which is approximately double the 2006-07 expenditure ($111.4 million). The majority of expenditure was in South Australia (51%), followed by the Northern Territory (21%), Queensland (16%) and Western Australia (12%). Uranium exploration expenditure in the 2008 September quarter ($56.7 million) was above the 2007 September quarter ($50 million). However the difference is the expenditure trend from the June quarter to the September quarter, in 2007 expenditure grew by $6.7 million whereas in 2008 expenditure reduced by $6.0 million. This reduction may reflect that the current global economic crisis is affecting the level of uranium exploration spending. Geoscience Australia prepares annual estimates of Australia's uranium resources within categories used for international reporting by the Uranium Group (a joint initiative of the OECD Nuclear Energy Agency and the International Atomic Energy Agency). The estimates are for resources of recoverable uranium after losses due to mining and milling have been deducted. As of December 2008, Australia's Reasonably Assured Resources (RAR) recoverable at costs of <US$80/kg U were estimated to be 1,111,000 t U. This represents an increase of 12% over the estimates for the previous year, mainly due to large increase in both reserves and resource estimates for Olympic Dam deposit (South Australia) and transfer of resources from Inferred in RAR. This means Australia's share of the world's total RAR of uranium recoverable at <US$80/kg U has increased to about 37% . <truncated>

Please note: This product has been superseded by 50m Multibeam Dataset of Australia 2018. - This tile contains all multibeam data held by Geoscience Australia on August 2012 within the specified area. The data has been gridded to 50m resolution. Some deeper data has also been interpolated within the mapped area. The image provided can be viewed on the free software CARIS Easyview, available from the CARIS website: www.caris.com under Free Downloads.

Please note: This product has been superseded by 50m Multibeam Dataset of Australia 2018. - This tile contains all multibeam data held by Geoscience Australia on August 2012 within the specified area. The data has been gridded to 50m resolution. Some deeper data has also been interpolated within the mapped area. The image provided can be viewed on the free software CARIS Easyview, available from the CARIS website: www.caris.com under Free Downloads.

Please note: This product has been superseded by 50m Multibeam Dataset of Australia 2018. - This tile contains all multibeam data held by Geoscience Australia on August 2012 within the specified area. The data has been gridded to 50m resolution. Some deeper data has also been interpolated within the mapped area. The image provided can be viewed on the free software CARIS Easyview, available from the CARIS website: www.caris.com under Free Downloads.

Please note: This product has been superseded by 50m Multibeam Dataset of Australia 2018. - This tile contains all multibeam data held by Geoscience Australia on August 2012 within the specified area. The data has been gridded to 50m resolution. Some deeper data has also been interpolated within the mapped area. The image provided can be viewed on the free software CARIS Easyview, available from the CARIS website: www.caris.com under Free Downloads.

Please note: This product has been superseded by 50m Multibeam Dataset of Australia 2018. - This tile contains all multibeam data held by Geoscience Australia on August 2012 within the specified area. The data has been gridded to 50m resolution. Some deeper data has also been interpolated within the mapped area. The image provided can be viewed on the free software CARIS Easyview, available from the CARIS website: www.caris.com under Free Downloads.

In 1996, Australia's Economic Demonstrated Resources (EDR) of cobalt, gold, nickel, phosphate rock and tantalum increased substantially, while EDR of bauxite, lead, lithium, platinum group metals (PGM), silver and zinc rose slightly. There was a significant reduction in EDR of gem and near gem diamond and industrial diamond due to ongoing high levels of production. Magnesite and tin EDR were also significantly reduced as a result of depletion due to production and reassessment of deposits. EDR of all other commodities remained unchanged or had minor reductions. Australia continues to rank highly as one of the world's leading mineral resource nations. It has the world's largest EDR of bauxite, lead, mineral sands (ilmenite, rutile and zircon), silver, tantalum, uranium and zinc. In addition, its EDR is in the top six worldwide for black coal, brown coal, cobalt, copper, gold, iron ore, lithium, manganese ore, nickel, rare earth oxides, gem and near gem diamond and industrial diamond. Mineral exploration expenditure rose by 7.5% in 1995-96 to $960.2 million from $893.3 million in the previous year. Increases were recorded in all states and the Northern Territory. Gold was again the main target, accounting for 57% of the total expenditure. In 1995-96 mineral resources exports increased to a new record of $34.7 billion (thousand million), a rise of 12.7% over the previous fiscal year. These export earnings comprised 60% of Australia's commodity exports, 45% of merchandise exports and 35% of the country's total exports of goods and services. The Australian Bureau of Agricultural and Resource Economics (ABARE) forecast export earnings to set a further record in 1996-97, rising by nearly 4% to over $36 billion.

This third edition preliminary three dimensional model has been constructed from themes compiled from a variety of sources and assembled primarily within ESRI and GoCAD applications. The display medium for web delivery has used the Virtual Reality Modelling Language (VRML) format. Geophysical modelling was done by Geoscience Australia geophysicists using data stored by GA. Interpreted geology images of the Tanami and Arunta were provided by the Nothern Territory Geological Survey. Cross-sections were geophysically modelled using ModelVision, with geological interpretation provided by the NTGS and imported into GoCAD to build three dimensional fault surfaces. This edition of the model incorporates magnetic and gravity inversion surfaces and a depth to magnetic source layer.

***Removed by request Ollie Raymond 6/03/2019*** <p>Legacy product - no abstract available</p>

In Australia the national network of GNSS Continuously Operating Reference Stations (CORS) provide the fundamental framework for all spatial activities and the linkage to the International Terrestrial Reference Frame (ITRF). Importantly, this national network also contributes data and products to the Global Geodetic Observing System (GGOS) for use in a variety of science applications. The Geocentric Datum of Australia 1994 (GDA94) was based on observations (1992 - 1994) from a sparse network of CORS called the Australian Fiducial Network. The resultant coordinate datum was estimated to have an uncertainty of 3cm horizontally and 5cm vertically at the AFN stations. Since that time the demand for higher accuracies has resulted in GDA94 no longer adequately serving user demand. The ITRF has continued to evolve in accuracy and distribution to the extent that it now allows very accurate measurement of linear and non-linear crustal deformation. Even the Australian Plate, which for GDA94's implementation was considered rigid, is now known to be deforming at levels detectable by modern geodesy. Consequently, national infrastructure development programs, such as AuScope, have been implemented to ensure that crustal deformation can be better measured. The AuScope program also aims to improve the accuracy of the ITRF by contributing to the next generation of the GGOS in our region. This approach will ensure that the ITRF continues to evolve and that Australia's National datum is integrally connected to it with equivalent accuracies. This paper reviews the status of National CORS networks and their contribution to GGOS and its impact on positioning in Australia.