Project Y4 Final Report - Parts I & II January 2005 - July 2008 Concepts to targets: a scale integrated mineral systems study of the Eastern Yilgarn Craton

The Tasmanian TASGO 3D model is a model of the geological structure of Tasmania. It contains: interpretations of the TASGO seismic reflection data and reflection and refraction paths from the TASGO seismic refraction survey, plus elevation, bathymetry, satellite imagery, geology maps, geophysical images, major geological structures, gold deposits, geochronology sites, and Dundas area seismic interpretations, cross-sections and fault planes. It is an interactive VRML (Virtual Reality Modelling Language) model. Users can turn data layers on and off and manipulate the model by rotating, zooming and panning. It is a product of the TASGO project, a National Geoscience Agreement (NGA) project between Mineral Resources Tasmania and Geoscience Australia. Software required Geoscience Australia's X3D and older VRML models require the free plugin BS Contact and work best with the web browser Internet Explorer version 6 or higher.

This release comprises the 3D geological model of the Yilgarn-Officer-Musgrave (YOM) region, Western Australia, as Gocad voxets and surfaces. The YOM 3D geological model was built to highlight the broad-scale crustal architecture of the region and extends down to 60 km depth.

Geoscience Australia and State and Territory Geological Surveys have systematically surveyed most of the Australian continent over the past 40 years using airborne gamma-ray spectrometry to map potassium, uranium and thorium elemental concentrations at the Earth's surface. However, the individual surveys that comprise the national gamma-ray spectrometric radioelement database are not all registered to the same datum. This limits the usefulness of the database as it is not possible to easily combine surveys into regional compilations or make accurate comparisons between radiometric signatures in different survey areas. To solve these problems, Geoscience Australia has undertaken an Australia-Wide Airborne Geophysical Survey (AWAGS), funded under Geoscience Australia's Onshore Energy Security Program, to serve as a radioelement baseline for all current and future airborne gamma-ray spectrometric surveys in Australia. The AWAGS survey has been back-calibrated to the International Atomic Energy Agency's (IAEA) radioelement datum. We have used the AWAGS data to level the national radioelement database by estimating survey correction factors that, once applied, minimize both the differences in radioelement estimates between surveys (where these surveys overlap) and the differences between the surveys and the AWAGS traverses. The database is thus effectively levelled to the IAEA datum. The levelled database has been used to produce the first 'Radiometric Map of Australia' - levelled and merged composite potassium (% K), uranium (ppm eU) and thorium (ppm eTh) grids over Australia at 100m resolution. Interpreters can use the map to reliably compare the radiometric signatures observed over different parts of Australia. This enables the assessment of key mineralogical and geochemical properties of bedrock and regolith materials from different geological provinces and regions with contrasting landscape histories. The Radiometric Map of Australia is available as a free PDF or JPG (2nd edition). The gridded digital data which underpins the Radiometric Map of Australia is available free of charge for download using the Geophysical Archive Data Delivery System (GADDS). Because the grids are large (approximately 5.5 GB each), users planning to access entire grids at full resolution should contact <a href=\mailto:minerals@ga.gov.au\">minerals@ga.gov.au</a> to arrange alternative means of acquiring the digital data."

Project Y4 Final Report - Parts III & IV January 2005 - July 2008 Concepts to targets: a scale integrated mineral systems study of the Eastern Yilgarn Craton

3D data for the Geoscience Australia Record 2009/029 - 3D Map and Supporting Geophysical Studies in the North Queensland Region. Data consists of: boreholes; curie depth; dem; depth to basement; gravity; inversions grav mag voxets; magnetics; millungera basin; mt cross section surfaces; projection tm144; radiometrics image; regolith linework; seismic; seismic gravity models; smnd image; solid geology detailed; solid geology simplified; topography. <p>Related product:<a href="https://www.ga.gov.au/products/servlet/controller?event=GEOCAT_DETAILS&amp;catno=69581">3D map and supporting geophysical studies in the North Queensland region</a> - Geoscience Australia Record 2009/029.</p>

3D structural and geological models that provide insight and understanding of the continents subsurface. The models capture 3D stratigraphy and architecture, including the depth to bedrock and the locations of different major rock units, faults and geological structures. <b>Value: </b>These models are valuable for exploration and reconstructions of Australia's evolution <b>Scope: </b>Contains a variety of 3D volumetric models and surfaces that were produced for specific projects at regional to continental scale.

Geographic extent Leonora-Laverton region, within the Yilgarn Craton, Western Australia. Contents This VRML model contains a digital elevation model, surface geophysical images, surface solid geology, solid geology cross sections, fault planes, rock volumes, mineral deposits and geochronology sites. Software required Geoscience Australia's X3D and older VRML models require the free plugin BS Contact and work best with the web browser Internet Explorer version 6 or higher. Size 2.8MB Startup download only 200KB - remaining data downloads when layers are selected.

Geographic extent The Eastern Lachlan Orogen region is located north of the ACT in eastern central NSW near Orange. Contents This VRML model contains DEM surface, basement geology interpretation, gravity image, magnetic image, 3D geology surfaces, fault surfaces, geological cross sections, seismic interpretations and gravity strings of the Eastern Lachlan Orogen region. Software required Geoscience Australia's X3D and older VRML models require the free plugin BS Contact and work best with the web browser Internet Explorer version 6 or higher. Size Approximately 6.5MB. Startup download only 764.5KB - remaining data downloads when layers are selected.

3D Map and Supporting Geophysical Studies in the Gawler Craton and Curnamona Province - 3D Data. Data consists of file names: cross_sections; curie_depth; dem; deposits; depth_to basement_GA; depth_to basement_Seebase; earthquakes; gravity; inversions; magnetics; magnetotellurics; outlines; projection_tm138; radiometrics; seismic; sm_nd_gawler; solid_geology_detailed; solid_geology_simplified; solid_geology_voxet and topography