Archaean domes are associated with many of the larger gold deposits of the Eastern Goldfields Superterrane (e.g., Sunrise Dam, Wallaby, St Ives camp, Kalgoorlie, Lawlers etc), and the Scotia-Kanowna Dome is eroded to sufficiently deep levels to provide insights into the role domes play in controlling gold deposition. At the centre of the Scotia-Kanowna Dome is a granite-cored batholith, which is surrounded by outward-dipping greenstone belts and associated shear zones. A number of small- to medium-sized gold deposits occur on the limbs and the centre of the dome, and the world-class Kanowna Belle gold mine occurs on the nose of the dome. At least three separate gold mineralising events are defined, each of regional significance that can be correlated with other well known gold deposits of the Eastern Goldfields Superterrane. The architecture of granite-cored domes has played a critical role in focussing magma as well as mineralising fluids into regions of maximum dilation. They do this by nature of their inherent competence, by influencing the position and geometry of shear zones (fluid pathways) and hence distribution of stratigraphy (depositional sites) across the region. The Scotia-Kanowna Dome is a good example to study this control, and inferences can be made for similar controls by concealed domes, such as beneath Kalgoorlie.

New geological and geophysical data in the North Queensland region provides new insights into the geology and geodynamics of the region. One major finding from studies in North Queensland is the recognition of the eastern boundary of the Mount Isa province as a west-dipping structure within the crust. This separates the Mount Isa Province (in the west) from the Numil and Kowanyama Seismic Provinces (in the east). IOCG deposits in the North Queensland region are situated west, in the hangingwall, of the boundary with the boundary at some depth beneath them. This is an analogous location to the Olympic Dam deposit in South Australia. Potential field data allow tracking of the boundary to the north and to the south, providing insights into IOCG exploration potential in North Queensland. Advanced inversion techniques, such as mineral estimation from potential field inversion results, also allow targetting of these IOCG deposits to the south and to the north of known deposits.

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.

The Sedimentary basins of eastern Australia project undertook structural and sequence stratigraphic mapping of a regional grid of seismic reflection data in the Bowen, Gunnedah and Surat Basins (usually 4 seconds two-way travel time data, with about 15,000 line km of data on about 1200 individual seismic lines). The seismic mapping was used to define the interplate and intraplate tectonic events that have helped to create the accommodation space and also to define the stratal geometry of the sedimentary units. Thus, the mapping provided the overall geometry of the basin system as well as the geometry of several of the sequence boundaries, resulting in the development of a new sequence stratigraphic framework for the basins. These results were also compiled into a series of structure contour and isopach maps, which have been used to build a 3D geological map of the Bowen Gunnedah and Surat Basins.

Advances in computer technology have provided the opportunity to present geoscience information in new and innovative ways. The use of web-based three-dimensional interactive models, animations and fly-throughs significantly enhances our ability to communicate complex geometries and concepts not only to the geoscientific community but also, just as importantly, to the general public. Projects within Geoscience Australia currently use a range of GIS, remote sensing, and modelling packages for visualisation of fundamental and derived data. In the main each of these packages also has the ability to produce, as an output, some form of model or animation sequence displaying the results of the visualisation. In most cases however, these outputs are generally not of sufficient quality or do not provide adequate functionality without further processing or editing. Geoscience Australia has adopted a multi-disciplinary approach to 3D visualisation encompassing cartography, GIS, remote sensing, graphic design, programming, web, and video editing to the post-processing of these visualisations. This paper examines the benefits of using models and movies for the visualisation of geoscience and briefly discusses the current workflows and presentation techniques used by the Geo-Visualisation team within Geoscience Australia.

Seismic line 07GA-IG2, described here, forms part of the Isa-Georgetown-Charters Towers seismic survey that was acquired in 2007. The seismic line is oriented approximately east-west and extends from east of Croydon in the west to near Mt Surprise in the east (Figure 1). The acquisition costs for this line were provided jointly by the Geological Survey of Queensland and Geoscience Australia, and field logistics and processing were carried out by the Seismic Acquisition and Processing team from Geoscience Australia. Three discrete geological provinces have been interpreted on this seismic section (Figure 2). Two of these, the Numil and Abingdon Provinces, only occur in the subsurface. The upper crustal part of the seismic section consists of the Paleo- to Mesoproterozoic Etheridge Province, which here includes the Croydon Volcanic Group in the western part of the Province. In this east-west profile, the crust is essentially two-layered, with a strongly reflective lower crust defining the Numil and Abingdon Provinces and a less reflective upper crust being representative of the Etheridge Province.

A technical user manual for volcanic ash dispersion modelling using python-FALL3D.

The Radiometric 3D Atlas is a series of interactive X3D Models that can be viewed in your web browser. The Atlas consists of an overall model of Australia and eight detailed regional models from each state and territory. Each model includes; images from the Radiometric, Magnetic Anomaly and Gravity Anomaly data sets; a digital elevation model; coastline, cities/towns, state borders, mines; and 1:250 000 topographic map index. 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. More information about the plugin is available from the <a href=http://www.ga.gov.au/resources/multimedia/about-3dmodels.jsp>About 3D Modelling and Required Software</a> page. Size Approximately 163 MB for all the models. Startup download is 8.52 MB - the remaining datasets download when selected.

This AusGeo New article provides an overview of the geological and petroleum prospectivity assessment of the Capel and Faust basins, northern Lord Howe Rise, that was completed during 2006-2010 by the Remote Eastern Frontiers project at Geoscience Australia. The regional setting, data acquisition, assessment methodology and the findings of the study are outlined.

As part of Geoscience Australia's Onshore Energy Security Program the authors have investigated whether there is any evidence that a sandstone hosted uranium system has operated in the Eromanga Basin and assessed the basin's potential to host significant uranium mineralisation.