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An integrated package comprising geological, structural, geophysical, geochronological and geochemical data. The GIS encompasses the outcropping and covered portions of Palaeoproterozoic and Mesoproterozoic rocks straddling the NSW-SA border (the Broken Hill, Euriowie, Olary, Mount Painter and Mount Babbage Inliers). The GIS features recent data collected by the Broken Hill Exploration Initiative.

These data are a digital representation of information depicted on the printed maps of Seigal, Hedleys Creek, Carrara Range Region, Lawn Hill Region, Riversleigh, Constance Range Region, Mount Oxide Region, Mammoth Mines Region, Myally, Alsace, Coolullah, Kennedy Gap, Prospector, Quamby, Mount Isa, Mary Kathleen, Marraba, Cloncurry, Oban, Duchess Region, Malbon, Kuridala Region, Selwyn Region, Dajarra and Ardmore 1:100 000 Geological Series and Mount Drummond 1:250 000 Geological Series produced by AGSO, the Geological Survey of Queensland (GSQ) and Northern Territory Geological Survey (NTGS). Data present include geological polygons (litho-stratigraphic units), linear structural features (faults, dykes, folds, trends, lineaments etc), and point features (mines, structural points etc). Polygons have a range of attributes extracted from each individual map including unit name, era, period and lithological description, while lines and points are feature coded according to the AGSO publication 'Symbols Used On Geological Maps' (BMR 1989). A standard look-up table of AGSO geological codes and associated descriptions is available (see ADDITIONAL METADATA). The data has gradually evolved from elementary CAD quality data into its present topologically structured GIS format, and hence has many imperfections and inconsistencies. Data has undergone rigorous validation and testing that includes over 80 different tests.

Geoscience Australia has released two web-based map sheets (GeoCat 69347) that show the continental extent and age relationships of Archean mafic and ultramafic rocks and associated mineral deposits throughout Australia. Geoscience Australia Record 2009/41 is a user guide which compiles all the geological and geochronological data that underpins the information portrayed on these two new map sheets. The Archean eon (~4000 million years to 2500 million years) represents an early part of Earth's history that is noteworthy for the occurrence of unusual olivine-rich ultramafic rocks called komatiites which contain world-class deposits of nickel sulphides. Archean mafic and ultramafic igneous rocks with reliable crystallisation ages in Australia are confined to the older crustal components in Western Australia and South Australia. In this study, twenty-six Archean Magmatic Events (AME) ranging in age from the Eoarchean ~3730 Ma (AME 1) to the late Neoarchean ~2520 Ma (AME 26) were identified. This mafic-ultramafic magmatic event series is based on several hundred published age measurements, of which over 95 per cent are derived from recent Uranium-Lead dating of zircon and baddeleyite. The new map sheets, when used in association with the `Australian Proterozoic Mafic-Ultramafic Magmatic Events' map published in 2008 (GeoCat 66114; GA Record 2008/15: GeoCat 66624), summarise the temporal and spatial evolution of Precambrian mafic-ultramafic magmatism in Australia. These maps provide a national framework for investigating under-explored and potentially mineralised environments, and assessing the role of mafic-ultramafic magmatism in the development of the Australian continent. The maps will be of interest to explorers searching for nickel, platinum-group elements, chromium, titanium, vanadium, and cobalt.

The Surface Geology of Australia data package on DVD includes the: <ul><li><a href="https://www.ga.gov.au/products/servlet/controller?event=GEOCAT_DETAILS&catno=70311">Surface Geology of Australia 1:1 million scale dataset 2010 edition</a> </li> <li><a href="https://www.ga.gov.au/products/servlet/controller?event=GEOCAT_DETAILS&catno=70622">Surface Geology of Australia 1:2.5 million scale dataset 2010 edition</a></li> <li> <a href="https://www.ga.gov.au/products/servlet/controller?event=GEOCAT_DETAILS&catno=32366">Geological Regions of Australia (National Geoscience Dataset)</a></li></ul> DVD package of three national geological datasets.

Mount Marumba covers the central part of Arnhem Land, which is occupied mainly by the Katherine River, Mount Rigg and Roper Groups of the Palaeoproterozoic to Mesoproterozoic McArthur Basin succession. These units consist of marine and non-marine clastics, carbonates, and lesser volcanics, that are extensively intruded by dolerite and some microgranite. Recent mapping and associated structural, geophysical, geochemical and geochronological studies have resulted in a number of important new findings: (1) The Jimbu Microgranite intruded the Katherine River Group at ~1710 Ma, causing updoming of surrounding sediments to form a number of structural domes. (2) An age of 1324 Ma has been obtained from the Derim Derim Dolerite, intruding the Roper Group, that provides improved constraints on the ages of sedimentation and deformation. (3) An aeolian facies has been recognised within the Gundy Sandstone. (4) The former Kombolgie Formation has been elevated to a Subgroup, subdivded into component formations, and extended upwards to include the McKay Sandstone. (5) A major impact structure, the Gulpuliyul Structure, was formed between ~1600 and 1324 Ma.The mapping and interpretation took advantage of the full complement of regional gravity, airborne magnetic and gamma-ray spectometric datasets now available. Concealed dykes, lineaments and sill edges are overprinted on the surface geology in magenta. In addition, the map features 1:1 000 000-scale marginal figures of an enhanced total magnetic intensity image and a gamma-ray spectroscopy image. Two cross-sections highlight the salient features of the stratigraphy and structure. The 84-page Explanatory Notes presents descriptions of the geology in some detail, in sections on the regional geological setting, stratigraphy, geophysics, structure, geological history and economic geology. The text is supported by several tables and numerous black-and-white photographs and line drawings, as well as some full-colour images.

The national mineral deposits dataset covers 60 commodities and more than 1050 of Australia's most significant mineral deposits - current and historic mines and undeveloped deposits. This release adds more than 100 new deposits to the previous release of OZMIN plus upgraded resource and production figures.

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