This map shows the area of the Eastern South Australia Trawl Closure within the Commonwealth Trawl Sector (also known as the South East Trawl Fishery (SETF)) of the Southern and Eastern Scalefish and Shark Fishery. Developed as per the Southern and Eastern Scalefish and Shark Fishery (Closures) Direction 2008 - Schedule 22. Produced for the Australian Fisheries Management Authority. Not for public sale or distribution by GA.

A weathering intensity index (WII) over the Australian continent has been developed at a 100 m resolution using regression models based on airborne gamma-ray spectrometry imagery and the Shuttle Radar Topography Mission (SRTM) elevation data. Airborne gamma-ray spectrometry measures the concentration of three radioelements - potassium (K), thorium (Th) and uranium (U) at the Earth's surface. The total gamma-ray -ux (dose) is also calculated based on the weighted additions of the three radioelements. Regolith accounts for over 85% of the Australian land area and has a major in-uence in determining the composition of surface materials and in controlling hydrological and geomorphological processes. The application of a stepwise forward multiple regression for the second model generated a weathering intensity index equation of: WII = 6.751 + ? 0.851 - K+ ? 1.319 ? Relief + 2.682 - Th/K + ? 2.590 - Dose. The WII has been developed for erosional landscapes but also has the potential to inform on deposition processes and materials. Interpretation of the WII from regional to local scales and its application in providing more reliable and spatially explicit information on regolith properties are described.

Geoscience Australia`s wall map of Australia is ideal for displays and feature walls in offices, classrooms and conference rooms. The four component sheets - North-East, North-West, South-East and South-West are available individually, flat or folded, with each map 103cm x 88cm. The fully assembled size is 2m x 1.7m. At this scale 1cm on the map represents 25km on the ground. This map can be purchased from Geoscience Australia`s Sales Centre or your nearest topographic map retailer. Digital data at this scale, suitable for use in a GIS, is also available for free download. Product Specifications Coverage: Complete coverage of Australia Currency: Last revised 1998 Coordinates: Geographical Datum: AGD66 (GDA94 compliant at this scale); AHD Projection: Simple Conic on two standard parallels (18S and 36S) Medium: Paper, flat and folded copies Forward Program: Will be revised upon completion of small-scale product data revision

The 'Major crustal boundaries of Australia' map synthesizes more than 30 years of acquisition of deep seismic reflection data across Australia, where major crustal-scale breaks have been interpreted in the seismic reflection profiles, often inferred to be relict sutures between different crustal blocks. The widespread coverage of the seismic profiles now provides the opportunity to construct a map of major crustal boundaries across Australia. Starting with the locations of the crustal breaks identified in the seismic profiles, geological (e.g. outcrop mapping, drill hole, geochronology, isotope) and geophysical (e.g. gravity, aeromagnetic, magnetotelluric) data are used to map the crustal boundaries, in map view, away from the seismic profiles. For some of these boundaries, a high level of confidence can be placed on the location, whereas the location of other boundaries can only be considered to have medium or low confidence. In other areas, especially in regions covered by thick sedimentary successions, the locations of some crustal boundaries are essentially unconstrained. The 'Major crustal boundaries of Australia' map shows the locations of inferred ancient plate boundaries, and will provide constraints on the three dimensional architecture of Australia. It allows a better understanding of how the Australian continent was constructed from the Mesoarchean through to the Phanerozoic, and how this evolution and these boundaries have controlled metallogenesis. It is best viewed as a dynamic dataset, which will have to be further refined and updated as new information such as seismic reflection data becomes available.

Magnetic anomaly map of Australia 1:25 000 000

Geoscience Australia's wall map of Australia is ideal for displays and feature walls in offices, classrooms and conference rooms. The four component sheets - North-East, North-West, South-East and South-West are available individually, with each map 103cm x 88cm. The fully assembled size is 2m x 1.7m. At this scale 1cm on the map represents 25km on the ground. Product Specifications Coverage: Complete coverage of Australia Currency: Last revised 2011 Coordinates: Geographical Datum: AGD66 (GDA94 compliant at this scale); AHD Projection: Simple Conic on two standard parallels (18S and 36S)

Geoscience Australia`s wall map of Australia is ideal for displays and feature walls in offices, classrooms and conference rooms. The four component sheets - North-East, North-West, South-East and South-West are available individually, flat or folded, with each map 103cm x 88cm. The fully assembled size is 2m x 1.7m. At this scale 1 cm on the map represents 25km on the ground. This map can be purchased from Geoscience Australia`s Sales Centre or your nearest topographic map retailer. Digital data at this scale, suitable for use in a GIS, is also available for free download. Product Specifications Coverage: Complete coverage of Australia Currency: Last revised 1998 Coordinates: Geographical Datum: AGD66 (GDA94 compliant at this scale); AHD Projection: Simple Conic on two standard parallels (18S and 36S) Medium: Paper, flat and folded copies Forward Program: Will be revised upon completion of small-scale product data revision

This has been superceded by GeoCat 71670

The Northern Australian Project online GIS, which has been chiefly designed to highlight the results of geochronological research within the project area, was first published in 2003 and updated in July 2004. GIS data reference layers include 1: 250,000, 1: 1 million, and 1: 2,500,000 geological data, regional geophysical images and a topographic map image. The geochronology and fluid inclusion points have been linked live to Geoscience Australia's OZROCKS, OZCHRON and PETROG Oracle databases. Forms display data to the user from these databases using customised query statements. Queries directed to geological layers display information derived from static ArcInfo shapefiles. The North Australia Project geochronology research has chiefly targeted the Arunta Block, Davenport Geosyncline, and the Granites-Tanami Block provinces within the project area.

Layer 09 Base of Precipice Sandstone and equivalents surface Surface produced for the Great Artesian Water Resource Assessment (GABWRA) by Geoscience Australia (http://www.ga.gov.au). This surface was created for 3D visualisation of the Base of Precipice Sandstone and Eq. The surface is available in the following formats 1. GOCAD surface (.ts) 2. ESRI grid 3. ASCII grid (.grd) Use limitations: 1. GOCAD surface requires program capable of reading GOCAD *.ts (triangulated surface) files 2. ASCII grid data requires re-interpolation by end-user resulting in minor differences to accompanying GOCAD *.ts surface. This layer is part of a set comprised of: Layer 01 3-second Digital Elevation Model surface (catalogue #75990) Layer 02 Base of Cenozoic surface (catalogue #75991) Layer 03 Base of Mackunda Formation and equivalents surface (catalogue #76021) Layer 04 Base of Rolling Downs Group surface (catalogue #76022) Layer 05 Base of Hooray Sandstone and equivalents surface (catalogue #76023) Layer 06 Base of Injune Creek Group surface (catalogue #76024) Layer 07 Base of Hutton Sandstone surface (catalogue #76025) Layer 05-07 Base of Algebuckina Sandstone surface (catalogue #76952) Layer 08A Base of Evergreen and Marburg formations (catalogue #76026) Layer 08B Base of Poolowanna Formation (catalogue #76953) Layer 09 Base of Precipice Sandstone and equivalents surface (catalogue #76027) Layer 10 Base of Jurassic-Cretaceous sequence surface (catalogue #76028) This dataset and associated metadata can be obtained from www.ga.gov.au, using catalogue number 76027.