Proterozoic Lead-Zinc Mineralising events on Australian Lead-Zinc Resources base, 1:5 000 000 (Map 1) December 2007 version

Soils are one of the key factors which limit human settlement in Australia. Few Australian soils are of good quality - most are naturally infertile. This map shows the extent of soil limitations across the country. In order to overcome problems associated with the many classifications in existence, this map classes soils according to limitations of use - in particular chemical and physical limitations. Altogether, four primary groupings are shown and these are further divided into a total of 29 mapping units. A detailed table relates these units to traditionally classified soil profiles and landforms. Product Specifications: Coverage: Australia Currency: 1976-77 Coordinates: Geographical Datum: AGD66 (GDA94 compliant at this scale) Projection: Simple Conic on two standard parallels 18S and 36S Medium: Paper, flat and folded copies

The Regolith Map of Australia 1:5M scale dataset (2013 edition) is a seamless but partial national coverage of regolith-landform units, compiled for use at, or between 1:5 million, and 1:1 million scale. The data maps high-level regolith-landform units. The units appear as polygon geometries, and with attribute information identifying high-level regolith and landform nomenclatures and their hierarchy. The 2013 dataset is a completely new portrayal of Australia's regolith from that presented much earlier in 1986, in which a whole of continent view of Australia's regolith was based on a simpler desktop-based 1:5 million continental regolith terrain assessment, not directly linked with landforms and published by the Bureau of Mineral Resources Geology and Geophysics. The 2013 edition incorporates new published mapping in South Australia (2012), integrated with earlier field-based regolith-landform mapping data from the Northern Territory (2006) and later Queensland (2008). The attribute structure of the new dataset is also revised to be more compatible with the GeoSciML data standard, published by the IUGS Commission for Geoscience Information. The map data is compiled largely from simplifying and edge-matching of 1:250 000 scale regolith compilation maps. Some source regolith and geologic maps ranging in scale from 1:50 000 to 1:1 million were used together with LANDSAT7, radiometric, magnetics, and gravity imagery, in addition to a 9 second digital elevation model.

A seamless Regolith Map of Australia drawn from field-defined regolith-landform data at approx 1:250k scale for QLD and NT, and additionally from SA regolith data derived from the South Australian Regolith Map (1:2 Million) published in 2012, and generalised by Geoscience Australia to 1:5 000 000 for matching with existing data.

In 2005 Geoscience Australia and the National Oceans Office undertook a joint project to produce a consistent, high-quality 9 arc second (0.0025° or ~250m at the equator) bathymetric grid for Australian waters. In 2009 a number of new datasets were included in an updated version of the grid. The 2009 bathymetric grid of Australia has been produced to include recently acquired datasets, and solutions to issues identified in the previous version. The revised grid has the same extents as its 2005 counterpart, including the Australian water column jurisdiction lying between 92° E and 172° E, and 8° S and 60° S. The waters adjacent to the continent of Australia and Tasmania are included, as are areas surrounding Macquarie Island, and the Australian Territories of Norfolk Island, Christmas Island, and Cocos (Keeling) Islands. The area selected does not include Australia's marine jurisdiction offshore from the Territory of Heard and McDonald Islands and the Australian Antarctic Territory. This report details the datasets and procedures used to produce the 2009 bathymetric grid of Australia. As per the 2005 grid, the 0.0025 decimal degree (dd) resolution is only supported where direct bathymetric observations are sufficiently dense (e.g. where swath bathymetry data or digitised chart data exist) (Webster and Petkovic, 2005). In areas where no sounding data are available (in waters off the Australian shelf), the grid is based on the 2 arc minute ETOPO (Smith and Sandwell, 1997) and 1 arc minute ETOPO (Amante and Eakins, 2008) satellite derived bathymetry. The topographic data (on shore data) is based on the revised Australian 0.0025dd topography grid (Geoscience Australia, 2008), the 0.0025dd NZ topography grid (Geographx, 2008) and the 90m SRTM DEM (Jarvis et al, 2008). The final dataset has been provided in ESRI grid and ER Mapper (ers) formats. An associated shapefile has been produced so that the user can identify the input datasets that were used in the final grid. IMPORTANT INFORMATION This grid is not suitable for use as an aid to navigation, or to replace any products produced by the Australian Hydrographic Service. Geoscience Australia produces the 0.0025dd bathymetric grid of Australia specifically to provide regional and local broad scale context for scientific and industry projects, and public education. The 0.0025dd grid size is, in many regions of this grid, far in excess of the optimal grid size for some of the input data used. On parts of the continental shelf it may be possible to produce grids at higher resolution, especially where LADS or multibeam surveys exist. However these surveys typically only cover small areas and hence do not warrant the production a regional scale grid at less than 0.0025dd. There are a number of bathymetric datasets that have not been included in this grid for various reasons. Comments or queries about the data included in the grid (or excluded) can be directed to: IDEASRequests@ga.gov.au. This grid is not suitable for use as an aid to navigation, or to replace any products produced by the Australian Hydrographic Service.

Shows Australia and it's external Territories including Christmas Island, Cocos (Keeling) Islands, Heard Island, Antarctica, Norfolk Island, Lord Howe Island and Macquarie Island at various scales.

Proterozoic Copper Mineralising events on Australian Proterozoic Georegions base, 1:5 000 000 (Map 2) December 2007 Version

Map showing distribution of a selected range of mineral deposits, operating mines and historic mines for selected commodities.

The file magmap_V5_2010 is a composite TMI grid of the Australian region with a grid cell spacing of ~3 seconds of arc (approximately 80 m). This grid only includes airborne-derived TMI data for onshore and near-offshore continental areas. Data used to compile this grid form the basis for the concurrent release of a new fifth edition of the Magnetic Anomaly Map of Australia. This edition is underpinned by the concept of a database of matched TMI grids, from which any map at any resolution can be extracted. Details of the specifications of individual airborne surveys can be found in the Eleventh Edition of the Index of Airborne Geophysical Surveys (Percival, 2010), which is included with the grid as a PDF document called magmap_V5_2010.pdf. This Index is also available online at http://www.ga.gov.au/minerals/research/methodology/geophysics/acquisition.jsp#reports. Further up to date information about individual surveys can also be obtained online from the Airborne Surveys Database at http://www.ga.gov.au/oracle/argus/. The grid results from a completely new compilation of TMI grid data, an updated method of matching the individual survey grids, and use of independent data to constrain long wavelengths. 795 individual grids have been matched and merged into the composite grids supplied here. The resolution of each grid is optimal for the specifications of the source survey line data (Briggs, 1974). Since the fourth edition was released in 2004 data from many new surveys have been added to the database, acquired mainly by the State and Territory Geological Surveys. It is estimated that 27 000 000 line-kilometres of survey data were acquired to produce the grid data, 8 000 000 line-kilometres more than for the previous edition. The index map (Figure 1) shows the distribution of original survey line spacings from which the grids are derived, Figure 2 shows the distribution of all survey line spacings, and Figure 3 shows the survey ownerships. Matching of the grids in the database was achieved using a program called Gridmerge, which was originally developed within Geoscience Australia and has now been commercialised. It uses statistics of the overlap regions between adjacent surveys to globally minimise the differences in the base levels of all surveys (Minty et al., 2003). There is also provision to remove higher-order surfaces from grids. To constrain long wavelengths, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of those survey grids which overlapped the AWAGS data (Milligan et al., 2009). The high-frequency differences between the grids were smoothed using a convolution operator. Very long wavelengths greater than 1000 km have been constrained by using the MF6 data derived from the CHAMP satellite (Maus et al., 2007). Grid downloads: The Magnetic Map of Australia grid can be downloaded using the Geophysical Archive Data Delivery System (GADDS) on the Australian Government's Geoscience Portal at http://www.geoscience.gov.au/bin/mapserv36?map=/public/http/www/geoportal/gadds/gadds.map File size: At full resolution, the Magnetic Map of Australia grid has 41876 rows and 50592 columns and has a file size of approximately 8.3 Gb in ERMapper format. Note that, because of GADDS file size limits, it is not possible for clients to download very large areas of the grid at full resolution. Clients wishing to do so should contact Geoscience Australia to make special arrangements to have the complete grid dataset provided on a user-supplied portable hard drive.

Gravity anomaly map of the Australian Region 3rd edition. This map is derived from an image which combined onshore Bouguer gravity anomaly and offshore freeair anomaly values. Onshore Bouguer gravity anomalies were calculated from over 1.4 million observations held in the the Australian National Gravity Database. Offshore freeair anomaly data were derived from satellite altimetry data available from Scripps Institution of Oceanography. This data is used to study the tectonic structure of Australia by mapping variations in the earth's gravimetric field. The 'hotter colours' (eg red) show areas of stronger gravity field and the 'cooler colours' (eg dark blue) show areas of weaker gravity field. Gravity data used to produce the Gravity Anomaly Map of the Australian Region are available for free download via the Geophysical Archive Data Delivery System (GADDS).