No abstract available

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

Total magnetic intensity stitch of all open file airborne geophysical surveys at 250 m cellsize for Western Australia. To be released at ASEG, Perth, March 2000.

Papua New Guinea Geographic map 1:2 500 000

No abstract available

This has been superceded by GeoCat 71670

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.

The Geology of Australia data set documents the distribution and age of major stratigraphic, intrusive and medium to high-grade metamorphic rock units of onshore Australia. It is an ongoing compilation, subject to periodic revision as additional data becomes available. The data set was compiled to use at scales between 1:2,500,000 and 1:5,000,000 inclusive.

This dataset is derived from the 1:2,500,000 scale geology of Australia (1976).The surficial cover theme was derived from stipple patterns on the original published maps, overprinting the bedrock geology polygons. It has polygon topology with attribution giving a description and a numerical code for each map unit. Map units represent 5 superficial Cainozoic units and exposed bedrock. The data was originally captured by AGSO and passed to NRIC (now ARDC) for translating, cleaning and final editing. ARDC acknowledges the following organisations for their contributions to the preparation of this dataset: Australian Geological Survey Organisation (AGSO) Australian National Parks and Wildlife Service (project initiation and financial support) This digital dataset was released in 1999 by ARDC, BRS.

Pixel map image of the Pilbara area. Composite colour image of K (red), U (blue) and Th (green). Each band histogram equalised. 25% of total count added as a gradient to enhance the visibility of small scale structures.