The two versions of the printed Topographic Map Index are: - the 1:100,000 / 1:250,000 Topographic Map Index - the 1:50,000 Topographic Map Index Topographic map indexes are also available as digital data. Maps are listed by name on the back of the index. The 1:50,000 Index also lists availability of Orthophoto Map (OPM) and Topographic Line Map (TLM) for available 1:50,000 maps. Both indexes are available in printed form from your nearest topographic map retailer or from the Geoscience Australia Sales Centre. You can also download PDFs of each index. Note: To print these PDFs at 100% requires an A0 printer. They are best for viewing on-screen. For new maps which may have been released after these indexes were published, please refer to the new releases page or use the Product Search tool. Product Specifications Coverage: Australia Currency: 2004 (PDF); 2004 (data) Coordinates: Geographical Datum: GDA94 Format: ArcInfo Export, ArcView Shapefile and MapInfo mid/mif; PDF (maps only); Paper Map (maps only) Medium: GIS Data Free online, free folded map or CD-ROM (fee applies) Forward Program: Updated annually

The Compact Reference Map is the ideal product for discovering more about Australia from one convenient source. It includes a colourful array of information about Australia`s people, flag, language, national anthem, birds and animals, parliamentary system and more. All information is in German.

The Compact Reference Map is the ideal product for discovering more about Australia from one convenient source. It includes a colourful array of information about Australia`s people, flag, language, national anthem, birds and animals, parliamentary system and more. All information is in Simplified Chinese.

The Compact Reference Map is the ideal product for discovering more about Australia from one convenient source. It includes a colourful array of information about Australia`s people, flag, language, national anthem, birds and animals, parliamentary system and more. All shown in Indonesian

The eighth edition of the Airborne Geophysical Survey Index presents a summary of the essential specifications of over 900 surveys held in the National Airborne Geophysical Database. Include Index Maps at 1:10 million scale for magnetic, radiometric and gravity survey coverage of Australia as at 1 May 2004.

This second edition, coming after the first one published in 1990, has been entirely revised in order to show a clear distinction between sedimentary, volcanic extrusive, and endogenous dated formations. The geology of the oceans has been also updated according to the most recent magnetic and satellite-gravimetric data. Positions of the main volcanoes and meteoritic craters were added to the map. The new cartographic conception of the map allows a rapid visual reconstruction of the main plates and sub-plates of the global tectonics. This geological wall map is the only one existing today that presents the world geological setting at a glance. There is a clearly distinguishable contrast between the continents - whose rocks may attain an age up to nearly 4 billion years&endash; and the oceanic crust - whose age does not exceed 200 million years.

These data represent whole rock geochemical analyses from the OZCHEM Database. Each analysis includes a geographic location and a geological description, which includes the host stratigraphic unit, where known, and the lithology. Most samples have been collected by Geoscience Australia field parties. These data are a snapshot at the "Ending Date" of the current database entries and are also a subset of the full database managed by GA which includes data from Papua NewGuinea, Antarctica, Solomon Islands and New Zealand.

Current understanding of Australia's geothermal resources is based on limited data such as temperature measurements taken in petroleum and mineral boreholes across the country. Heat flow studies are rarer, with existing publicly available compilations containing less than 150 heat flow data-points for Australia. Both temperature and heat flow data are unevenly distributed and, where no data exist, the available information has been interpolated over large areas to generate national-scale maps. Geoscience Australia has acquired the field and laboratory equipment required to measure heat flow. It began thermal logging of boreholes across Australia in late 2008 and has since collected 155 temperature logs. In late 2009, the thermal conductivity meter became operational, allowing the project to begin thermal conductivity measurements of samples collected from logged boreholes. To help clear some of the backlog of samples collected during 2008-09, the measurement of some of these samples has been contracted out. This record details the first set of new heat flow interpretations to be released by Geoscience Australia. The remaining temperature logs will be interpreted for heat flow and released, as thermal conductivity data for these holes become available.

Legacy product - no abstract available

The world's first satellite-derived mineral maps of a continent, namely Australia, are now publicly available as digital, web-accessible products. The value of this spatially comprehensive mineral information is readily being captured by explorers at terrane to prospect scales. However, potentially even greater benefits can ensue for environmental applications, especially for the Earth's extensive drylands which generate nearly 50% of the world's agricultural production but are most at risk to climate change and poor land management. Here we show how these satellite mineral maps can be used to: characterise soil types; define the extent of deserts; fingerprint sources of dust; measure the REDOX of iron minerals as a potential marine input; and monitor the process of desertification. We propose a 'Mineral Desertification Index' that can be applied to all Earth's drylands where the agriculturally productive clay mineral component is being lost by erosion. Mineral information is fundamental to understanding geology and is important for resource applications1. Minerals are also a fundamental component of soils2 as well as dust eroded from the land surface, which can potentially impact on human health3, the marine environment4 and climate5. Importantly, minerals are well exposed in the world's 'drylands', which account for nearly 50% of Earth's land area6. Here, vegetation cover is sparse to non-existent as a result of low rainfall (P) and high evaporation (E) rates (P/E<0.65). However, drylands support 50% of the world's livestock production and almost half of all cultivated systems6. In Australia, drylands cover 85% of the continent and account for 50% of its beef, 80% of its sheep and 93% of its grain production7. Like other parts of the world, Australia is facing serious desertification of its drylands6. Wind, overgrazing and overstocking are major factors in the desertification process8. That is, the agriculturally productive clay-size fraction of soils (often includes organic carbon) is lost largely through wind erosion, which is acerbated by the loss of any vegetative groundcover (typically dry plant materials). Once clay (and carbon) loss begins, then the related break down of the soil structure and loss of its water holding capacity increases the rate of the degeneration process with the final end products being either exposed rock or quartz sands that often concentrate in deserts.