Legacy product - no abstract available

In 1975, to obtain data to assist geological mapping by the Geological Survey of New South Wales and mineral exploration by mining companies, the Bureau of Mineral Resources flew a detailed airborne magnetic and radiometric survey of most of the area of Willyama Complex outcrop in the Broken Hill 1:250 000 Sheet area. This report describes the acquisition, processing, and presentation of the data, and figures the total magnetic intensity and radiometric contours and profiles now available.

Legacy product - no abstract available

No product available. Removed from website 25/01/2019

Legacy product - no abstract available

Legacy product - no abstract available

Legacy product - no abstract available

The North Pilbara project's main objective is to assist industry in their development off exploration strategies. In order to do this, we provide high-quality data sets such as this GIS, which provides different views of the same area, allowing correlation, comparison, and analysis at a broad scale across the entire North Pilbara. The advantage of this GIS is that it packages Geoscience Australia's primary data holdings for the entire region into a convenient digital package that can be manipulated and integrated with proprietary data in standard mapping applications. The North Pilbara GIS provides industry with a decision-making context, or wide-spaced framework. The lack of context is due the fact that industry commonly only have restricted data holdings over their leases. Therefore, regional synthesis data sets provide a context and framework for exploration decisions made on more spatially limited data. The North Pilbara GIS provides many new digital data sets, including a number of variations of the magnetics, gravity, and gamma-ray spectrometry. A solid geology map, and derivative maps, mineral deposits, geological events, and Landsat 5-TM provide additional views. This data set complements the 1:1.5 Million scale colour atlas (announced in June-July issue 58 of AusGeoNews). This provision of a regional digital data set will be an invaluable tool for exploration companies making comparative, correlative, and analytical decisions on the prospectivity of the North Pilbara. Just a few of the new aspects of the GIS include: <ul> <li>the under cover shape of prospective rocks with a new digital solid geology map;</li> <li>all the images generated by the project (magnetics, gravity, Landsat, and radiometrics);</li> <li>the imaging of several large shear zones, and complexity in granites;</li> <li>compilation of geochemistry and geochronology;</li> <li>a new chemical map based on radiometrics;</li> <li>identification of the source regions of transported regolith</li> </ul> This map has been produced as a GeoPDF, which is an extension to the standard PDF file format viewed using Adobe Acrobat Reader. Layers can be turned off and on to customise the view of the data, similar to using Geographic Information System tools. In addition, GeoPDF maps are georeferenced to be compatible with other coordinated geographic data. Coordinate locations and distances can be retrieved automatically. A plug-in to view GeoPDF using Adobe Acrobat Reader is available as a free download ( http://terragotech.com/solutions/map2pdf_reader.php ).

Legacy product - no abstract available

The Australian Geological Survey Organisation (AGSO) flew an airborne geophysical survey of 45 459 line km covering the northern part of the Wangaratta 1:250 000 map Sheet area with an extension west onto the Shepparton 1:250 000 Sheet area. This survey formed part of the National Geoscience Mapping Accord and was jointly funded by AGSO and the Geological Survey of Victoria. The remainder of the Wangaratta 1:250 000 map Sheet area was flown under contract for the Geological Survey of Victoria. The AGSO flown survey, (Wangaratta North) was flown along east-west flight lines 200 metres apart at an altitude of 80 metres above ground level. The survey was flown from March to May 1997. The total magnetic intensity, gamma-ray spectrometric and digital elevation model data collected during the survey, have been processed and are available for purchase. These data are sold as digital point located data, grids and hardcopy maps, by the Australian Geological Survey Organisation. Colour and greyscale pixel image maps are also available.