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  • This project is based on the recognition that combinations of specific granite types and distinctive host rocks tend to be associated with certain types of Au, Cu, Zn, Pb, Sn and W mineralisation. Rarely is Proterozoic mineralisation hosted by granites themselves, for the most part being hosted in the country rock, often three or more kilometres from the nearest known granite. There is an apparent host rock control on the deposition of metals: this can be both compositional and also controlled by the competency of the host lithologies. This compositional host rock control has been documented by Stuart-Smith et al. (1993 - Geology and mineral deposits of the Cullen Mineral field, AGSO Bull. 229) for the Pine Creek Inlier and noted in the eastern Mount Isa Inlier by Wyborn and Heinrich (1993 - The relationship between late-tectonic felsic intrusives and Cu-Au mineralisation in the Eastern Fold Belt, Mount Isa Inlier, Trans Royal Soc Edinburgh, Earth Sci, 83, 201-209). This project collated data on the Proterozoic granites and their comagmatic volcanics, the mineralogical composition of the rocks that they intrude and briefly assessed the style and type of mineralisation present within 5 kms of an outcrop of granite. All data collated in the reports is built into the accompanying GIS, and essentially each item listed in the report is converted into a searchable item within the GIS. This project has aimed to provide the data and interpretations to show the following: 1) Which Proterozoic granites have metallogenic potential, 2) What commodities they are likely to be associated with, and 3) Where the better host rocks are located that are likely to host potential mineralisation. <p>Related material<a href="https://www.ga.gov.au/products/servlet/controller?event=GEOCAT_DETAILS&amp;catno=33388">The metallogenic potential of Australian Proterozoic granites. GA Record 2001/012.</a></p>

  • Product no longer exists, please refer to GeoCat #30413 for the data

  • Product no longer exists, please refer to GeoCat #30413 for the data

  • Londonderry - Drysdale TMI (rtp) with northeast illumination

  • In October 2001, maintenance work on the GPS and ancillary equipment at Australia's Antarctic base at Casey was carried out. This site forms part of the Australian Regional GPS Network (ARGN). In addition accurate measurements were taken of the relationship between the ARGN monument and the three reference marks to check for any possible local movement since the site was established in December 1993. These measurements also provide a reliable base measurement for future monitoring. A GPS connection and difference in height by optical levelling between the ARGN monument and the tide gauge benchmark was also completed. This report documents the methods and results of these surveys.

  • S-type granites of Proterozoic age are rare in Australia, representing only 2.9% of mapped outcrop area.

  • The extended abstract describes geophysical map units and large geophysical domains determined for the Yilgarn Craton.

  • This grid represents gravity anomalies of the Australian region. The grid combines accurate onshore gravity measurements, a sub-sample of the levelled offshore marine gravity traverses with satellite data used in areas where there is no marine data. The cell values represent simple Bouguer anomalies at a density of 2.67 tm-3 onshore and free-air anomalies offshore. The grid cell size is 0.5 minutes of arc, which is equivalent to about 800 metres. The smallest wavelength contained in the grid is 1600 m.