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  • A geological survey of HALLS CREEK, in the East Kimberley of Western Australia, was carried out from 1990 to 1994 as part of the Kimberley-Arunta National Geoscience Mapping Accord (NGMA) Project, undertaken jointly by the Australian Geological Survey Organisation (AGSO), the Geological Survey of Western Australia (GSWA) and the Northern Territory Geological Survey. The NGMA, endorsed by the Australian (now Australian and New Zealand) Minerals and Energy Council in August 1990, is a joint Commonwealth State Territory initiative to produce, using modem technology, a new generation of geological maps, data sets and other information on strategically important regions of Australia over a period of 20 years.

  • Contains selected Abstracts by Geoscience Australia Authors, and packaged documents according to the Symposium streams

  • This report deals with a triangular area of pre-cambrian meta-sediments, totalling about six square miles in which occur copper-uranium orebodies of the Rum Jungle area. The area is situated 55 miles south-south-east of Darwin, Northern Territory. Plane table mapping of [a] portion of the area was carried out by N.J. Mackay and D.J. Gates in 1950 and the area mapped was extended by E.K. Carter in 1951 to cover the whole of the embayment area. The meta-sediments of the area form a large dragfold in the north side of the N 60°E striking Giant's Reef fault, along which there is a horizontal displacement of 3.25 miles. About 5,000 feet of varied meta-sediments are present. The carbonaceous slates are the host rocks for mineralization. Granite and granitized sediments lie to the north, east and south of the area and they occupy the core of a domal structure in the meta-sediments. Three periods or phases of faulting are recognised, the first is the post-granite Giant's Reef faulting, which produced the major dragfold, the copper-uranium mineralization may have been associated with this period of faulting. The second is an axial plane shearing of the dragfold, which is post-mineralization in age. The third system of faults consists of a large number of cross-faults which strike from N 60°W to N 30°E and which have displaced the granite margins, Giant's Reef fault and the axial plane shear. The known copper-uranium mineralization is confined to the axial region of the dragfold and is found almost entirely in carbonaceous slates. The most favourable area for further prospecting appears to be under the deep soil along the axial plane zone, east-north-east of Dyson's Prospect.

  • Legacy product - no abstract available

  • A collection of geological papers, 1969.

  • The principal deposit is situated in Portion 47, Parish of Kempfield, County of Georgiana, four miles west-northwest of Trunkey in a direct line and about seven miles by road, which is mostly fairly rough and hilly. The Sugarloaf deposit is 1.5 miles south of the main workings and other lesser occurrences are known in the area. The main deposits and the Sugarloaf area were examined on April 27th, 1943, in the company of Mr. F. Canavan of this Branch, and Mr. Henry, who works the main quarry on behalf of W.T. Harris. The accompanying plan, Plate 1, is the result of a compass, clinometer and tape survey. Plate 2, is a geological plan of the locality taken from a map prepared by H.G. Raggatt to accompany a report to the New South Wales Mines Department on the Trunkey-Tuena Goldfield.