1954
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These documents have been scanned by the GA Library. Please refer to the document for contents.
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These documents have been scanned by the GA Library. Please refer to the document for contents.
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Legacy product - no abstract available
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These documents have been scanned by the GA Library. Please refer to the document for contents.
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This report deals with the application of geophysical methods (other than radiometric) to the Coronation Hill Radioactive Deposit. Results of radiometric gridding of the surface and costeans, field sludge assays, and radiometric drill hole logging are not treated as these are included in entirety in R.B. Allen's report "The Coronation Hill Uranium Prospect," Bureau of Mineral Resources Record 1954/17. Structural indications from magnetic evidence are discussed. These comprise several faults, or zones of weakness, one of which may coincide with the axis of the surface radio-activity. Several interesting magnetic features for which no cause can be proposed are also noted. The highly uncertain nature of the deductions made is emphasised. The method of approach to geophysical applications at Coronation Hill is detailed, and recommendations are made for possible future work.
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The 1953 field reports refer to several rock units of the Cambrian sequences of the Undilla Basin without defining the units. These units were established in previous years, but all the records and prepared reports were destroyed in the autumn of 1953. The author used this nomenclature in his field reports on the assumption that it would be known to prospective readers. In the present report the definitions are given in a brief and preliminary form. The field maps show the distribution of the rock units, but, as the field reports contain no explanatory sections, these are presented here. The study of the collections included the examination of the lithology and definition and determination of the vertical distribution of fossils. The results of the lithological examination will be given later. The vertical distribution of genera and species of fossils, however, shows the existence of a sequence of biozones (species-zones); it indicates the presence of four fossil stages in the Middle Cambrian sequence and is presented in Chart 2. The fossil list is incomplete, and the nomenclature applied is not final.
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Report on the activities of the administrative and technical sections in the Katherine-Darwin area, to May, 1954. A brief account is given of geophysical operations. The results of prospecting and development work are summarised.
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This report covers the work done by the author who was geophysicist with the Australian National Antarctic Research Expedition at Macquarie Island from April to December, 1953. It is a sequel to Records 1953/30 and 1954/32 and deals with observatory routine and maintenance and other general duties required of the geophysicist. The report contains the results of absolute magnetic observations and initial earthquake phases. Detailed tables of scientific results will be published separately in reports at present in preparation.
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Report on the activities of the administrative and technical sections in the Katherine-Darwin area, to June, 1954. A brief account is given of geological and geophysical operations. The results of prospecting and development work are summarised.
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The Radioactive Section of the Bureau of Mineral Resources expanded its operations in the Katherine-Darwin Area during this quarter. The staff working in the area has been considerably increased, but more geophysicists are required. Regional geological mapping has commenced for the season and has disclosed one prospect showing radioactivity in the Burrundie district. Detailed geological mapping and radiometric gridding is being done at Burrundie, Brock's Creek, A.B.C. and Adelaide River Prospects.