1954
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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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Collenia is a name for calcareous structures in rocks of Upper Proterozoic (Algonkian) time and of world-wide distribution. It is described as the calcareous secretion of primitive microscopical algae, which themselves are never preserved. A number of similar forms are described under various names, and for brevity, they are all commonly referred to as "Cryptozoon" or "Stromatoliths", or even as "calcareous algae". [Previous studies, and recurrent opinions and interpretations of the subject are summarised and discussed. Conditions for the extensive development and thickness of the reefs are outlined. Recommendations for further study are given.]
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The following report is a brief preliminary outline of the Permian brachiopod faunas of the Fitzroy Basin. The collections have all been made by the Kimberley geological survey party of the Bureau of Mineral Resources from 1948 to 1952. Unfortunately many of the specimens determined or discussed in this report have been destroyed or damaged in the fire at the Bureau offices. The determinations must be regarded as provisional for some forms, as sufficient work has not yet been done, and further collecting is necessary to deal satisfactorily with others, apart from the damage sustained in the fire. As will ensue below many forms are new. It is hoped to describe them systematically from the new collections made in 1953. Some will be passed over to outside specialists. Direct comparison has been made with Carnarvon Basin collections. There is no attempt at description in this report. The collections will be treated under formation names beginning with the lowest. A discussion of ecology is being reserved until later.
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Report on the activities of the administrative and technical sections in the Katherine-Darwin area, to March, 1954. A brief account is given of geological and geophysical operations. The results of prospecting and field work are summarised.
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Report on the activities of the administrative and technical sections in the Katherine-Darwin area, to February, 1954. A brief account is given of geological and geophysical operations. The results of prospecting and field work are summarised.
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Samples from four cores from Cape Range No. 1 Test Well, Shothole Canyon, Exmouth Gulf were submitted for palaeontological examination, by West Australian Petroleum Pty. Ltd. Portion of each core was crushed, washed and examined for microfossils. Foraminifera of Lower Cetaceous age were found in all samples. Radiolaria, ostracoda and Inoceramus prisms were also present. A detailed list of microfossils recognised in each sample is given below.
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In 1944, while Mr. H. B. Owen, geologist of the Bureau of Mineral Resources, was travelling by road from Port Lincoln, South Australia, to Norseman, Western Australia, he collected specimens of the Tertiary rocks for micropalaeontological examination. A detailed report on these samples has never been put on record, but, as the area is now being investigated for the possibility of oil accumulation, the samples have been examined and this report prepared. Some interesting observations made by Mr. Owen during the trip are incorporated here. The most important results of the micropalaeontological examination of these limestones are: 1. The discovery of extensive deposits of upper Eocene age both in outcrop and in subsurface sections; 2. The similarity of the upper Eocene to lower Miocene stratigraphical sequence in the coastal area of the Nullarbor Plains with that found in portion[s] of the Carnarvon Basin, Western Australia, in the Adelaide Basin, South Australia, in north-western Victoria, and in the Torquay area, central southern Victoria.
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Two specimens of lower Cretaceous fossils from Papua New Guinea are described in this record: (i) a Neocomian Holaster of the H. cordatus group from near Mullens Harbour, Papua; and (ii) Lamellibranchia from Wapenamanda, Western Highlands District, Territory of New Guinea.
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These documents have been scanned by the GA Library. Please refer to the document for contents.
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Mr. H. B. Owen forwarded specimens collected by Dr. G. Sleis from "somewhere near the base of the Buldiva Group about 50 or 60 miles north-east from Katherine", Northern Territory for palaeontological examination.