1949
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Geophysical surveys were conducted by the Bureau at Mt. Lyell during the period March-July, 1948. Geophysical surveys were made on the Gormanston and adjacent areas. Methods of survey used comprised Equipotential Line, Self-Potential and Gravity. Concurrently with these operations the results of the 1934-38 geophysical surveys were examined. Field operations were resumed in January, 1949. The principal purpose of this Progress Report is to briefly describe the survey results obtained in 1948 and to state recommendations for testing.
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This palaeontological report describes a collection of fossils from Fitzroy Crossing.
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The possibilities of finding evaporite deposits in Western Australia were investigated by C.L. Knight and E.K. Sturmfels on a reconnaissance trip from 12th September until 14th October, 1949. The localities in which primary gypsum beds or other indications of evaporites at depth were found or from which they are reported, are classified on the following pages according to the geological formations, and their position is shown on two accompanying maps.
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A geological field party was engaged in this area from 9th May to 30th September, 1948. This report provides an account of the field operations undertaken throughout this period and describes personnel involvement.
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Legacy product - no abstract available
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This report describes the findings of a micropalaeontological examination of a small collection of limestones from Cape Range, Rough Range and Learmonth Aerodrome, Northwestern Australia. The collection is characteristic of the Tertiary deposits of the North West Basin. The majority of the limestones belong to the "f" stage (Middle Miocene) of the Netherlands East Indies "letter" classification but the shelly limestone from Rough Range, in the absence of zonal Miocene foraminifera is regarded as Lower Pliocene. A detailed palaeontological description of these samples is given in this report.
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This note describes a sample of beach sand. The specimens of foraminifera found in the sample are listed.
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The area under investigation forms a portion of a coastal sandy belt 1,500 to 2,000 feet wide, which extends from Main Beach (Southport) to South Nobby (North Burleigh), and is about 5 to 15 feet higher than the low-lying coastal plains adjoining it on the west. The known deposits and probably all of the deposits of heavy minerals between Southport and North Burleigh occur either on the present sea beaches or in the eastern half of the sandy belt. Preliminary boring and sampling of the area was carried out early in 1948. Bores were put down to water level using a post hole auger. When the sand brought up from a borehole appeared to contain appreciable quantities of heavy minerals it was sampled by quartering. An account of the investigation is set down in this report. The distribution of heavy minerals and the tonnages available for mining are shown on the accompanying geological plans. Estimates of the quantities of heavy minerals have been tabulated.
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This report describes the results of a micropalaeontological examination of rock samples from the Lesi and Oiapu structures, Papua.
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In March of this year Mr. A.E. Hawker, of Jindare, forwarded to Canberra a small bottle containing water and a yellowish, oily substance which had formed a coating on the inside of the bottle. Microscopic examination of part of the coating proved the presence of globules of oil and also revealed Desmid algae. It seemed probable that the oil had been derived from the decomposition of algae or other recently dead plants. However, as the locality from which the sample was taken lies within a belt of Cambrian limestone, it was possible that the oil had its origin in this rock. While recently engaged in field work in the Northern Territory, Mr. C.J. Sullivan and the writer examined the localities where oil was said to occur. This report comprises an account of the field observations and geological notes made during the examination.