1952
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The distribution of marine Tertiary rocks in Australia is restricted to the western and southern coastal areas of the continent. The rocks represented are of Paleocene, Eocene, Miocene and Pliocene ages. Considerable material has been collected in stratigraphic sequence from many Tertiary localities in recent years and the detailed examination of the foraminiferal content of the rocks has yielded many startling discoveries.
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The area covered by this investigation, totalling approximately 100 square miles, surrounds an occurrence of radio-active minerals which was discovered in 1950. The deposit is 30 feet east of the Stuart Highway, 21 miles south-east of Pine Creek, Northern Territory, and 40 miles north-west of Katherine. It is one third of a mile north-east of the Fergusson railways siding. Mapping of the area was undertaken consequent upon an examination of the Fergusson River Crossing Deposit by H.J. Ward in September 1950 and by Ward and R.S. Matheson in November 1950. Although the prospect itself was not considered to warrant further work, it was thought that further occurrences might exist in the area, particularly along the shear which had localized the known deposit. Mapping and prospecting of the area was therefore recommended. This report records the results of that investigation.
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In December, 1950, the Pakistan Government filed a formal application to Australia, through the Technical Assistance to South-East Asia Co-operation Scheme, for three geologists to carry out geophysical surveys in Pakistan. In May 1951, the geologists, J.F. Ivanac and D.M. Traves of the Bureau of Mineral Resources and D. King of the South Australian Mines Department, arrived in Pakistan. Their instructions were to carry out a geological survey of a portion of the Gilgit Agency, and to discuss with the Director of the Pakistan Geological Survey or any other Government Officer familiar with the problem, the alluvial gold deposits of Chitral River and the lignite deposits of West Bengal and Sind. Field investigations commenced from Gilgit in June 1951, and the party spent four months in the region. This report gives an account of the visit and the results of the investigation.
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Three geologists left Australia in 1951 to conduct geological surveys in Pakistan, under the auspices of the Colombo Plan which provides technical assistance for member countries in South and South East Asia. The main objects were to conduct an economic and general geological survey of a selected part of the Gilgit Agency, to examine the alluvial-gold prospects of the Chitral River, and, if time permitted, to discuss the Sind and East Bengal lignites with the Director of the Pakistan Geological Survey. This report is confined to the geological surveys in the Gilgit Agency. In June 1951, the party commenced field work from Gilgit, and spent three month in the region. Several reported mineral occurrences were examined in the Hunza, Nagir, Gilgit, Haramosh, Gupis, Ishkuman, and Yasin areas; a regional geological survey of approximately 5,000 square miles was completed.
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The writer spent four days in 1949 in the Adaminaby-Kiandra Area with J. Glover mapping the country north-north-east of the present Tunnel Line. In 1951 a fortnight more was spent on the Tunnel Lines themselves by the writer under the guidance of senior geologist D.C. Moye and geologists K. Sharp and C. Wood, who provided a large amount of information not yet available in written form. All sediments in the Tunnel Area are Ordovician, and in the case of the Tumut Pond beds an even older age is possible.
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During July and August 1951, officers of the Geophysical Section of the Bureau of Mineral resources carried out an aeromagnetic survey of the East Gippsland area of Victoria, using the Bureau's D.C.3 aircraft VH-BUR. An F24 type aerial camera was used for taking vertical photographs for the purpose of plotting flight paths of the aircraft along the flight lines. The magnetic equipment consisted of a modified magnetic airborne Detector unit type AN/ASQ-1. The aircraft was flown at an altitude of one thousand feet above terrain, along parallel flight lines running in a north-south direction one mile apart. This report comprises notes on the survey. A provisional map showing contour lines of total magnetic intensity and magnetic anomalies is attached.
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Legacy product - no abstract available
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In Portion 11, Ph. of Stockrington Diamond Drilling near an unnamed creek tributary to Surveyor Creek has disclosed coal continuously for a distance of 7,600 feet south from the northern boundary of the Portion. The seam is split and banded and the coal is inherently high in ash. Proximate analyses of the coal were carried out by the New South Wales Mines Department laboratory in Sydney. All coal ores were forwarded from the field and shale etc. bands of greater thickness than half an inch were discarded by the analysts. Stony coal or carbonaceous shale with S.G. greater than 1.6 was also rejected from the assay samples. Consequently the analyses quoted indicate a composition roughly equivalent to that which might be expected for cleaned or hand-picked coal from this area.
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This statement sets out the results of drilling in part of the Minmi Area, Newcastle District. The area covered by the drilling grid totals about 390 acres and includes parts of Portion 130, Ph. of Teralba and Portions 15 and 26, Ph. of Hexam. This statement refers to the western and central blocks of the area. Proximate analyses and calorific value determinations of the coal cores were made by the New South Wales Mines Department laboratory in Sydney. The analyses here quoted indicate a composition roughly equivalent to that which might be expected for cleaned or hand-picked coal from this area.
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A geological investigation of the Maranboy Tin Field was commenced by officers of the Bureau of Mineral Resources in May, 1951. The object of the survey is, primarily, to obtain a detailed preliminary assessment of the potential ore reserves of the field. Geological mapping and sampling of the major lode lines has been carried out in an attempt to determine the features which control ore deposition and to enable estimates to be prepared of the grade and tonnage of ore per vertical foot, which may be expected from these lode lines. The main emphasis of this work during the 1951 field season was on the major producing lines in what has been called the Southern Field, the Main Lode and part of the Stannum King lode. In addition to this programme, an area of approximately nine square miles was mapped in detail using aerial photographs. Approximately 1,000 square miles of the area surrounding Maranboy was mapped on a regional basis. The history of the field, general geology, and the geology of the individual lodes are discussed in this report. The accompanying maps are enclosed.