In January, 1954, the Bureau of Mineral Resources began diamond drilling in the Edith River, N.T., to test the grade and extent of uranium mineralisation in two uranium-bearing deposits. The uranium mineral, mate-autunite, occurs in narrow siliceous reef formations. Surface and drill core samples all returned less than 0.1% U3O8. Radiometric logging of the holes showed no significant increase of radioactivity with depth. Shaft sinking proved the deposits to be small and lenticular.

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.

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.

During the Mullins Harbour - Wedau Reconnaissance (South Eastern Papua) carried [out] in 1953 by Mr. J.E. Thompson, Senior Geologist of the Bureau of Mineral Resources, a section was sampled along the Middle Nigo-Nigo River. Of a number of samples sent to Canberra for petrological and palaeontological examination only eight proved fossiliferous. The following is a list of samples examined listing lithology and microfauna determined by the author and the age assigned to each.

The earliest recorded geological work on the area covered by the Minilya four-mile sheet was that of Woodward (1907) who examined the country north of the Minilya River and noted the limestone on the west flank of the Giralia anticline. In 1909 A. Gibb Maitland described the Carboniferous and Permian succession in the area drained by the Gascoyne, Lyons, Minilya and Lyndon Rivers, but referred the whole sequence to the Carboniferous. Geologists of Oil Search Ltd., under D. Dale Condit, examined the Carnarvon Basin in 1932, 1934 and 1935. Raggatt (1936) described the stratigraphy of the Permian in some detail and subdivided the Cretaceous sequence. Raggatt and Fletcher (1937) examined the fauna of the Permian of the Carnarvon Basin. Teichert did detailed stratigraphic work in the Wandagee area from 1938 to 1940. Geologists of the Bureau of Mineral Resources mapped the Minilya Sheet from 1948 to 1951, using R.A.A.F. aerial photographs. The present sheet is entirely the result of the mapping of the Bureau geologists although much of the stratigraphic nomenclature is adapted from Raggatt's and Teichert's work.

A seismic reflection survey was carried out in the Parish of Darriman, Victoria. The survey was planned to investigate a gravity anomaly, which may be an indication of a structure within the sedimentary section favourable to the accumulation of oil or natural gas. For the most part reflections were exceptionally good, and it was possible to trace one reflecting layer over most of the area. Contouring showed the presence of an anticlinal structure, plunging to the east, but rising and broadening to the west. On the flat crest of the structure, there is probable closure in two places. The thickness of the Tertiary sediments may be a maximum of 6,000 feet, but may be only 3,000 feet on the crest of the structure and 4,000 feet on the flanks.

This report deals with the radioactive prospect known as the Burrundie Prospect and with the area surrounding the prospect. Mapping carried out in this area to date (June, 1954) has been of a reconnaissance nature only and the report and the accompanying plans are designed to assist future work of a more detailed character. Significant radioactivity in the Burrundie area was first discovered on 20th May, 1954, by a party engaged in regional mapping and including geologists B.P. Walpole and J.G. Best. Since that date further anomalies have been located in the area surrounding the initial discovery.

The following report concerns the geology and mineralization of two uranium prospects in the Gimbat - Snake Creek Area of the Northern Territory. One of these prospects, referred to as Sleisbeck, can be recognised as one of the most favourable yet discovered in the Northern Territory. The radioactivity occurs in a quartzite breccia outcropping over a length of 1.5 miles and with a width of as much as several hundred feet. Geiger counter readings of 2 - 100 times background, occur frequently along the entire length of the outcrop, visible mineralization being present at three separate localities. The state of this mineralization, its associations and the geological settings are favourable to the possible occurrence of uranium mineralization at depth. Recommendations are made for further work, and problems in regional geology are discussed. The writer considers the sections of this report designated "Mineralization" and "Conclusions" to be the most important for a knowledge of the actual uranium occurrences. The remaining information is mainly geological, and, while highly pertinent, may not be of urgent interest to readers with a limited amount of time.

This report describes the geophysical surveys made by the Geophysical Section of the Bureau to assist in the search for oil in the Carnarvon Basin (North-west) of Western Australia. The geophysical work completed to the present time consists of gravity and seismic surveys.

This report is an account of geological and geophysical investigations of the Burrundie Radioactive Prospect, which is located three and a half miles west-south-west of Burrundie Siding on the North Australian Railway.