From 1 - 10 / 86
  • In July, 1948, the writer visited Roma with the object of collecting material for micropalaeontological study as no similar investigation had been carried out on the sediments in the area which Whitehouse refers to as the Roma Series. Systematic collections were made and the results of the examination so far have been entirely satisfactory. About two hundred samples were collected for examination for foraminifera and where possible specimens of typical species of the larger fossils of the Roma series were gathered. This report comprises a brief overview of the visit, notes on the samples, and notes on foraminiferal assemblages in the deposits in the Roma area.

  • This report describes the results of a micropalaeontological examination of samples taken from a depth of 0 to 922 feet down.

  • This progress report briefly describes the developments of chief interest in the Cobar geophysical survey up to 4th June, 1948. Geophysical, magnetic, geological, and gravity surveys were completed in the area between March, 1947, and April, 1948. A summary of the results of drilling and survey work completed to date is given in this report. Recommendations for future work are discussed. Plans showing results from the Cobar geophysical survey have been included.

  • This report describes the results of a micropalaeontological examination of samples taken from the depth of 1 to 505 feet down.

  • This report discusses the proposed detonation of surplus R.A.A.F. bombs at Tadji, New Guinea. A visit was made to the bomb area in March, 1948, to observe the problems involved in detonating the bombs en masse for the purpose of a seismological study of the crustal layering of the island. Various localities in New Guinea, Papua and the neighbouring islands were visited to estimate the practicability of installing temporary seismic stations to record the detonation.

  • Report on gravity survey work and drill testing completed at Leigh Creek between 1947 and 1948. Observations and results are briefly discussed.

  • This report is a preliminary description of geophysical work undertaken by officers of the Geophysical Section at the request of the Zinc Corporation Ltd., in connection with the search for structures in the Frome Embayment which may contain natural gas and oil. The object of the survey, methods, results, and interpretation of the results are discussed in this report. Accompanying plans are included.

  • The second drill hole on the area of the Dapville No. 1 anomaly has been completed and some details of the results are given in this report. Following the discovery of this and other magnetic anomalies of low intensity in the course of surveying, there is a need for the determination of priority on the part of the operating company, in the testing of these anomalies. The principal purpose of this report is to draw further attention to the Peak magnetic anomaly and to discuss various factors which the company may desire to take into consideration in the determination of the priority question mentioned above.

  • This report covers the plane table survey work carried out from December, 1947, to February, 1948, on the ridge running N.W. from the U.S.A. Legation, and from Brick Trig. Station to the Brick Works. The stratigraphy, soil, structure, and topography of the area are discussed in the report.

  • At the request of the Broken Hill Proprietary a geophysical test survey, employing gravity and magnetic methods, was carried out near Wollongong, N.S.W. by geophysicists of the Bureau. The area over which these tests were made is part of the Southern Coalfield of N.S.W. and plans are being made to develop a colliery in it. The subsurface geology is known in part from five drill holes, namely, Nebo No. 2, 5, and 6 and Wongawilli No. 7 and 8. Basalt sills of considerable thickness were encountered in Nebo No. 6 and Wongawilli No. 8. The proximity of sills to the coal seams has resulted, in parts of the Southern Coalfield, in the cindering of the coal, and for this reason it is a matter of considerable importance in planning a colliery to know the area occupied by the sills. The technical aspects of testing, results, and conclusions are discussed in this report.