Legacy product - no abstract available Never published, see Record 1965/048 instead

The seismic reflection survey was undertaken by the Bureau of Mineral Resources on top of gravity and magnetic surveys in the Gippsland Lakes district, Victoria. The aim of the seismic survey is to convience the favourable structure to the accumulation of oil being present on the overlying Tertiary rocks. Two north-south traverses and one running east-west and crossing the other two were surveyed.

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These documents have been scanned by the GA Library. Please refer to the document for contents.

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These documents have been scanned by the GA Library. Please refer to the document for contents.

Samples from four bores in the Great Artesian Basin of New South Wales were submitted for micropalaeontological examination, by the Water Conservation and Irrigation Commission of New South Wales. These bores are Bore No. 8213, "Trenton" Coonamble, No. 8262, "Montrose", Dubbo, No. 8268, "Fair Oak", Dubbo, and No. 8272, Wanaaring, Bourke. The results of the detailed examination of these bores are given below.

The information presented in this paper was collected in 1947-8 by a combined scientific team composed of officers from the Commonwealth Scientific and Industrial Research Organization and the Commonwealth Bureau of Mineral Resources, Geology and Geophysics, who carried out a reconnaissance of the natural resources of the Barkly Region. The subsurface water supplies and the geological features which assist in determining the characteristics of water supplies are discussed in this report.

In the Edith River area uranium occurs as meta-autunite associated with apatite and hematite in narrow siliceous reef formations which are in part brecciated and mylonized. The reefs, which dip steeply west and strike mostly north-north-west, occur over a length of about 3 miles in a north-south, sheared greisenized, zone in granite. Two main types of granite are present, a coarse grained granite and a finer-grained adamellite, which is intrusive into the coarse granite. In places partial digestion of the coarse by the fine granite has produced a porphyritic "hybrid" granite. All granites except the greisenized granite of the sheared zone give high background counts, 2 to 3 times as high as that of the sediments of the Brocks Creek group into which the coarse granite is intrusive. Within the reef formations the distribution of uranium-bearing material is patchy. In many places the best geiger readings are obtained where cross reefs or fractures with a north easterly strike cut the main reefs. Surface samples were taken across most places where significant Geiger readings were obtained and all returned less than .1% U3O8. Commercial production from the field will only be possible if the grade of the original ore has been greatly affected by surface leaching and a site was selected for a shaft to test the primary ore.

Dr. M.F. Glaessner published his paper in Volume 88, No. 4, 1951 of this Journal in which he describes foraminiferal zones in the Tertiary of Australia and in which he summarises known and unpublished information on the Australian Tertiary sequence. A great deal of precise stratigraphic work has been done on the Australian Tertiary rocks in the past five years. Glaessner knew of this and it is regretted that he did not wait until the results of this work were available. Recent discoveries made since Glaessner's paper was prepared, have made necessary a drastic revision of the age correlations of the Victorian Stages and have emphasised the undesirability of prematurely publishing material based on investigations which are still in progress. A discussion of this paper follows herein.