Legacy product - no abstract available

In the vicinity of Roma about 3000-4000ft. of Mesozoic sediments overlie a basement consisting or granite and -metamorphic rocks. Permian rocks outcrop about 70 miles to the north of Roma. Considerable flows of natural gas, and small quantities of oil, have been found since 1900 in many of the bores which have been drilled in the Roma area; but no major commercial supplies have been developed. The sediments are mostly obscured by soil. Experience also suggests that pitting and shallow core drilling have limited value. It is therefore difficult, using normal geological methods, to determine geological structures in the region and to work out, except in the broadest way, the geological structure in the areas tested by drilling. In the present survey, gravity and magnetic methods were applied in an attempt to gain some indications of basement topography, which might be related to possible oil-bearing structures. It was found that the major geophysical anomalies are not related to known basement topography, but are probably due to variations of rock-types within the basement or other causes. However, it was possible to isolate some- gravity anomalies which might be related to high basement features. These anomalies are being tested by seismic methods to locate possible drilling targets.

An examination of the deposits took place from 29th June to 13th July, 1950. Very heavy rains hampered the work, but it was possible to make a careful examination of the volcanic areas, and also to gain a general idea of the geological conditions. Some mapping was carried out by compass-pace methods but it is evident that more detailed surveying, with the use of aerial photographs, in order to produce a geological map of the D'Entrecasteaux group, would be worthwhile. An account of this examination and its results is given in this report. The general geology of the area and vegetation are described. The location, nature, extent and destruction of the sulphur deposits are discussed. A note on clays resulting from hydrothermal action upon volcanic flow rocks is appended.

The Corporate Archive consists of deposited copies of all internal publications and documents of the agency and its predecessors: the Bureau of Mineral Resources, Australian Geological Survey Organisation and those which have merged with it over the years, such as AUSLIG. These include unique material such as field notebooks and a small quantity of manuscripts. Unrestricted items in this collection are currently being digitised to improve access

There are three areas so far discovered, each in a different state of development. They are: the East Finniss deposit, which has had a number of costeans and three shafts sunk on it by the present party; the Brown's mine deposit, which has an old shaft and many costeans sunk for copper around 1906; and the Mt. Fitch prospect which has two costeans and an 11 ft. shaft, all old and some distance from the present area of interest. This report deals only with an assessment of the present position and with recommendations for future work in the uranium prospects.

A survey of Australian resources and consumption of antimony, both as metal and antimonial lead, was started later in 1949. This survey had been nearly completed in August 1950, when the Defence Supply Planning Branch of the Department of Supply requested that a survey of the antimony position similar to that for "Graphite" be prepared on their behalf. As the production and marketing of antimony metal is undertaken by one company only in Australia, and of antimonial lead by another, statistics of post-war production, civil consumption and end uses have been readily available.

This palaeontological collection comprises 100,000+ locality based samples derived from BMR/AGSO/GA field survey programs, from external organisations (e.g. exploration companies, state geological surveys), or from donations or bequests by private collectors over the last 100 years. It also includes laboratory subsamples, residues and microscope slides and is often referred to as the F Collection or Bulk Fossil Collection.

This report gives an overview of the known bauxite resources of Victoria. Descriptions are given of the general geology of the area, of the individual deposits, and of the bauxite.

This report gives an overview of the bauxite resources of Tasmania. The report provides a summary of the work, investigation, and sampling conducted between 1941 and 1949. The mode of occurrence and types of bauxite are described. A description, which includes a statement of reserves, is given of each of the eleven individual deposits.

This mineral collection comprises 13,000+ locality based museum quality specimens derived from BMR/AGSO/GA field survey programs, from external organisations (e.g. Australian Museums, state geological surveys), or from donations or bequests by private collectors. It includes specimens from all over the world with a strong emphasis on minerals from Broken Hill.