G50/B1-2445 Contour interval: 50

G50/B1-2542 Contour interval: 50

Legacy product - no abstract available

Legacy product - no abstract available

Legacy product - no abstract available

The Alice Springs Town Basin is a small basin filled with Quaternary alluvium, which has provided the town with water. The Inner Farm Basin is more complex, with aquifers in unconsolidated deposits of Quaternary and Tertiary age, and in Precambrian rocks. They provide groundwater for domestic and agricultural use. The results of a geophysical survey were used to plan three drilling programmes which were undertaken to investigate the occurrence of groundwater and to construct production bores for the town water supply. Several methods have been tried to construct efficient bores. The two basins contain groundwater of nine different chemical types; groundwater suitable for domestic use occurs in the vicinity of the Todd River.

Between 1951 and 1959 four engineering geophysical surveys were made in the Great Lake North District of Tasmania. Gravity, magnetic, seismic, resistivity, and radiometric methods were used to investigate geological conditions and rock properties along the line proposed for tunnels and other works for a hydroelectric scheme. The surveys provided much information that was of value in both planning and construction of the scheme. This Bulletin incorporates the description of the four surveys and the results obtained by them. During the period of the geophysical surveys more diamond-drill holes were drilled by the Commission. In this Bulletin, the region surveyed will be referred to as the Great Lake North District and the separate parts as the Intake Tunnel Area, the Outlet Portal Area, the Penstock Line Area, and the Tailrace Tunnel Area.

Kimberley region is the name given to the rugged northern extremity of Western Australia, a large part of which is composed of Precambrian rocks. The area was mapped by combined teams of Bureau of Mineral Resources and Geological Survey of Western Australia geologists between 1962 and 1967: the results of the first three years' mapping of the southeastern part of the Kimberley region are given in this Bulletin. Isotopic age determinations were made on rocks throughout the Precambrian successions, and this has proved a valuable adjunct to the mapping.

H50/B1-2341 Contour interval: 50

25% coverage west F55/B1-44