Nine samples (collected by Frame-Broken Hill Pty. Ltd.) from outcrops of the Mesozoic Merino Group of south-western Victoria were examined for their spore content. Four contained sufficient spores to determine their Lower Cretaceous (? Albian) age; three were fossiliferous but lacked diagnostic species; two were barren. The determinable samples contain assemblages similar to ones in the Waarre Formation and top of the Otway Group of Port Campbell Nos. 1and 2 and Flaxman's Hill No.1.

A seismic survey of the Cooroorah Anticline near Comet, Queensland, was conducted on behalf of Associated Freney Oilfields N.L. to assist the Company to select a site for a deep stratigraphic test bore. Sedimentary rocks are considered to extend down to at least 6000 ft and probably to 10,000 ft, but there is no seismic evidence to indicate that depth to basement is not considerably greater than 10,000 ft. An unconformity in the cross-section is indicated at a depth of 4000 to 5000 ft along the axis of the Anticline, and between 6000 and 7000 ft on the flanks. The geologically mapped Big Churchyard Culmination was confirmed to a depth of approximately 6000 ft, and another culmination was defined to the south along the axis of the Anticline. The geologically mapped Redrock Culmination does not persist at depth but may be associated with a small anticlinal feature whose axis is about 2 miles east of the surface structure. Two possible sites were indicated for a stratigraphic test bore.

Legacy product - no abstract available

Legacy product - no abstract available

Legacy product - no abstract available

Legacy product - no abstract available

Water is to be conveyed from the projected Sogeri Dam, about half a mile above Rouna Falls, to the projected Power Station No.2 at the foot of the falls. One proposal is that a low-pressure penstock should be laid from the dam to a surge tank near the head of the falls, and a high-pressure penstock conveys the water from this point to the power station. The rocks are volcanic agglomerate, a few tuffs, and basal conglomerate, all part of the Astrolabe Agglomerate. They are flat-lying and undisturbed, except for jointing and one instance of minor shearing. The agglomerate and conglomerate are generally competent, but the tuff which marks the conglomerate-agglomerate transition is probably weak and incompetent. Investigation has centred on the high-pressure penstock route and power station site, and has involved outcrop mapping and seventeen diamond drill holes. The main problem on the penstock route is the upper scree slope, where boulders and rubble are up to thirty feet deep. The best route appears to be a direct one from near peg T8 over hole P5 to the power station. Power station foundations appear to be sound. Alternative routes for the low-pressure penstock are at present being investigated. Three or four shallow diamond drill holes will be needed at a later date.

Legacy product - no abstract available

Legacy product - no abstract available

The radiometric anomalies recorded by Bureau of Mineral Resources airborne scintillometer surveys and by ground investigations at the Saunders Creek Radioactive Prospect (Halls Creek W.A.) are associated with the Saunders Creek Formation. This formation has been newly defined to include a succession of coarse to medium clastics which were formed in a phase of shallow water conditions during the cycle of the Halls Creek Geosyncline. The conglomerate at the base of the formation, and in particular the heavy mineral matrix which contains thorogummite, is the source of radioactivity. The conglomerate crops out for 3 miles along the western limb of a closed anticline in the area, where structure is complicated by strike faulting and isoclinal folds. Readings for radioactivity are from 3 to 10 times background. Two bore sites have been located for the testing of the formation below the zone of oxidation.