Following the recent discovery by Nissho-Iwai Co. in its ELs 48 and 195 of a buried Tertiary palaeochannel system containing uranium-bearing carbonaceous sediments, two further ELs 268 and 360 were taken out on the same area 40-60 km north-west of...

Along the southern margin of the Mesoproterozoic (~1590 Ma) Gawler Range Volcanics lava flows, on northern Eyre Peninsula, numerous occurrences of silver, lead, zinc and copper mineralisation have been recorded at or near the base of the volcanic...

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Field geological mapping of an 800 square mile area located immediately north-west of the Tarcoola Goldfield was carried out at a scale of approximately 1:84,480 (3/4 inch = 1 mile). A continuation of the regional geology from previously mapped areas...

This report describes the results of a MESA consultant's second generation regional geological mapping and drillhole data interpretation work for the Roopena and Uno 1:100 000 sheets on PORT AUGUSTA, performed during 1993 and 1994 as part of the SAEI...

The Cultana basement 3D Geological Model covers a region which includes the Roopena, and western half of the Cultana, 1:100,000 mapsheet areas. The subsurface geology that has been modelled comprises a succession of deformed Palaeoproterozoic...

Rock chip sampling of Proterozoic hydrothermally much altered ?volcanic basement outcrop in the vicinity of Mt Miccollo, 50 km west-northwest of Iron Knob, returned anomalous Cu, Pb, Zn and As values. A pronounced circular aeromagnetic anomaly,...

As part of an evaluation of sedimentary uranium occurrences in the Tertiary age Warrior Palaeochannel, 27 open rotary holes totalling 875.5 m, including a 9 m core cut in 1 hole, were drilled and radiometrically logged. The HQ drill core and 40...

A 5550 line mile semi-detailed airborne geophysical survey was conducted for BHP in the north Middleback Range - Whyalla area by contractor Geophysical Resources Development Co. during July-August 1969. East-west lines spaced 1/4 mile apart were...

Ground scintillometer work carried out by BHP over its SMLs in the Middleback Range area has been shown not to be an effective reconnaissance tool for finding uranium anomalies, but it does have demonstrated value for identifying sources of...

The possible untested economic base metal potential of a 10 mile long zone of airphoto-interpreted intense hydrothermal alteration of the Gawler Range Volcanics, which follows the Uno Fault near Margoon Dam, was investigated on the ground by sampling...

Uranium exploration in a known uraniferous area located immediately north of Iron Knob comprised numerous ground radiometric survey traverses made across outcropping Mesoproterozoic rocks, mainly the Corunna Conglomerate. A thin phosphatic basal bed...

The radioactive Burkitt Granite batholith, which outcrops in an area extending from 10 to 30 km north-west of Iron Knob, was surveyed by CRA in 1972 with close-spaced helicopter-borne scintillometric traverses, as part of a regional exploration...

Geochemical and isotopic data from mantle-derived mafic rocks provide important constraints on our understanding of the composition and evolution of the lithosphere through time. Since the lithosphere is sensitive to tectonic processes such as...

During the period 1745–1700 Ma, felsic and mafic rocks were intruded throughout the Gawler Craton, broadly coeval with the 1740–1690 Ma Kimban Orogeny. These rocks were previously considered part of the Lincoln Complex, a stratigraphic term defined by...

Brief description of sampling procedures and sites. All samples analysed by semi-quantitative spectrographic method for precious and rare earth elements. Results in appendix.