Geology of Lake Superior region outlined. Many similarities in tectonic evolution and depositional style of the 2 provinces. Recommends further research on Gawler Craton.

Excursions are on Archaean - Middle Proterozoic geology of Gawler Craton, Precambrian geology of the Adelaide Geosyncline and Cambrian of the Flinders Ranges.

Nephrite jade was formed in complex composite gneiss terrain by reaction of migrating silica with dolomitic marble at or near base of Hutchison Group during late stage folding of Kimban Orogeny. The larger of 112 known outcrops is conformable with...

By 30 June, 1980, mapping of about two-thirds of YARDEA had been completed. Work to date has been concentrated mainly on the Gawler Range Volcanics which extend over most of the northern two-thirds of YARDEA. About 80% of the volcanics have been...

Brief summary progress report.

Describes rocks from 3 areas formerly mapped as Flinders Group. Granites in each area are distinctively different, but metasediments are similar.

In December, 1979 a display of selected drillcore from the Gawler Craton, South Australia, was exhibited at the core Library complex of the South Australian Department of Mines and Energy. It was organised by the Geological Society of Australia (SA...

The area surrounding Port Lincoln can be divided into three main physiographic regions, the aeolianite plain, the coastal plain, and the highlands. Soil types range from shallow, well-drained terra rossa overlying the aeolianite, to imperfectly...

In South Australia the Gawler Province displays a history of early Proterozoic orogenic evolution and transitional tectonism leading to deposition of the Gawler Range Volcanics (ca 1500 Ma) on a relatively stable platform. A fragmentary record of...

Reports on part of major structural study. The mylonite zone has developed by progressive deformation and recrystal- lization of high grade gneisses during regional fold event. The micro- structural development corresponds with sequence of...

160 000 m3 of stone in situ is required to supply crushed rock and sealing aggregate. Diamond drilling of 2 calcrete hard, grey dolomite outcrops 4.5 km NW of Lipson revealed a deep weathering profile in section 413. Inferred reserves at the northern...

1 of the worlds principal nephrite jade deposits was formed during a late phase tectonic event, involving cross-warping and fracturing of high grade metamorphic complex.

This excursion guide is a refinement of a 6-day excursion led by Parker, Fanning and Flint in 1980 at the height of economic interest in the basement geology of the Gawler Craton. The interest in those days was for Alligator River - style uranium...

Detailed mapping undertaken between 1982 and 1987 of 48 known jade outcrops located in the Cowell - Cleve area, and diamond drilling of 3 jade outcrops and 2 ornamental marble prospects, has identified many factors controlling nephrite formation. The...

Eighteen rotary drillholes with bottom-hole core and one diamond drillhole were completed northwest of Port Lincoln and intersected quartzite, schist, calcsilicate, graphitic schist and marble attributed to the Hutchison Group. These drillholes were...

Dryland salinisation is degrading land and water resources of Lower Eyre Peninsula. It decreases land production capabilities, water quality, and the general aesthetics of the environment. Interdepartmental investigations into the occurrence and...

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Archaean and Early and Middle Proterozoic rocks of the north-western Gawler Craton have features which suggest good prospectivity for base metals, precious metals and other commodities. However, outcrop is poor and there has been relatively little...

Wilklow DDH1 was drilled by SADME east of the Miltalie mine, located NW of Cowell, to test an IP / resistivity anomaly. Drill core comprised of migmatitic Cook Gap Schist of the Palaeoproterozoic Hutchison Group was recovered down to 152.5 m hole...

South Australian graphite is reviewed in the light of published information on world deposits. A high quality coarse flake product has been mined at Uley on southern Eyre Peninsula. Geophysical investigations of deposits near Kimba are warranted, to...