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The Council uses volcanic ash to increase the durability of unsealed limestone rubble roads. The quarry was closed because of instability of the quarry faces. Auger drilling of 14 holes (67.8 metres) proved that the only sources of ash available lie...

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The crystalline basement of COOBER PEDY comprises portion of the northern part of the Gawler Craton. Outcrop is scattered and is generally intensely weathered. Sediments, including sandstone, arkose and banded iron formation, were deposited on an...

Geochronological analyses of samples of the Willochra Subgroup and the Tapley Hill Formation, which unconformably overlie the Beda Volcanics, give ages of 724±40 Ma and 750±53 Ma respectively, thereby indicating that the original age determination of...

Investigations aimed to determine if leachate from the municipal dump is likely to reach the water table and travel toward the Blue Lake - Mount Gambiers water supply 1 km to the east. Network of observation wells were established to monitor the...

The wholly cored SADME DDH Myall Creek RC1 was sited at the eastern extremity of the exposed Gawler Range Volcanics, and was completed [as a vertical hole] at 551.34 m total depth [the limit of drilling rig capability] on 26/10/1978, without reaching...

A shallow refraction survey was carried out in the vicinity of a proposed dam site at the Mt. Lofty Botanic Gardens at Piccadilly to measure the thickness of overburden and weathered rock at the site, and so determine foundation requirements and...

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17 eruptive centres constitute a western extension to the Quaternary Newer Volcanics of Central and Western Victoria. Discusses drilling of composite dome and palaeomagnetism.

Ordovician porphyritic rhyolite, 900 metres north of Mt Monster, 12 km south of Keith, was quarried from 1955 - 1976 to produce 548 477 tonnes of rail ballast and road sealing aggregate. This is an important aggregate resource, being finer grained and...

Gravity and detailed aeromagnetic data, as summarised in the Metallic Exploration Index Series for CURNAMONA and OLARY, are interpreted. Other detailed geophysical and geological work is incorporated. The interpretation aims to define the areal...

Outcrops of Proterozoic rocks consist of a complex suite of comagmatic intrusives which exhibit a variable degree of deformation and are correlated with the Early Proterozoic Lincoln Complex. On southern Saint Peter Island, felsic volcanics,...

Examination of miscellaneous blocks from the diatreme, lying between 2 and 5 km north of Truro, revealed only two possible tuffs which may be part of a matrix between the ejecta. Other blocks include a lamproite with more ferromagnesian minerals than...

Geological interpretation of image-processed aeromagnetic data, and evidence gained from recent stratigraphic traverse drilling to investigate the lithostratigraphic and tectonic nature of magnetic domains, plus the results of previous investigations,...

Lamprophyres have been of widespread interest since discoveries of economic deposits of diamonds were made in lamproites in 1978. Work on systems of classification is continuing, but has not yet resulted in a universally accepted scheme. The dyke...

Additional sampling of drill core has revealed the presence of a third rock type, a fine-grained amphibolite with a probable picrobasaltic composition, besides the metadolerite and albitite already logged. The ultramafic rock suggests an affinity with...

This report was prepared as a summary of all open file mineral exploration data from the KINGOONYA 1:250000 mapsheet area that are held in the SADME records management Envelope system. The aim of the holdings review was to describe past exploration,...

Investigation of the Upalinna Diapir, located 20 km east of Wilpena Pound in the Adelaide Geosyncline, has identified a number of structural and sedimentary features normally associated with evaporite diapirs. The Upalinna Diapir is a small,...

Picking the top of basement beneath the Cooper and Eromanga Basins in South Australia has proven to be difficult in recent years. Criteria are established to recognise basement lithologies on wireline logs and to distinguish them from the overlying...