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Investigations in the Myponga Basin have shown that there is no direct evidence for groundwater depletion. Currently there are 45 irrigation wells pumping from an unconfined/confined limestone aquifer. The potentiometric surface drops 5-6 metres...

The major units present are Middle Proterozoic poorly foliated granite, suite of acid volcanics and alkali granite. Dyke rocks include dolerite, leucogranite and acid porphyry, overlain by Pleistocene calcarenites of the Bridgewater Formation and...

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...

Major rock units on Cap Island are granitic gneisses and foliated granite of assumed Archaean to Early Proterozoic age (Sleaford Complex), and aeolianites and calcretes of Middle Pleistocene Bridgewater Formation. On Waldegrave Islands, similar...

Palaeoclimate is discussed, particularly in the central and southern parts of the continent, based on an overview of wide range of data. The oceanic record has provided the means for obtaining a refined chronological framework in which to place events...

Wilkinson 1 stratigraphic well was drilled by the SA Department of Mines and Energy in mid-1978, about 250 km south-west of Coober Pedy, in the Tallaringa Trough. Here a thick section of Cambrian claystones, limestones and evaporites, at least 594 m...

This draft paper presents field observations which can be used to qualify two Rb/Sr geochronological results obtained from biotites sampled in sheared migmatitic gneiss of the western Yilgarn Block in WA. The site visited lies in a quarry near...

Skeleton 2 penetrated sediments of the eastern Lake Eyre Basin, the Frome Embayment, and granitic basement of the Mount Painter Ridge. The hole records the southernmost known occurrence of Cadna-owie Formation in the Frome Embayment. Unexpectedly,...

Marginal marine strata of last interglacial age occur in a range of morphostratigraphic settings around the Australian coastline. Uranium-series ages for corals and molluscs are generally in accord with the accepted age for oxygen isotope substage 5e...

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,...

The County Musgrave Proclaimed Wells Area on Eyre Peninsula, situated mainly near Elliston and extending eastwards towards Lock, contains a number of small groundwater lenses of potable quality which are surrounded by brackish to saline groundwater....

MESA was contracted to find a groundwater supply for the Oak Valley Community. It was identified that the water's salinity was required to be less than 40,000 mg/l for desalination, and that the yield needed was 1 l/s. The investigation included a...

The Adelaide Geosyncline is a deeply subsident Neoproterozoic to Middle Cambrian basin complex in South Australia with a record of at least five major successive rift cycles. Each rift system has its own locus and orientation. Although the rift...

Areas of high mineral potential within Adelaidean basement lying beneath deep Recent and Tertiary Murray Basin cover, have been interpreted in the poorly known Sandleton 1:50 000 map area. The interpretation has outlined the magnetic fabric, variously...

A conceptual groundwater flow model for the Cainozoic sequence of the Gambier Embayment is developed using hydraulic head distribution, environmental isotopes and hydrochemical data.<

Some of the first dates from the Simpson / Tirari Desert are presented. It is argued that Late Pleistocene episodes of dune development are widespread, and may be at least as important as the Holocene episodes in depositing dune sediments and shaping...

A lamprophyre province has been identified in the Truro area comprising numerous dykes and at least one diatreme. The regional extent of the province has not been determined. The lamprophyre dykes, of the calc-alkaline suite and classed as minette,...

Significant anthropogenic land subsidence within the Port Adelaide estuary of up to 0.7 metres is inferred from the Holocene stratigraphy and associated radiocarbon dates on materials that act as palaeo-sea level indicators. Principal contributing...

Stable isotopes (deuterium, carbon-13 and oxygen-18) and radiocarbon (carbon-14) have been used in conjunction with chemical data to evaluate recharge mechanisms, groundwater residence time and palaeohydrology within the confined Dilwyn Formation sand...