This folder contains the reports and supporting digital datasets from four geological studies published by SRK (later FrOGTech) consultants, between 2001 and 2007. Known as the OZ SEEBASE Compilation (Structurally Enhanced View of Economic Basement), the studies interpreted the three dimensional character of Australian sedimentary basins and their basement.

Gold deposits of the Bardoc tectonic zone; a distinct style of orogenic gold in the Archaean Eastern Goldfields Province, Yilgarn Craton, Western Australia. Australian Journal of Earth Sciences, 54, 783-800.

Detailed analysis and modeling of regional gravity and magnetic data from the Stuart Shelf around the Olympic Dam iron oxide copper-gold (IOCG) deposit, constrained by geologic observations obtained from deep drill cores, show that the eastern Gawler craton basement at 1.61 to 1.59 Ga consisted of an Archean core with two sequences of successively younger supracrustal rocks stepping out eastward from it. These were overprinted by the tectonothermal Hiltaba event. Forward models of potential-field data show no convincing evidence for the presence of widespread mafic rocks or extensional basin systems developed immediately prior to, or during, IOCG mineralization. The high intrusive level and sill-like geometry of Hiltaba Suite plutons emplaced immediately prior to IOCG mineralization is difficult to explain in terms of a genetic association with a dominantly extensional tectonic setting. Instead, the tectonic setting inferred from the basement architecture during mineralization is one of low-strain shortening, consistent with regional field observations. A case can be made for intrusion of the Hiltaba Suite in localized accommodation zones in an overall orogenic setting. This style of low-strain shortening (<10%) is consistent with maximum rates and volumes of fluid flow in the upper crust, and access of these fluids to a variety of basement rock types to buffer metal-scavenging fluids. This fluid-driving mechanism does not necessitate a role for regional mafic magmatism and volcanism in the formation of IOCG deposits. Modeling of regional gravity and magnetic data is generally applicable to exploration for IOCG systems, and other mineral systems, in covered terranes that have distinctive geophysical signatures resulting from fluid-wall-rock redox geochemical reactions.

The question as to whether geophysical data from habitats can be used to predict the occurrence of benthic biodiversity is becoming more important with the increase in the use of Marine Protected Areas as tools for marine conservation. To help answer this question and to better understand the relationship between sediment, geomorphology and benthos, a multibeam sonar survey was conducted over two areas in the northern Great Barrier Reef - Gulf of Papua region. View this article in Geological Association of Canada Special Publication 47 pp. 247-263

Numerical modelling of the western Hodgkinson Province, northeast Queensland; implications for gold mineralisation. Australian Journal of Earth Sciences, 54(1), 27-47.

This map is produced fro the Australian Fisheries Management Authority to assist in their enforcement of Australia's Maritime Bounadries. It has lots of icons to explain to Indonesian fishermen where that can and cannot fish in the Arafura Sea and Torres Strait. Originally produced using the Indonesian language. This version is an English translation. It is not for sale or public release by Geoscience Australia. Public release is thru DEH and AFMA.

This map is produced fro the Australian Fisheries Management Authority to assist in their enforcement of Australia's Maritime Bounadries. It has an explanation of the maritime boundaries and their coordinates in the Arafura Sea and Torres Strait. Originally produced using the Indonesian language. This version is an English translation. It is not for sale or public release by Geoscience Australia. Public release is thru DEH and AFMA.

This map was produced for the Australian Customs Service and shows the extent of Australia's maritime jurisdiction. March 2007 Not for sale or general release.

Map of Cable Protection Zones (Y shaped option) off Sydney, NSW. Generalized for use in ACMA PowerPoint presentations from previously produced map for ACMA GeoCat 64114 June '06.

Map of Cable Protection Zones off Sydney, NSW. Produced for ACMA in Feb '07 from previous map GeoCat 64114 June '06. This map is generalised for use in PowerPoint presentations by ACMA. Updated April '08 to include other, including not yet layed, cables.