Legacy product - no abstract available

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Legacy product - no abstract available

Legacy product - no abstract available

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Legacy product - no abstract available

abstract

Legacy product - no abstract available

In the course of a study to examine the depths to various regolith layers in the North Arunta area, anomalous geochemistry values where noticed in an area of particularly dense drilling. Company reports were obtained to further examine the area investigate if a prospect had been identified. A detailed magnetic survey (100 m line spacing) of the area was also revealed. With the aid of the company reports and data geology and mineralisation of the Abrolhos prospects have been investigated.

The Murray Canyons area of interest extends across a series of two major Mesozoic basins (Otway and Bight), remnants of a thin Permian basin (Troubridge), and broad areas of thin Cainozoic cover over continental crust (Encounter Bay Shelf) and oceanic crust (Australia-Antarctica Basin). It has been possible to classify and map a range of different levels of petroleum prospectivity in this area by using a risking scheme that assesses the likelihood of hydrocarbon generation and migration, sealed reservoirs, and valid traps. The level of knowledge and confidence in the risk assessment is also incorporated into the ranking of petroleum prospectivity. Using this approach, its is possible to identify areas that are likely to be explored for petroleum accumulations. These include one proven prospective area (Outer Crayfish), four indicated prospective areas (East Ceduna, East Duntroon, Inner Crayfish and Morum Sub-basin 1), and one area with inferred prospectivity (Morum Sub-basin 2). The Murray Canyons area of interest also includes eight areas which are considered a high risk for the presence of petroleum accumulations, and are thus less likely to be explored (Trumpet Shelf, Couedic, Recherche-Hunter, Otway Thin Outer Cretaceous, Murray Canyons, Troubridge 1, Troubridge 2, and Encounter Bay Shelf). Two non-prospective areas are present where hydrocarbons accumulations are considered to be absent, and are unlikely to be explored (Otway Volcanic Buildup and Abyssal Plain).