ABSTRACT: Cambrian-Ordovician Petroleum in the Centralian Superbasin: Relationships with Sea Level Changes

GORTER, JOHN D., John D. Gorter Pty. Ltd., Claremont, Western Australia, Australia

Cambrian-Ordovician sedimentary basins are widespread in central Australia. These basins are the remnants of the once more extensive Proterozoic Centralian superbasin. The Centralian superbasin includes the Amadeus, Georgina, Ngalia, and Officer basins. Recent advances in sequence stratigraphy in some of these basins allows predictions of source rock and reservoir distribution to be made in the less well known basins. Significant noncommercial hydrocarbon discoveries have been made in Cambrian rocks in the Georgina and Warburton basins and in the Amadeus basin commercial oil and gas discoveries made have been sourced from and reservoired in Upper Cambrian and Lower Ordovician sediments. The localization of source and reservoir rocks in these basins is contrasted with eustatic sea leve curves and a model linking the development of the source and reservoir facies is proposed.

AAPG Search and Discovery Article #91015©1992 AAPG International Conference, Sydney, N.S.W., Australia, August 2-5, 1992 (2009)