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Perth Basin Regional Geology

The Perth Basin is a large north to north-northwest trending, onshore and offshore sedimentary basin extending about 1300 km along the southwestern margin of the Australian continent. This basin formed during multiple episodes of rifting between Australia and Greater India from the early Permian to the Early Cretaceous. The basin is structurally complex and comprises many tectonic elements, including large depocentres containing in excess of 15 km of sediments, terraces, ridges and intrabasin highs. The Perth Basin is an established hydrocarbon producing region, with 20 commercial oil and gas fields and numerous additional significant discoveries of varying size, dominantly in the onshore northern part of the basin. The basin is close to petroleum industry infrastructure, including two major gas pipelines and trucking facilities to an oil refinery near Perth.