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The Darling Scarp originated as the local expression, in the Perth area, of the extensive Darling Fault, a major and ancient geological discontinuity separating the Archaean Yilgarn Craton in the east from the younger Pinjarra Orogen and overlying Phanerozoic Perth Basin to the west.
The Perth Basin is also prospective for natural gas and oil, with recent exploration wells, including Origin Energy/Arc Energy's Hovea 2, confirming large resources of natural gas, but difficult reservoir geology and characteristics have prevented the full utilisation of these energy reserves. The oil is sourced from the Kockatea Shale.
On the western edge of the Yilgarn Craton, partially covered by Phanerozoic sedimentary basins and in faulted contact with the 2.7 Ga to 2.55 Ga Yilgarn tectonic domains, lies the Jimperding Gneiss Complex of 2.75 to 2.65 Ga age, composed primarily of micaceous quartzite, quartz-feldspar-biotite-garnet gneiss, andalusite and sillimanite schists ...
Rifting of Australia from India and Africa began in the Permian, resulting in the production of a rift basin and half-grabens of the basal portions of the long-lived Perth Basin. Petroleum was formed in the Swan Coastal Plain and Pilbara during this rifting, presumably in a rift valley lake where the bottom was deoxygenated (akin to Africa's ...
The Swan Coastal Plain in Western Australia is the geographic feature which contains the Swan River as it travels west to the Indian Ocean.The coastal plain continues well beyond the boundaries of the Swan River and its tributaries, as a geological and biological zone, one of Western Australia's Interim Biogeographic Regionalisation for Australia regions.
These sediments form two major sedimentary basins, the Speewah Basin and the Kimberley Basin. Sediment deposition on these basins ended in the Late Paleozoic era (419–252 Ma). Other major Proterozoic events include the Yampi Orogeny (1.4–1.0 Ga) and Elatina Glaciation (~610 Ma).
The Collie Sub-basin is a pocket of Permian sedimentary rocks with an area of 225 km 2, enclosed within much older Archean rocks of the Yilgarn Craton, near the town of Collie in southwestern Western Australia., [1] [2] Once considered a unique basin, this area, along with the smaller Wilga and Boyup Sub-basins to the south, are now classified as outliers of the Perth Basin, separated from the ...
The Australian plate is a major tectonic plate in the eastern and, largely, southern hemispheres. Originally a part of the ancient continent of Gondwana , Australia remained connected to India and Antarctica until approximately 100 million years ago when India broke away and began moving north.