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The Perth Basin began forming in the Late Permian during the breakup of Gondwana, as the Australian continental plate began rifting away from the African and Indian continental plates. During the Permian, what is now the Perth Basin was the eastern half of a rift valley that formed as the continental plates were pulled apart.
The Diamantina fracture zone (DFZ, Diamantina zone) [1] [2] [3] is an area of the south-eastern Indian Ocean seafloor, consisting of a range of ridges and trenches. [4] It lies to the south of the mideastern Indian Ocean features of the Wharton Basin and Perth Basin , and to the south west of the Naturaliste Plateau .
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 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 when India broke away and began moving north.
The Indian plate (or India plate) is a minor tectonic plate straddling the equator in the Eastern Hemisphere. Originally a part of the ancient continent of Gondwana , the Indian plate broke away from the other fragments of Gondwana 100 million years ago and began moving north, carrying Insular India with it. [ 2 ]
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 ...
In area, the onshore part of the Carnarvon Basin covers about 115,000 km 2 and the offshore part covers approximately 535,000 km 2 with water depths up to 3,500 m. [10] Less than 5% of the state's gas comes from fields near Dongara, part of the Perth basin, which extends about 1300 km along the southwestern margin of the continent.
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.