d894f784-da31-4e03-a9fe-13bc6fae4c0b urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2026-01-11T05:40:52 creation ISO 19115 2016 Southwest Margin Surveys - Information Sheet d894f784-da31-4e03-a9fe-13bc6fae4c0b As part of Geoscience Australia's Southwest Margin Project, two major marine surveys were undertaken (from October 2008 to February 2009) to investigate the resource potential of deep-water frontier areas on the southwest Australian continental margin. <ol> <li>Southwest Australian Margin Regional Marine 2D Seismic Survey (S310) - Areas covered by the seismic survey include the Mentelle Basin, North Perth Basin (Zeewyck and Houtman Sub-basins), Southern Carnarvon Basin and the Wallaby Plateau. Data acquired: 7300 kilometres of 2D seismic (12 second record length, 8 km solid streamer), gravity and magnetic data.</li> </ol> In addition to the new seismic reflection data, Geoscience Australia has reprocessed selected open-file industry seismic lines in the offshore Northern Perth Basin (11,700 line km) that provides ties to most wells in the Abrolhos and Houtman sub-basins. <ol> <li>Southwest Australian Margin Marine Reconnaissance Survey - The marine reconnaissance survey investigated the geology and marine environments of the offshore North Perth and Southern Carnarvon Basins and the Wallaby Plateau. Data acquired: multibeam swath bathymetry (230,000 km2), gravity and magnetics (25,000 line km), sub-bottom profiler (25,000 line km), geological samples (190 rocks from 53 dredge sites)</li> </ol> {"type": "Polygon", "coordinates": [[[108.0, -35.0], [116.0, -35.0], [116.0, -23.0], [108.0, -23.0], [108.0, -35.0]]]} 108.0 116.0 -35.0 -23.0 AU-WA Earth Sciences Promotional Material Published_External bathymetry marine seismic sections seismics Download the file (pdf) documentDigital Download the file (pdf) PDF Unnamed resource documentDigital HTML