Warakurna large igneous province: A new Mesoproterozoic large igneous province in west-central Australia

Abstract

Research Article| February 01, 2004 Warakurna large igneous province: A new Mesoproterozoic large igneous province in west-central Australia Michael T.D. Wingate; Michael T.D. Wingate 1Tectonics Special Research Centre, School of Earth and Geographical Sciences, University of Western Australia, Crawley, WA 6009, Australia Search for other works by this author on: GSW Google Scholar Franco Pirajno; Franco Pirajno 2Geological Survey of Western Australia, 100 Plain Street, East Perth, WA 6004, Australia Search for other works by this author on: GSW Google Scholar Paul A. Morris Paul A. Morris 2Geological Survey of Western Australia, 100 Plain Street, East Perth, WA 6004, Australia Search for other works by this author on: GSW Google Scholar Author and Article Information Michael T.D. Wingate 1Tectonics Special Research Centre, School of Earth and Geographical Sciences, University of Western Australia, Crawley, WA 6009, Australia Franco Pirajno 2Geological Survey of Western Australia, 100 Plain Street, East Perth, WA 6004, Australia Paul A. Morris 2Geological Survey of Western Australia, 100 Plain Street, East Perth, WA 6004, Australia Publisher: Geological Society of America Received: 03 Sep 2003 Revision Received: 20 Oct 2003 Accepted: 24 Oct 2003 First Online: 03 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2004) 32 (2): 105–108. https://doi.org/10.1130/G20171.1 Article history Received: 03 Sep 2003 Revision Received: 20 Oct 2003 Accepted: 24 Oct 2003 First Online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Michael T.D. Wingate, Franco Pirajno, Paul A. Morris; Warakurna large igneous province: A new Mesoproterozoic large igneous province in west-central Australia. Geology 2004;; 32 (2): 105–108. doi: https://doi.org/10.1130/G20171.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Coeval mafic igneous rocks emplaced rapidly over ∼1.5 × 106 km2 in western and central Australia represent the erosional remnants of a late Mesoproterozoic large igneous province, named here the Warakurna large igneous province. SHRIMP U-Pb dating of rocks separated by as much as 1500 km indicates that the main episode of magmatism occurred between 1078 and ca. 1070 Ma. The Warakurna large igneous province includes layered mafic- ultramafic intrusions and mafic to felsic volcanic rocks and dikes in central Australia, a 1000-km-long mafic sill province in Western Australia, and several swarms of mafic dikes. The large areal extent and short duration imply emplacement above a mantle-plume head. Despite their wide separation, the mafic rocks have similar mid-oceanic-ridge basalt–normalized trace element patterns and rare earth element characteristics. West-directed paleocurrents, westward-radiating dike swarms, and the occurrence of high-Mg rocks indicate that the center of the plume head was located beneath central Australia. Other late Mesoproterozoic large igneous provinces, in the Laurentia and Kalahari cratons, appear to be significantly older than the Warakurna large igneous province in Australia and thus are unlikely to be related to the same mantle-plume head. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.