Weddell triple junction: The principal focus of Ferrar and Karoo magmatism during initial breakup of Gondwana

Research Article| June 01, 2000 Weddell triple junction: The principal focus of Ferrar and Karoo magmatism during initial breakup of Gondwana D.H. Elliot; D.H. Elliot 1Department of Geological Sciences and Byrd Polar Research Center, Ohio State University, Columbus, Ohio 43210, USA Search for other works by this author on: GSW Google Scholar T.H. Fleming T.H. Fleming 1Department of Geological Sciences and Byrd Polar Research Center, Ohio State University, Columbus, Ohio 43210, USA Search for other works by this author on: GSW Google Scholar Geology (2000) 28 (6): 539–542. https://doi.org/10.1130/0091-7613(2000)28<539:WTJTPF>2.0.CO;2 Article history received: 15 Nov 1999 rev-recd: 20 Mar 2000 accepted: 28 Mar 2000 first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation D.H. Elliot, T.H. Fleming; Weddell triple junction: The principal focus of Ferrar and Karoo magmatism during initial breakup of Gondwana. Geology 2000;; 28 (6): 539–542. doi: https://doi.org/10.1130/0091-7613(2000)28<539:WTJTPF>2.0.CO;2 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 Middle Jurassic Ferrar tholeiites of Antarctica were emplaced during a short time interval (<1 m.y.) into an active rift system initiated in the Early Jurassic. Ferrar magmas were dispersed into the Antarctic sector of Gondwana from a source in the Weddell Sea region, within the thermal anomaly that also gave rise to the Karoo basaltic rocks of southern Africa. The Golden Gate lavas, part of the Karoo central area low-Ti tholeiites, show geochemical similarities to Ferrar rocks. Tectonic and geochemical relationships of the Ferrar and Karoo low-Ti magmas, which constitute a major part of the Jurassic Gondwana large igneous province, suggest that they were derived from a single source associated with a triple junction in the proto-Weddell Sea region. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.