U-Pb zircon ages from the southwestern Karoo Basin, South Africa--Implications for the Permian-Triassic boundary

Abstract

Research Article| August 01, 2009 U-Pb zircon ages from the southwestern Karoo Basin, South Africa—Implications for the Permian-Triassic boundary Andrea Fildani; Andrea Fildani 1Chevron Energy Technology Company, 6001 Bollinger Canyon Road, San Ramon, California 94583, USA Search for other works by this author on: GSW Google Scholar Amy Weislogel; Amy Weislogel 2Department of Geological Sciences, University of Alabama, Tuscaloosa, Alabama 35487, USA Search for other works by this author on: GSW Google Scholar Nicholas J. Drinkwater; Nicholas J. Drinkwater 3Chevron Southern African Business Unit, 1400 Smith Street, Houston, Texas 77002, USA Search for other works by this author on: GSW Google Scholar Tim McHargue; Tim McHargue 1Chevron Energy Technology Company, 6001 Bollinger Canyon Road, San Ramon, California 94583, USA Search for other works by this author on: GSW Google Scholar Anthony Tankard; Anthony Tankard 471 Lake Crimson Close SE, Calgary, Alberta T2J 3K8, Canada Search for other works by this author on: GSW Google Scholar Joe Wooden; Joe Wooden 5Stanford–U.S. Geological Survey Micro-Analysis Center, Stanford University, Stanford, California 94305, USA Search for other works by this author on: GSW Google Scholar David Hodgson; David Hodgson 6STRAT Group, Department of Earth and Ocean Sciences, University of Liverpool, Liverpool L69 3GP, UK Search for other works by this author on: GSW Google Scholar Stephen Flint Stephen Flint 6STRAT Group, Department of Earth and Ocean Sciences, University of Liverpool, Liverpool L69 3GP, UK Search for other works by this author on: GSW Google Scholar Geology (2009) 37 (8): 719–722. https://doi.org/10.1130/G25685A.1 Article history received: 20 Nov 2008 rev-recd: 16 Mar 2009 accepted: 30 Mar 2009 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 Andrea Fildani, Amy Weislogel, Nicholas J. Drinkwater, Tim McHargue, Anthony Tankard, Joe Wooden, David Hodgson, Stephen Flint; U-Pb zircon ages from the southwestern Karoo Basin, South Africa—Implications for the Permian-Triassic boundary. Geology 2009;; 37 (8): 719–722. doi: https://doi.org/10.1130/G25685A.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 U-Pb ages determined using sensitive high-resolution ion microprobe-reverse geometry on 205 single-grain zircons from 16 ash beds within submarine fan deposits of the Ecca Group provide the first evidence of a marine Permian-Triassic (P-T) boundary in the Karoo Basin of South Africa. These U-Pb ages provide an objective basis for correlating the deep-marine sediments of the southwest Karoo Basin with fluvial-deltaic deposits in the central and eastern parts of the basin where the P-T boundary is recorded in a diverse macrofauna. Furthermore, these new zircon ages and their correlation imply asymmetric subsidence and variable sedimentation rates across the basin. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.