Terrestrial-marine carbon cycle coupling in ∼500-m.y.-old phosphatic brachiopods

Abstract

Research Article| August 01, 2005 Terrestrial-marine carbon cycle coupling in ∼500-m.y.-old phosphatic brachiopods Clinton A. Cowan; Clinton A. Cowan 1Geology Department, Carleton College, One North College Street, Northfield, Minnesota 55057, USA Search for other works by this author on: GSW Google Scholar David L. Fox; David L. Fox 2Department of Geology and Geophysics, University of Minnesota, 310 Pillsbury Drive SE, Minneapolis, Minnesota 55455-0129, USA Search for other works by this author on: GSW Google Scholar Anthony C. Runkel; Anthony C. Runkel 3Minnesota Geological Survey, 2642 University Avenue W, St. Paul, Minnesota 55114-1057, USA Search for other works by this author on: GSW Google Scholar Matthew R. Saltzman Matthew R. Saltzman 4Department of Geological Sciences, The Ohio State University, 275 Mendenhall Laboratory, Columbus, Ohio 43210-1398, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Clinton A. Cowan 1Geology Department, Carleton College, One North College Street, Northfield, Minnesota 55057, USA David L. Fox 2Department of Geology and Geophysics, University of Minnesota, 310 Pillsbury Drive SE, Minneapolis, Minnesota 55455-0129, USA Anthony C. Runkel 3Minnesota Geological Survey, 2642 University Avenue W, St. Paul, Minnesota 55114-1057, USA Matthew R. Saltzman 4Department of Geological Sciences, The Ohio State University, 275 Mendenhall Laboratory, Columbus, Ohio 43210-1398, USA Publisher: Geological Society of America Received: 21 Jan 2005 Revision Received: 22 Apr 2005 Accepted: 22 Apr 2005 First Online: 03 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 The Geological Society of America, Inc. Geology (2005) 33 (8): 661–664. https://doi.org/10.1130/G21434AR.1 Article history Received: 21 Jan 2005 Revision Received: 22 Apr 2005 Accepted: 22 Apr 2005 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 Clinton A. Cowan, David L. Fox, Anthony C. Runkel, Matthew R. Saltzman; Terrestrial-marine carbon cycle coupling in ∼500-m.y.-old phosphatic brachiopods. Geology 2005;; 33 (8): 661–664. doi: https://doi.org/10.1130/G21434AR.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 Carbon isotope compositions (δ13C) of inarticulate brachiopod shells from Upper Cambrian sandstone in the cratonic interior of Laurentia record a 5‰ positive excursion that correlates biostratigraphically with the global Steptoean positive isotopic carbon excursion. A consistent 6‰ negative displacement in brachiopod δ13C relative to carbonate values is interpreted to represent an onshore-offshore gradient in the isotopic composition of dissolved inorganic carbon in Cambrian seawater. Thus, these ∼500-m.y.-old chitinophosphatic brachiopod shells preserve evidence for carbon cycle coupling between the ancient atmospheric, oceanic, and terrestrial reservoirs in the time before embryophytic land plants. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.