Permian-Triassic boundary in eastern Nevada and west-central Utah

Abstract

Research Article| May 01, 1976 Permian-Triassic boundary in eastern Nevada and west-central Utah JAMES W. COLLINSON; JAMES W. COLLINSON 1Department of Geology and Mineralogy, Ohio State University, Columbus, Ohio 43210 Search for other works by this author on: GSW Google Scholar CHRISTOPHER G. ST. C. KENDALL; CHRISTOPHER G. ST. C. KENDALL 2EXXON Production Research Company, Houston, Texas 77001 Search for other works by this author on: GSW Google Scholar JONATHAN B. MARCANTEL JONATHAN B. MARCANTEL 3Shell Oil Company, Houston, Texas 77001 Search for other works by this author on: GSW Google Scholar Author and Article Information JAMES W. COLLINSON 1Department of Geology and Mineralogy, Ohio State University, Columbus, Ohio 43210 CHRISTOPHER G. ST. C. KENDALL 2EXXON Production Research Company, Houston, Texas 77001 JONATHAN B. MARCANTEL 3Shell Oil Company, Houston, Texas 77001 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1976) 87 (5): 821–824. https://doi.org/10.1130/0016-7606(1976)87<821:PBIENA>2.0.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Get Permissions Search Site Citation JAMES W. COLLINSON, CHRISTOPHER G. ST. C. KENDALL, JONATHAN B. MARCANTEL; Permian-Triassic boundary in eastern Nevada and west-central Utah. GSA Bulletin 1976;; 87 (5): 821–824. doi: https://doi.org/10.1130/0016-7606(1976)87<821:PBIENA>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 SocietyGSA Bulletin Search Advanced Search Abstract The Permian-Triassic boundary in eastern Nevada and west-central Utah is placed at a disconformity above the Gerster Formation (Wordian) and below the Thaynes Formation (Smithian and Spathian). Evidence of subaerial erosion at the disconformity includes local truncation of Gerster beds by channels filled with chert and quartzite-pebble conglomerate. Westward onlap of Lower Triassic sedimentary deposits, as demonstrated by conodont zones, suggests an east-facing paleoslope over which the Early Triassic sea slowly advanced. The Sonoma orogeny, which coincided with the Late Permian—Early Triassic hiatus, may have been the cause of regional upwarping in eastern Nevada that produced the eastward paleoslope. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.