Geological implications of Middle Cambrian boulders from the Haymond Formation (Pennsylvanian) in the Marathon basin, west Texas

Abstract

Research Article| February 01, 1984 Geological implications of Middle Cambrian boulders from the Haymond Formation (Pennsylvanian) in the Marathon basin, west Texas Allison R. Palmer; Allison R. Palmer 1Geological Society of America, Box 9140, Boulder, Colorado 80301 Search for other works by this author on: GSW Google Scholar William D. DeMis; William D. DeMis 2Pennzoil Exploration and Production Company, P.O. Drawer 1139, Denver, Colorado 80201 Search for other works by this author on: GSW Google Scholar William R. Muehlberger; William R. Muehlberger 3Department of Geological Sciences, University of Texas, Austin, Texas 78712 Search for other works by this author on: GSW Google Scholar Richard A. Robison Richard A. Robison 4Department of Geology, University of Kansas, Lawrence, Kansas 66045 Search for other works by this author on: GSW Google Scholar Author and Article Information Allison R. Palmer 1Geological Society of America, Box 9140, Boulder, Colorado 80301 William D. DeMis 2Pennzoil Exploration and Production Company, P.O. Drawer 1139, Denver, Colorado 80201 William R. Muehlberger 3Department of Geological Sciences, University of Texas, Austin, Texas 78712 Richard A. Robison 4Department of Geology, University of Kansas, Lawrence, Kansas 66045 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1984) 12 (2): 91–94. https://doi.org/10.1130/0091-7613(1984)12<91:GIOMCB>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 Permissions Search Site Citation Allison R. Palmer, William D. DeMis, William R. Muehlberger, Richard A. Robison; Geological implications of Middle Cambrian boulders from the Haymond Formation (Pennsylvanian) in the Marathon basin, west Texas. Geology 1984;; 12 (2): 91–94. doi: https://doi.org/10.1130/0091-7613(1984)12<91:GIOMCB>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 Fossiliferous Middle Cambrian boulders from a previously unknown boulder unit in the Haymond Formation of Pennsylvanian age in the southeastern part of the Marathon basin, Texas, contain trilobites, brachiopods, and mollusks indicative of the seaward margin of a late Middle Cambrian carbonate platform. The source area was to the southeast of present outcrops. Paleogeographic relocation of the source, about 100 to 200 km southeast of the present Marathon basin, provides the first clear evidence for the position of the seaward margin of the earliest Paleozoic carbonate platform along the southern sector of the United States. Metamorphic rocks of the "interior zone" of the late Paleozoic Ouachita orogen now lie well inboard of the seaward edge of the carbonate platform and are most likely allochthonous on a scale of tens of kilometres. 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.