Abstract
Research Article| September 01, 1943 Pre-Cretaceous of Colombia D. TRUMPY D. TRUMPY Search for other works by this author on: GSW Google Scholar Author and Article Information D. TRUMPY Publisher: Geological Society of America Received: 07 Jul 1942 First Online: 02 Mar 2017 Online Issn: 1943-2674 Print Issn: 0016-7606 © 1943 Geological Society of America GSA Bulletin (1943) 54 (9): 1281–1304. https://doi.org/10.1130/GSAB-54-1281 Article history Received: 07 Jul 1942 First Online: 02 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 D. TRUMPY; Pre-Cretaceous of Colombia. GSA Bulletin 1943;; 54 (9): 1281–1304. doi: https://doi.org/10.1130/GSAB-54-1281 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 Drs. O. Renz, H. Hubach, and A. Gansser, geologists of the Cia. de Petroleo Shell de Colombia, have collected several small faunas of Paleozoic and Early Mesozoic age during the past few years. Some of these faunas are new, while the others give additional information on the distribution of the pre-Cretaceous formations in Colombia.The basement rocks of the Macarena are briefly described. Cambro-Ordovician graptolite and trilobite faunules were found in the Macarenas and near Colombia, a small village about 80 kilometers northeast of Neiva. On the Colombian side of the Sierra de Perija, Devonian beds with a Floresta fauna overlap with sharp, angular unconformity upon slightly metamorphosed shale. Small Carboniferous faunas were collected on Cerro Cerrejón in the Rancheria valley, at Bucaramanga, and at Labateca. A good Leonard fauna was found near Manaure in the Sierra de Perija, and boulders of Permian Fusulina limestones occur in red beds near Chiriguaná. Marine Upper Triassic limestones are normally interbedded with porphyritic red beds at Payande near Ibague. Probably also of Upper Triassic age are black shales with Estheria exposed on the road between Duitama and Charala and in Quebrada de los Indios about 25 kilometers south of Fundación.Black shales and limestones underlying red beds and porphyrites have recently furnished ammonites of Lower Liassic age at a locality on Laguna Morrocoyal southwest of El Banco. Some granites and porphyrites of the Cordillera Central are post-Liassic. 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.
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