Global extinction event in benthic foraminifera across the Paleocene/Eocene boundary at the Dababiya Stratotype section

Abstract

Research Article| December 01, 2006 Global extinction event in benthic foraminifera across the Paleocene/Eocene boundary at the Dababiya Stratotype section Laia Alegret; Laia Alegret Departamento de Ciencias de la Tierra, Universidad de Zaragoza, 50009 Zaragoza, Spain email: [e-mail] Search for other works by this author on: GSW Google Scholar Silvia Ortiz Silvia Ortiz Departamento de Ciencias de la Tierra, Universidad de Zaragoza, 50009 Zaragoza, Spain email: [e-mail] Search for other works by this author on: GSW Google Scholar Author and Article Information Laia Alegret Departamento de Ciencias de la Tierra, Universidad de Zaragoza, 50009 Zaragoza, Spain email: [e-mail] Silvia Ortiz Departamento de Ciencias de la Tierra, Universidad de Zaragoza, 50009 Zaragoza, Spain email: [e-mail] Publisher: Micropaleontology Press Received: 09 Jun 2006 Accepted: 06 Dec 2006 First Online: 06 Mar 2017 Online ISSN: 0026-2803 Print ISSN: 1937-2795 © 2006 The Micropaleontology Project, Inc. Micropaleontology (2006) 52 (5): 433–447. https://doi.org/10.2113/gsmicropal.52.5.433 Article history Received: 09 Jun 2006 Accepted: 06 Dec 2006 First Online: 06 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Laia Alegret, Silvia Ortiz; Global extinction event in benthic foraminifera across the Paleocene/Eocene boundary at the Dababiya Stratotype section. Micropaleontology 2006;; 52 (5): 433–447. doi: https://doi.org/10.2113/gsmicropal.52.5.433 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 SocietyMicropaleontology Search Advanced Search Abstract A global extinction event of deep-sea benthic foraminifera occurred at the Paleocene/Eocene (P/E) boundary, coeval with a period of rapid global warming (Initial Eocene Thermal Maximum; IETM) and a negative excursion in marine and terrestrial δ13C values (Carbon Isotope Excursion; CIE). Benthic foraminifera from marginal and epicontinental basins show lesser extinctions and/or temporary assemblage changes. Detailed taxonomical and quantitative analysis of the benthic foraminiferal assemblages and of the paleoenvironmental turnover across the P/E boundary in the outer neritic Dababiya section (Egypt), the Global Stratotype Section and Point (GSSP) for the P/E boundary, is of great importance for correlation with other P/E boundary sites. We illustrate the 46 most representative benthic foraminiferal taxa (belonging to 27 genera) in order to compare the taxonomy of species described in Egypt with that of species described from other sections worldwide.Angulogavelinella avnimelechi had its uppermost occurrence at the base of the CIE, and its extinction may be correlated to the main phase of extinction of benthic foraminifera (Benthic Foraminiferal Extinction Event, BEE) in the deep sea. At the same level, the species richness and diversity decreased, and the relative abundance of non-calcareous agglutinated foraminifera increased dramatically, probably related to intense dissolution as seen in the lithology. However, dissolution of carbonate was not complete through the whole CIE at Dababiya, and thus may not have been the only cause of the foraminiferal turnover. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.