Numerical calibration of the Devonian-Carboniferous boundary: Two new U-Pb isotope dilution–thermal ionization mass spectrometry single-zircon ages from Hasselbachtal (Sauerland, Germany)
2004-01-01

Research Article| October 01, 2004 Numerical calibration of the Devonian-Carboniferous boundary: Two new U-Pb isotope dilution–thermal ionization mass spectrometry single-zircon ages from Hasselbachtal (Sauerland, Germany) Endres Trapp; Endres Trapp 1Zentrallabor für Geochronologie, Institut für Mineralogie, Universität Münster, Corrensstrasse 24, 48149 Münster, Germany Search for other works by this author on: GSW Google Scholar Bernd Kaufmann; Bernd Kaufmann 2Institut für Geowissenschaften, Universität Tübingen, Sigwartstrasse 10, 72076 Tübingen, Germany Search for other works by this author on: GSW Google Scholar Klaus Mezger; Klaus Mezger 3Zentrallabor für Geochronologie, Institut für Mineralogie, Universität Münster, Corrensstrasse 24, 48149 Münster, Germany Search for other works by this author on: GSW Google Scholar Dieter Korn; Dieter Korn 4Museum für Naturkunde, Humboldt-Universität, Invalidenstrasse 43, 10115 Berlin, Germany Search for other works by this author on: GSW Google Scholar Dieter Weyer Dieter Weyer 5Löwestrasse 15, 10249 Berlin, Germany Search for other works by this author on: GSW Google Scholar Author and Article Information Endres Trapp 1Zentrallabor für Geochronologie, Institut für Mineralogie, Universität Münster, Corrensstrasse 24, 48149 Münster, Germany Bernd Kaufmann 2Institut für Geowissenschaften, Universität Tübingen, Sigwartstrasse 10, 72076 Tübingen, Germany Klaus Mezger 3Zentrallabor für Geochronologie, Institut für Mineralogie, Universität Münster, Corrensstrasse 24, 48149 Münster, Germany Dieter Korn 4Museum für Naturkunde, Humboldt-Universität, Invalidenstrasse 43, 10115 Berlin, Germany Dieter Weyer 5Löwestrasse 15, 10249 Berlin, Germany Publisher: Geological Society of America Received: 15 Mar 2004 Revision Received: 06 Jul 2004 Accepted: 07 Jul 2004 First Online: 02 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2004) 32 (10): 857–860. https://doi.org/10.1130/G20644.1 Article history Received: 15 Mar 2004 Revision Received: 06 Jul 2004 Accepted: 07 Jul 2004 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 Endres Trapp, Bernd Kaufmann, Klaus Mezger, Dieter Korn, Dieter Weyer; Numerical calibration of the Devonian-Carboniferous boundary: Two new U-Pb isotope dilution–thermal ionization mass spectrometry single-zircon ages from Hasselbachtal (Sauerland, Germany). Geology 2004;; 32 (10): 857–860. doi: https://doi.org/10.1130/G20644.1 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 The Hasselbachtal section (Sauerland, Germany) is an auxiliary global stratotype of the Devonian-Carboniferous boundary and one of the most important reference sections for the evolution of the latest Famennian to earliest Tournaisian pelagic fauna. Biostratigraphically well controlled altered volcanic ash layers (metabentonites) intercalated in the section afford a perfect opportunity for a numerical fixing of this important Paleozoic period boundary. We have performed U-Pb isotope dilution–thermal ionization mass spectrometry (ID-TIMS) analyses on (sub)microgram-sized single zircons and zircon fragments extracted from two metabentonites (beds 79 and 70) in the lowermost Tournaisian part of the section. Bed 79 metabentonite is positioned directly above the Devonian-Carboniferous boundary within the Siphonodella sulcata conodont zone. Five concordant analyses form a cluster with a 206Pb/238U concordia age of 360.5 ± 0.8 Ma. Zircons of the next younger metabentonite (bed 70), in the lower Siphonodella duplicata conodont zone, yielded a tightly grouped cluster of 10 concordant analyses with a 206Pb/238U concordia age of 360.2 ± 0.7 Ma. On the basis of these two new single-zircon ages and previously published late Famennian U-Pb ID-TIMS ages, the Devonian-Carboniferous boundary is reinterpolated herein to 360.7 ± 0.7 Ma. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.