Integrated stratigraphy across the Aptian/Albian boundary at Col de Pré-Guittard (southeast France): A candidate Global Boundary Stratotype Section |
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| Institution: | 1. Geological Institute, ETH Zürich, Sonneggstrasse 5, CH-8092 Zürich, Switzerland;2. Department of Stratigraphy and Palaeontology, University of the Basque Country, Sarriena s/n, 48940 Leioa, Spain;1. Ruhr-Universität Bochum, Institut für Geologie, Mineralogie und Geophysik, D-44870 Bochum, Germany;2. Geertekerkhof 14bis, 3511 XC Utrecht, The Netherlands;3. Petroleum Geosciences, The Petroleum Institute, PO Box 2533, Abu Dhabi, United Arab Emirates;1. School of Earth and Planetary Sciences, Curtin University, GPO Box U1987, Perth, WA 6845, Australia;2. Centre for Exploration Targeting – Curtin Node, Curtin University, GPO Box U1987, Perth, WA 6845, Australia;3. John de Laeter Centre, Curtin University, GPO Box U1987, Perth, WA 6845, Australia;4. Western Australian Argon Isotope Facility & JdL Centre, Curtin University, GPO Box U1987, Perth, WA 6845, Australia;5. Swedish Museum of Natural History, S-104 05 Stockholm, Sweden |
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| Abstract: | The outcrop of the Marnes Bleues at the Col de Pré-Guittard, 11 km north of the village of Rémuzat in the Départment of Drôme in southeastern France is probably the most intensively studied succession spanning the Aptian/Albian boundary interval. Following the rejection of the proposed GSSP for the base of the Albian Stage (based on the first occurrence of the ammonite Leymeriellla tardefurcata in the section at Le Pillart, Tartonne, Alpes-de-Haute Provence), we re-visit the Pré-Guittard section. A new candidate GSSP defined by the first occurrence of the planktonic foraminifera Microhedbergella renilaevis Huber and Leckie, 2011 is here proposed. This first occurrence is placed in a 100 m section with 28 secondary markers, including calcareous nannofossils, planktonic foraminifera, palynomorphs, an inoceramid bivalve, ammonites, stable carbon isotopes, and local marker beds. The outcrop fulfils most of the physical criteria required of a Global Stratotype Section and Point. |
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| Keywords: | Aptian-Albian GSSP SE France |
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