Fossil Record 23(1): 33-69, doi: 10.5194/fr-23-33-2020
Aras Valley (northwest Iran): high-resolution stratigraphy of a continuous central Tethyan Permian–Triassic boundary section
expand article infoJana Gliwa‡, Abbas Ghaderi§, Lucyna Leda‡, Martin Schobben|, Sara Tomás, William J. Foster‡, Marie-Béatrice Forel#, Nahideh Ghanizadeh Tabrizi§, Stephen E. Grasby¤, Ulrich Struck«, Ali Reza Ashouri§, Dieter Korn‡
‡ Museum für Naturkunde Berlin, Leibniz Institute for Evolution and Biodiversity Science, Invalidenstraße 43, 10115 Berlin, Germany§ Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, P.O. Box 9177948974, Mashhad, Iran| Department of Earth Sciences, Utrecht University, Princetonlaan 8A, Utrecht, Netherlands¶ Institute of Earth & Environmental Sciences, University of Potsdam, Karl-Liebknecht-Straße 24–25, 14476 Potsdam, Germany# CR2P, Muséum national d'Histoire naturelle-Sorbonne Université-CNRS, 8 rue Buffon (CP38), 75005, Paris, France¤ Geological Survey of Canada – Calgary, 3303 33rd St. N.W., Calgary, Alberta, T2L 2A7, Canada« Department of Earth Sciences, Institute of Geological Sciences, Freie Universität Berlin, Malteserstraße 74–100, 12249 Berlin, Germany
© Jana Gliwa, Abbas Ghaderi, Lucyna Leda, Martin Schobben, Sara Tomás, William J. Foster, Marie-Béatrice Forel, Nahideh Ghanizadeh Tabrizi, Stephen E. Grasby, Ulrich Struck, Ali Reza Ashouri, Dieter Korn.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation: Gliwa J, Ghaderi A, Leda L, Schobben M, Tomás S, Foster WJ, Forel M-B, Ghanizadeh Tabrizi N, Grasby SE, Struck U, Ashouri AR, Korn D (2020) Aras Valley (northwest Iran): high-resolution stratigraphy of a continuous central Tethyan Permian–Triassic boundary section. Fossil Record 23(1): 33-69. https://doi.org/10.5194/fr-23-33-2020
Open Access
Abstract

The Permian–Triassic boundary section in the Aras Valley in NWIran is investigated with respect to carbonate microfacies, biostratigraphy(particularly conodonts, nautiloids, and ammonoids), chemostratigraphy(carbon isotopes), and environmental setting. Correlation of the data allowsthe establishment of a high-resolution stratigraphy based on conodonts (withfour Wuchiapingian, 10 Changhsingian, and three Griesbachian zones),ammonoids (with nine Changhsingian zones), and carbon isotopes; it formsthe base for the reconstruction of the environmental changes before andafter the end-Permian extinction event at the studied locality. In the ArasValley section, there is no evidence for the development of anoxicconditions, associated with the end-Permian mass extinction.