Aras Valley (northwest Iran): high-resolution stratigraphy of a continuous central Tethyan Permian–Triassic boundary section

J. Gliwa; A. Ghaderi; L. Leda; M. Schobben; S. Tomás; W. J. Foster; W. J. Foster; M.-B. Forel; N. Ghanizadeh Tabrizi; S. E. Grasby; U. Struck; A. R. Ashouri; D. Korn

doi:10.5194/fr-23-33-2020

Fossil Record (Feb 2020)

Aras Valley (northwest Iran): high-resolution stratigraphy of a continuous central Tethyan Permian–Triassic boundary section

J. Gliwa,
A. Ghaderi,
L. Leda,
M. Schobben,
S. Tomás,
W. J. Foster,
W. J. Foster,
M.-B. Forel,
N. Ghanizadeh Tabrizi,
S. E. Grasby,
U. Struck,
A. R. Ashouri,
D. Korn

Affiliations

J. Gliwa: Museum für Naturkunde Berlin, Leibniz Institute for Evolution and Biodiversity Science, Invalidenstraße 43, 10115 Berlin, Germany
A. Ghaderi: Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, P.O. Box 9177948974, Mashhad, I. R. Iran
L. Leda: Museum für Naturkunde Berlin, Leibniz Institute for Evolution and Biodiversity Science, Invalidenstraße 43, 10115 Berlin, Germany
M. Schobben: Department of Earth Sciences, Utrecht University, Princetonlaan 8A, Utrecht, the Netherlands
S. Tomás: Institute of Earth & Environmental Sciences, University of Potsdam, Karl-Liebknecht-Straße 24–25, 14476 Potsdam, Germany
W. J. Foster: Museum für Naturkunde Berlin, Leibniz Institute for Evolution and Biodiversity Science, Invalidenstraße 43, 10115 Berlin, Germany
W. J. Foster: School of Earth Sciences, Institute of Geosciences, University College Dublin, Belfield, Dublin 4, Ireland
M.-B. Forel: CR2P, Muséum national d'Histoire naturelle-Sorbonne Université-CNRS, 8 rue Buffon (CP38), 75005, Paris, France
N. Ghanizadeh Tabrizi: Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, P.O. Box 9177948974, Mashhad, I. R. Iran
S. E. Grasby: Geological Survey of Canada – Calgary, 3303 33rd St. N.W., Calgary, Alberta, T2L 2A7, Canada
U. Struck: Museum für Naturkunde Berlin, Leibniz Institute for Evolution and Biodiversity Science, Invalidenstraße 43, 10115 Berlin, Germany
A. R. Ashouri: Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, P.O. Box 9177948974, Mashhad, I. R. Iran
D. Korn: Museum für Naturkunde Berlin, Leibniz Institute for Evolution and Biodiversity Science, Invalidenstraße 43, 10115 Berlin, Germany

DOI: https://doi.org/10.5194/fr-23-33-2020
Journal volume & issue: Vol. 23
pp. 33 – 69

Abstract

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

Published in Fossil Record

ISSN: 2193-0066 (Print); 2193-0074 (Online)
Publisher: Pensoft Publishers
Country of publisher: Germany
LCC subjects: Science: Geology: Paleontology
Website: https://fr.pensoft.net/

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