Articles | Volume 23, issue 1
https://doi.org/10.5194/fr-23-33-2020
© Author(s) 2020. This work is distributed under
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the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/fr-23-33-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
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21 Feb 2020
Research article | Highlight paper |
| 21 Feb 2020
| 21 Feb 2020
Aras Valley (northwest Iran): high-resolution stratigraphy of a continuous central Tethyan Permian–Triassic boundary section
Jana Gliwa
CORRESPONDING AUTHOR
Museum für Naturkunde Berlin, Leibniz Institute for Evolution and
Biodiversity Science, Invalidenstraße 43, 10115 Berlin, Germany
Abbas Ghaderi
Department of Geology, Faculty of Science, Ferdowsi University of
Mashhad, P.O. Box 9177948974, Mashhad, I. R. Iran
Lucyna Leda
Museum für Naturkunde Berlin, Leibniz Institute for Evolution and
Biodiversity Science, Invalidenstraße 43, 10115 Berlin, Germany
Martin Schobben
Department of Earth Sciences, Utrecht University, Princetonlaan 8A,
Utrecht, the Netherlands
Sara Tomás
Institute of Earth & Environmental Sciences, University of Potsdam,
Karl-Liebknecht-Straße 24–25, 14476 Potsdam, Germany
William J. Foster
Museum für Naturkunde Berlin, Leibniz Institute for Evolution and
Biodiversity Science, Invalidenstraße 43, 10115 Berlin, Germany
School of Earth Sciences, Institute of Geosciences, University College Dublin, Belfield, Dublin
4, Ireland
Marie-Béatrice Forel
CR2P, Muséum national d'Histoire naturelle-Sorbonne
Université-CNRS, 8 rue Buffon (CP38), 75005, Paris, France
Nahideh Ghanizadeh Tabrizi
Department of Geology, Faculty of Science, Ferdowsi University of
Mashhad, P.O. Box 9177948974, Mashhad, I. R. Iran
Stephen E. Grasby
Geological Survey of Canada – Calgary, 3303 33rd St. N.W., Calgary,
Alberta, T2L 2A7, Canada
Ulrich Struck
Museum für Naturkunde Berlin, Leibniz Institute for Evolution and
Biodiversity Science, Invalidenstraße 43, 10115 Berlin, Germany
Ali Reza Ashouri
Department of Geology, Faculty of Science, Ferdowsi University of
Mashhad, P.O. Box 9177948974, Mashhad, I. R. Iran
Dieter Korn
Museum für Naturkunde Berlin, Leibniz Institute for Evolution and
Biodiversity Science, Invalidenstraße 43, 10115 Berlin, Germany
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Baghuk Mountain (Central Iran): high-resolution stratigraphy of a continuous Central Tethyan Permian–Triassic boundary section
Rostrum size differences between Toarcian belemnite battlefields
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Permian–Triassic boundary sections at Baghuk Mountain are investigated with respect to their lithological succession, biostratigraphy and chemostratigraphy. Ammonoids enable the clear separation of Wuchiapingian, Changhsingian and Dienerian assemblages. Early Triassic microbialites occur in various horizons. The carbon isotope curve shows a late Changhsingian negative excursion and the lightest values at the base of the Triassic.
Patrícia Rita, Kenneth De Baets, and Martina Schlott
Foss. Rec., 21, 171–182, https://doi.org/10.5194/fr-21-171-2018, https://doi.org/10.5194/fr-21-171-2018, 2018
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With the support of CT data, a morphometric analysis was performed with the aim of investigating the rostrum size differences between two Toarcian belemnite accumulations. A decrease in size from the Early Toarcian to the Middle Toarcian is recognized. It is also demonstrated that diameter-based measurements or maximum preserved length are not reliable proxies for rostrum size, and therefore apical length or three-dimensional approximations are more advisable.
F. Heuer, D. Korn, Z. Belka, and V. Hairapetian
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The Devonian reef limestone complex of Rösenbeck near Brilon (Rhenish Mountains) shows numerous neptunian dykes and other hollows which have been filled with Carboniferous siliciclastic as well as fossil-rich carbonate sediments with ammonoids, conodonts, and chondrichthyan fish. These carbonates represent erratic blocks of sediments which were deposited in elevated areas but subsequently eroded and transported as erratic blocks into the karstic cavities.
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Short summary
The Permian–Triassic boundary section of the Aras Valley (NW Iran) shows a complete sedimentary succession, bearing great potential for studying the change of environmental conditions that paralleled the end-Permian mass extinction. The lithological succession; carbonate microfacies characteristics; stable isotope dynamics; and conodont, ostracod, and ammonoid stratigraphy allow for a detailed study of the chronological succession of the events.
The Permian–Triassic boundary section of the Aras Valley (NW Iran) shows a complete sedimentary...
