| Titre | Aras Valley (northwest Iran): high-resolution stratigraphy of a continuous central Tethyan Permian-Triassic boundary section |
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| Auteur | Gliwa, J; Ghaderi, A; Leda, L; Schobben, M; Tomas, S; Foster, W J; Forel, M B; Tabrizi, N G; Grasby, S E ; Struck, U; Ashouri, A R; Korn, D |
| Source | Fossil Record vol. 23, 1, 2020 p. 33-69, https://doi.org/10.5194/fr-23-33-2020  Accès ouvert |
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| Année | 2020 |
| Séries alt. | Ressources naturelles Canada, Contribution externe 20200191 |
| Éditeur | Copernicus Gesellschaft Mbh |
| Document | publication en série |
| Lang. | anglais |
| DOI | https://doi.org/10.5194/fr-23-33-2020 |
| Media | papier; en ligne; numérique |
| Formats | pdf |
| Région | Aras Valley |
| Lat/Long OENS | 45.4344 45.4347 39.0156 39.0153 |
| Sujets | analyses stratigraphiques; biostratigraphie; carbonate; microfaciès; conodontes; isotopes de carbone; etudes de l'environnement; géologie de l'environnement; Sciences et technologie; Nature et
environnement; stratigraphie; Permien; Trias |
| Illustrations | cartes de localisation; photographies; profils stratigraphiques; coupes; tableaux |
| Diffusé | 2020 02 21 |
| Résumé | (disponible en anglais seulement)
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. |
| GEOSCAN ID | 326603 |
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