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Université de Provence - Aix-Marseille I Hyper Articles en Ligne |
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Université de Provence - Aix-Marseille I Hyper Articles en Ligne |
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| HAL : hal-00420909, version 1 |
| DOI : 10.1029/2008TC002444 |
| Fiche détaillée |  Récupérer au format |
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| Tectonics 28 (2009) TC5002 |
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| New tectonic configuration in NE Iran: Active strike-slip faulting between the Kopeh Dagh and Binalud mountains |
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| Esmaeil Shabanian 1Olivier Bellier 1 |
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| (2009) |
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| In this paper, a combined approach of geomorphic analyses, detailed geological mapping on SPOT 5 satellite images and field surveys, complemented by radiometric dating (Ar-40/Ar-39) allows proposing a new and consistent tectonic configuration for the northeastern Arabia-Eurasia collision zone. It favors a simple strike-slip faulting mechanism in NE Iran accommodating the northward motion of central Iran with respect to Eurasia between the Binalud and Kopeh Dagh mountains. Our results demonstrate that similar to 2 mm/a (similar to 25%) of this northward motion has been transferred from the Binalud to the Kopeh Dagh through the Meshkan Transfer Zone since similar to 5 Ma. The modern state of stress deduced from fault kinematics analyses shows N30 degrees E trending maximum stress axis and confirms a dominant strike-slip faulting mechanism. Combining our geological data with other available data, we conclude that kinematics of deformation can be appropriately described by rigid block faulting in NE Iran; instead, the continuous deformation as it has been thought during the last 3 decades. |
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| 1 : | Centre européen de recherche et d'enseignement de géosciences de l'environnement (CEREGE) |
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CNRS : UMR6635 – Institut de recherche pour le développement [IRD] – INSU – Université de Provence - Aix-Marseille I – Université Paul Cézanne - Aix-Marseille III |
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| 2 : | Géosciences Montpellier (GM) |
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CNRS : UMR5243 – Université Montpellier II - Sciences et techniques |
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| 3 : | International Institute of Earthquake Engineering and Seismology, Tehran |
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| Domaine | : | Planète et Univers/Sciences de la Terre/Géochimie Sciences de l'environnement/Milieux et Changements globaux |
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| Kopeh Dagh – strike-slip faulting – morphotectonics |
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| hal-00420909, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00420909 | |
| oai:hal.archives-ouvertes.fr:hal-00420909 | |
| Contributeur : Gm Aigle | |
| Déposé pour le compte de : | |
| Soumis le : Mercredi 30 Septembre 2009, 10:19:37 | |
| Dernière modification le : Mercredi 30 Septembre 2009, 10:19:38 | |
