Tectonics of the Pliocene Homs basalts (Syria) and implications for the Dead Sea Fault Zone activity
| Autor: | Jean Chorowicz, Osama Ammar, Ahmad Bilal, Damien Dhont, Mohamad Rukieh |
|---|---|
| Přispěvatelé: | Laboratoire de tectonique (LT), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), Queyroy, Marie José, Centre National de la Recherche Scientifique (CNRS)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC) |
| Rok vydání: | 2005 |
| Předmět: |
010504 meteorology & atmospheric sciences
[SDU.STU.TE] Sciences of the Universe [physics]/Earth Sciences/Tectonics Fault (geology) 010502 geochemistry & geophysics 01 natural sciences African Plate remote sensing Paleontology pull-apart structure Dead sea fault zone Lebanon 0105 earth and related environmental sciences [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics geography geography.geographical_feature_category Syria Transform fault Geology Strike-slip tectonics Volcanic rock Tectonics Plate tectonics 13. Climate action Seismology Mylonite |
| Zdroj: | Journal of the Geological Society Journal of the Geological Society, 2005, 162, pp.259-271 Journal of the Geological Society, Geological Society of London, 2005, 162, pp.259-271 |
| ISSN: | 2041-479X 0016-7649 |
| DOI: | 10.1144/0016-764904-037 |
| Popis: | Timing of activity along the Yammuneh segment (Lebanon–Syria) of the Dead Sea Fault Zone and its northward continuation is still a subject of controversy. Our field structural analysis and observations on radar, Landsat and digital elevation model imagery of the Homs region (Syria) are of concern for Plio-Quaternary tectonics of the whole northern part of the Dead Sea Fault Zone. We show in this paper that the northern Dead Sea Fault Zone has remained active since the onset of the Homs basalts at c . 6 Ma. Continuing movement in Recent times is indicated by the occurrence of Quaternary pull-apart structures and offset of active ravines along the fault. The Homs basalts are related to the distinct oval-shaped Shin volcanic edifice, of which the long axis trends NW. The volcano was fed through NW-striking tension fractures, which now form dykes and volcanic ridges. These patterns are consistent with a NE–SW extension that occurred c . 6 Ma ago. The northwestern end of the Shin volcano is left-laterally displaced c . 20 km, yielding a c . 3.3 mm a −1 mean rate of relative movement between the Arabian and African plates. In the northern part of the Dead Sea Fault Zone, the overall trace of the main active Dead Sea Fault Zone is not a single transform but forms an irregular plate boundary composed of transform fault and collision belt segments. Fine-grained mylonite developed in the fault corridor may have favoured aseismic deformation in the Shin volcano area. |
| Databáze: | OpenAIRE |
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