Mud volcano growth by radial expansion: Examples from onshore Azerbaijan
| العنوان: | Mud volcano growth by radial expansion: Examples from onshore Azerbaijan |
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| المؤلفون: | Dominique Remy, Francis Odonne, Orhan R. Abbasov, Bruno C. Vendeville, Victoria Bichaud, Remy Juste, Maëlys Pain, Germinal Gabalda, Patrice Imbert, Adil A. Aliyev, Anthony Dofal, Mathieu Gertauda, Arthur Blouin, Matthieu Dupuis, Elnur E. Baloglanov |
| المساهمون: | Géosciences Environnement Toulouse (GET), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD), TOTAL-Scientific and Technical Center Jean Féger (CSTJF), TOTAL FINA ELF, Laboratoire des Fluides Complexes et leurs Réservoirs (LFCR), Centre National de la Recherche Scientifique (CNRS)-Université de Pau et des Pays de l'Adour (UPPA)-TOTAL FINA ELF, IFREMER, Unite Rech Geosci Marines, Lab Geophys & Enregistrements Sedimentaires, Plouzane, France., Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Centre scientifique et Technique Jean Feger (CSTJF), TOTAL FINA ELF-Université de Pau et des Pays de l'Adour (UPPA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Aléas géologiques et Dynamique sédimentaire (LAD), Géosciences Marines (GM), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) |
| المصدر: | Marine and Petroleum Geology Marine and Petroleum Geology, Elsevier, 2020, 112, pp.104051. ⟨10.1016/j.marpetgeo.2019.104051⟩ Marine and Petroleum Geology, 2020, 112, pp.104051. ⟨10.1016/j.marpetgeo.2019.104051⟩ Marine And Petroleum Geology (0264-8172) (Elsevier BV), 2020-02, Vol. 112, P. 104051 (22p.) |
| بيانات النشر: | HAL CCSD, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Azerbaijan, 010504 meteorology & atmospheric sciences, [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph], Stratigraphy, Direct observation, Soft mud, Flat-topped mud-volcanoes, Geology, Crust, 010502 geochemistry & geophysics, Oceanography, 01 natural sciences, Resistivity-gravity data, Low-density mud at depth, Geophysics, 13. Climate action, Growth of flat mud volcanoes, Economic Geology, Mudflows stacking, Petrology, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences, Mud volcano |
| الوصف: | We investigated the mode of growth of flat-topped mud volcanoes, through the study of three active edifices onshore Azerbaijan: they are the Bozdag-Guzdek, the Ayazakhtarma and the Akhtarma-Pashaly mud volcanoes. The three edifices are up to 80 m high and 3 km wide, and the recurrence time between eruptions from a few months to a few years. Surface changes during and between eruptions were documented by a combination of mapping from satellite pictures, repeated direct observation over five years and structural analysis. In addition, resistivity profiles and microgravity measurements were used to decipher their subsurface geometries. We interpret the flat-topped character of the mud volcanoes as the result of rapid “isostatic” readjustment of a brittle surface crust, < 1 m to tens of meters thick, overlying a ductile layer. The surface structure typically shows a concentric transition from an extensional regime in the vicinity of the emission center, to strike slip movements in a median ring, to a compressional regime with thrusts, and pop-up blocks or folds in the outer part of the plateau. Both the flat surface of these mud volcanoes and observed radial displacements of the surface, combined with the very low Bouguer anomaly of the Ayazakhtarma mud volcano, give arguments to propose that km-diameter, flat-topped mud volcanoes likely reflect the presence at a shallow depth (a few tens of meters?) of a large volume of soft mud. Rapid compaction at the surface forms a crust that moves away from a central feeding area, thereby transferring mud added at the center into lateral spreading, building a Coulomb prism all around the mud volcano and strongly limiting vertical buildup. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0264-8172 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::423236f01da36c3864b7269d42e7d6c5Test https://hal.archives-ouvertes.fr/hal-02898360Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....423236f01da36c3864b7269d42e7d6c5 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 02648172 |
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