Mostrar el registro sencillo del ítem
Volcanism and tectonics unveiled in the Comoros Archipelago between Africa and Madagascar
dc.rights.license | open | en_US |
dc.contributor.author | THINON, Isabelle | |
dc.contributor.author | LEMOINE, Anne | |
dc.contributor.author | LEROY, Sylvie | |
dc.contributor.author | PAQUET, Fabien | |
dc.contributor.author | BERTHOD, Carole | |
hal.structure.identifier | Environnements et Paléoenvironnements OCéaniques [EPOC] | |
dc.contributor.author | ZARAGOSI, Sebastien | |
dc.contributor.author | FAMIN, Vincent | |
dc.contributor.author | FEUILLET, Nathalie | |
dc.contributor.author | BOYMOND, Pierre | |
dc.contributor.author | MASQUELET, Charles | |
dc.contributor.author | MERCURY, Nicolas | |
dc.contributor.author | RUSQUET, Anais | |
dc.contributor.author | SCALABRIN, Carla | |
dc.contributor.author | WOERD, Jerome Van Der | |
dc.contributor.author | BERNARD, Julien | |
hal.structure.identifier | Environnements et Paléoenvironnements OCéaniques [EPOC] | |
dc.contributor.author | BIGNON, Julie | |
dc.contributor.author | CLOUARD, Valerie | |
dc.contributor.author | DOUBRE, Cecile | |
dc.contributor.author | JACQUES, Eric | |
dc.contributor.author | JORRY, Stephan J. | |
dc.contributor.author | ROLANDONE, Frederique | |
dc.contributor.author | CHAMOT-ROOKE, Nicolas | |
dc.contributor.author | DELESCLUSE, Matthias | |
dc.contributor.author | FRANKE, Dieter | |
dc.contributor.author | WATREMEZ, Louise | |
dc.contributor.author | BACHELERY, Patrick | |
dc.contributor.author | MICHON, Laurent | |
dc.contributor.author | SAUTER, Daniel | |
hal.structure.identifier | Environnements et Paléoenvironnements OCéaniques [EPOC] | |
dc.contributor.author | BUJAN, Stephane | |
dc.contributor.author | CANVA, Albane | |
hal.structure.identifier | Environnements et Paléoenvironnements OCéaniques [EPOC] | |
dc.contributor.author | DASSIE, Emilie | |
dc.contributor.author | ROCHE, Vincent | |
dc.contributor.author | ALI, Said | |
dc.contributor.author | ALLAOUIA, Abdoul Hamid Sitti | |
dc.contributor.author | DEPLUS, Christine | |
dc.contributor.author | RAD, Setareh | |
dc.contributor.author | SADESKI, Ludivine | |
dc.date.accessioned | 2023-11-07T10:52:26Z | |
dc.date.available | 2023-11-07T10:52:26Z | |
dc.date.issued | 2022 | |
dc.identifier.issn | 1778-7025 | en_US |
dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/184657 | |
dc.description.abstract | Des données géophysiques et géologiques ont été acquises lors de la campagne océanographique SISMAORE (2020–2021). Deux grands champs tectono-volcaniques sous-marins ont été découverts tout le long et principalement au nord de l’archipel des Comores : la province N’Droundé orientée N160°E au nord de Grande-Comore, et la province Mwezi orientée N130°E au nord d’Anjouan-Mayotte où des roches basaltiques de type popping-rocks suggèrent une activité volcanique possiblement actuelle à pléistocène. La géométrie et la distribution des structures récentes sont cohérentes avec un contexte régional actuel transtensif dextre. Leurs orientations évoluent d’Ouest en Est (N160°E, N130°E, EW), suggérant pour la partie occidentale, une mise en place du volcanisme influencée par la structuration crustale préexistante. Le corridor tectono-volcanique de 200 km de large et de 600 km de long dessine une limite de plaque lithosphérique Somalie-Lwandle immature en décrochante dextre entre le système du rift est-africain et Madagascar. | |
dc.description.abstractEn | Geophysical and geological data from the North Mozambique Channel acquired during the 2020–2021 SISMAORE oceanographic cruise reveal a corridor of recent volcanic and tectonic features 200 km wide and 600 km long within and north of Comoros Archipelago. Here we identify and describe two major submarine tectono-volcanic fields: the N’Droundé province oriented N160°E north of Grande-Comore Island, and the Mwezi province oriented N130°E north of Anjouan and Mayotte Islands. The presence of popping basaltic rocks sampled in the Mwezi province suggests post-Pleistocene volcanic activity. The geometry and distribution of recent structures observed on the seafloor are consistent with a current regional dextral transtensional context. Their orientations change progressively from west to east (N160°E, N130°E, EW). The volcanism in the western part appears to be influenced by the pre-existing structural fabric of the Mesozoic crust. The 200 km-wide and 600 km-long tectono-volcanic corridor underlines the incipient Somalia–Lwandle dextral lithospheric plate boundary between the East-African Rift System and Madagascar. | |
dc.description.sponsorship | COmores & maYotte : vOlcanisme, TEctonique et Sismicité | en_US |
dc.language.iso | EN | en_US |
dc.rights | Attribution 3.0 United States | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/us/ | * |
dc.subject | Province volcanique | |
dc.subject | Tectonique active | |
dc.subject | Frontière de plaque naissante | |
dc.subject | Bathymétrie | |
dc.subject | Rétrodiffusion | |
dc.subject | Canal du Mozambique Nord | |
dc.subject | Archipel des Comores | |
dc.subject.en | Volcanic province | |
dc.subject.en | Active tectonics | |
dc.subject.en | Incipient plate boundary | |
dc.subject.en | Bathymetry | |
dc.subject.en | Backscatter | |
dc.subject.en | Northern Mozambique Channel | |
dc.subject.en | Comoros Archipelago | |
dc.title.en | Volcanism and tectonics unveiled in the Comoros Archipelago between Africa and Madagascar | |
dc.type | Article de revue | en_US |
dc.identifier.doi | 10.5802/crgeos.159 | en_US |
dc.subject.hal | Sciences de l'environnement | en_US |
bordeaux.journal | Comptes Rendus. Géoscience | en_US |
bordeaux.page | 7-34 | en_US |
bordeaux.volume | 354 | en_US |
bordeaux.hal.laboratories | EPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805 | en_US |
bordeaux.issue | S2 | en_US |
bordeaux.institution | Université de Bordeaux | en_US |
bordeaux.institution | CNRS | en_US |
bordeaux.team | PALEO | en_US |
bordeaux.team | EA | en_US |
bordeaux.peerReviewed | oui | en_US |
bordeaux.inpress | non | en_US |
hal.popular | non | en_US |
hal.audience | Internationale | en_US |
hal.export | false | |
dc.rights.cc | CC BY | en_US |
bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Comptes%20Rendus.%20G%C3%A9oscience&rft.date=2022&rft.volume=354&rft.issue=S2&rft.spage=7-34&rft.epage=7-34&rft.eissn=1778-7025&rft.issn=1778-7025&rft.au=THINON,%20Isabelle&LEMOINE,%20Anne&LEROY,%20Sylvie&PAQUET,%20Fabien&BERTHOD,%20Carole&rft.genre=article |