Journal
COMPTES RENDUS GEOSCIENCE
Volume 338, Issue 16, Pages 1240-1249Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.crte.2006.07.010
Keywords
bathymetry; imagery; volcanoes; hazards; Mayotte; Comoros
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The BATHYMAY marine survey was carried out in January 2004 around the French volcanic island of Mayotte, onboard the research vessel Marion Dufresne 2. Multibeam bathymetry revealed for the first time the morphology of the whole outer slope. Preliminary interpretations show broad canyons that deeply incise the slope, numerous volcanoes and huge landslides. Large submarine plateaus are also highlighted, bounded by steep cliffs and active normal faults. A model for Mayotte is suggested, in which eruptive activity, sometimes influenced by normal faulting, was concentrated along a N140 degrees regional line (the Comoros archipelago axis), with landslide activity concentrated on the northeastern and southwestern flanks of this line.
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