Reply to the comment of Talwani et al. (2017) on the Sibuet et al. (2016) paper entitled “Thinned continental crust intruded by volcanics beneath the northern Bay of Bengal”

International audience The northern Bay of Bengal velocity-depth profiles do not follow the velocity-depth curve for the North Atlantic volcanic margins, and only partially the Kerguelen plume velocity-depth curves. Compared with the South China Sea northern margin proxy, we still suggest that the B...

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Bibliographic Details
Published in:Marine and Petroleum Geology
Main Authors: Sibuet, Jean-Claude, Klingelhoefer, Frauke, Yeh, Yi-Ching, Rangin, Claude, Lee, Chao-Shing
Other Authors: Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Taiwan Ocean Research Institute, Géoazur (GEOAZUR 7329), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UniCA)-Université Côte d'Azur (UniCA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud ), Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement (CEREGE), Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Institute of Applied Geophysics, National Taiwan Ocean University
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2017
Subjects:
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences
Kerguelen
North Atlantic
Online Access:https://hal.science/hal-02132013
https://doi.org/10.1016/j.marpetgeo.2017.07.023
Description
Summary:International audience The northern Bay of Bengal velocity-depth profiles do not follow the velocity-depth curve for the North Atlantic volcanic margins, and only partially the Kerguelen plume velocity-depth curves. Compared with the South China Sea northern margin proxy, we still suggest that the Bay of Bengal crust is thinned continental crust intruded by post-rifting volcanics, as also shown by the interpretation of the numerous high-quality deep multichannel seismic profiles we collected there. What was supposed to be underplating might be sills intruded through the lower thinned continental crust.

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