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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'
- Source :
- Marine and Petroleum Geology, Marine and Petroleum Geology, Elsevier, 2017, 88, pp.1126-1129. ⟨10.1016/j.marpetgeo.2017.07.023⟩, Marine and Petroleum Geology, 2017, 88, pp.1126-1129. ⟨10.1016/j.marpetgeo.2017.07.023⟩, Marine And Petroleum Geology (0264-8172) (Elsevier Sci Ltd), 2017-12, Vol. 88, P. 1126-1129
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- The northern Bay of Bengal velocity-depth profiles do not follow the velocity-depth curve of the North Atlantic volcanic margins, and only partially the Kerguelen velocity-depth curves. Deep seismic refraction and reflection profiles acquired across the Hatton bank and Feroes ridge show that the melt is intruded into the lower thinned continental crust as sills, which cross-cut the continental fabric rather than underplating as it was often assumed in the past. Compared with the SCS northern margin proxy, we still suggest that the BoB crust is thinned continental crust intruded by post-rifting volcanics, as also shown by the interpretation of the numerous high-quality deep MCS profiles we collected there. What was supposed to be underplating might be sills intruded through the lower thinned continental crust.
- Subjects :
- 010504 meteorology & atmospheric sciences
Stratigraphy
Geochemistry
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences
010502 geochemistry & geophysics
Oceanography
01 natural sciences
volcanics
Continental margin
Sill
Thinned continental crust intruded by
Northern Bay of Bengal
14. Life underwater
Geomorphology
0105 earth and related environmental sciences
geography
Underplating
geography.geographical_feature_category
Continental crust
Geology
Crust
Volcanic rock
Geophysics
BENGAL
Economic Geology
Bay
Wide-angle and reflection seismic profiles
Multichannel seismic profiles
Subjects
Details
- ISSN :
- 02648172
- Volume :
- 88
- Database :
- OpenAIRE
- Journal :
- Marine and Petroleum Geology
- Accession number :
- edsair.doi.dedup.....691c44d4b651dae553f963cae53d59e0