Structure and rifting evolution of the northern Newfoundland Basin from Erable multichannel seismic reflection profiles across the southeastern margin of Flemish Cap
We present the results from processing and interpreting five lines from the 1992 Erable multichannel seismic reflection experiment extending from the southeastern margin of Flemish Cap into the northern Newfoundland Basin. These profiles reveal significant along strike variations in the rifting styl...
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Wiley-blackwell Publishing, Inc
2010
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ftarchimer:oai:archimer.ifremer.fr:11202 2023-07-30T04:05:02+02:00 Structure and rifting evolution of the northern Newfoundland Basin from Erable multichannel seismic reflection profiles across the southeastern margin of Flemish Cap Welford, J. K. Smith, J. A. Hall, J. Deemer, S. Srivastava, S. P. Sibuet, Jean-claude 2010-03 application/pdf https://archimer.ifremer.fr/doc/00001/11202/7876.pdf https://archimer.ifremer.fr/doc/00001/11202/7877.pdf https://doi.org/10.1111/j.1365-246X.2009.04477.x https://archimer.ifremer.fr/doc/00001/11202/ eng eng Wiley-blackwell Publishing, Inc https://archimer.ifremer.fr/doc/00001/11202/7876.pdf https://archimer.ifremer.fr/doc/00001/11202/7877.pdf doi:10.1111/j.1365-246X.2009.04477.x https://archimer.ifremer.fr/doc/00001/11202/ 2010 RAS info:eu-repo/semantics/openAccess restricted use Geophysical Journal International (0956-540X) (Wiley-blackwell Publishing, Inc), 2010-03 , Vol. 180 , N. 3 , P. 976-U4 Controlled source seismology Submarine tectonics and volcanism Continental margins: divergent Continental tectonics: extensional Crustal structure Atlantic Ocean text Article info:eu-repo/semantics/article 2010 ftarchimer https://doi.org/10.1111/j.1365-246X.2009.04477.x 2023-07-18T22:51:10Z We present the results from processing and interpreting five lines from the 1992 Erable multichannel seismic reflection experiment extending from the southeastern margin of Flemish Cap into the northern Newfoundland Basin. These profiles reveal significant along strike variations in the rifting styles experienced by Flemish Cap. In the southwest, a 100-km-wide transition zone is identified between thinned continental crust and thin oceanic crust. Similar to the conjugate Galicia Bank and Iberian margins, this transition zone contains a section of deep basement adjacent to a series of shallower ridges and is interpreted as exhumed serpentinized mantle. Along strike towards the northeast, this transition zone pinches out completely within 100 km and is replaced by thin oceanic crust directly adjacent to thinned continental crust. By interpreting nearby seismic profiles and profiles on the conjugate margins using the same classification criteria, we construct regional maps of the distribution of crustal domains on both sides of the North Atlantic. These maps reveal significant variations in rifting style on the conjugate margins and along strike of each margin and also highlight the role of ancient transfer zones in compartmentalizing these rifting variations into four distinct regions. We propose that the limited localization of shallow topographically high serpentinized peridotite ridges on the Newfoundland-Iberia and Flemish Cap-Galicia Bank conjugate margins, was directly related to an increase in the rate of extension following the separation of Flemish Cap and Galicia Bank which exhumed deeper, less serpentinized mantle. Article in Journal/Newspaper Newfoundland North Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Geophysical Journal International 180 3 976 998 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Controlled source seismology Submarine tectonics and volcanism Continental margins: divergent Continental tectonics: extensional Crustal structure Atlantic Ocean |
spellingShingle |
Controlled source seismology Submarine tectonics and volcanism Continental margins: divergent Continental tectonics: extensional Crustal structure Atlantic Ocean Welford, J. K. Smith, J. A. Hall, J. Deemer, S. Srivastava, S. P. Sibuet, Jean-claude Structure and rifting evolution of the northern Newfoundland Basin from Erable multichannel seismic reflection profiles across the southeastern margin of Flemish Cap |
topic_facet |
Controlled source seismology Submarine tectonics and volcanism Continental margins: divergent Continental tectonics: extensional Crustal structure Atlantic Ocean |
description |
We present the results from processing and interpreting five lines from the 1992 Erable multichannel seismic reflection experiment extending from the southeastern margin of Flemish Cap into the northern Newfoundland Basin. These profiles reveal significant along strike variations in the rifting styles experienced by Flemish Cap. In the southwest, a 100-km-wide transition zone is identified between thinned continental crust and thin oceanic crust. Similar to the conjugate Galicia Bank and Iberian margins, this transition zone contains a section of deep basement adjacent to a series of shallower ridges and is interpreted as exhumed serpentinized mantle. Along strike towards the northeast, this transition zone pinches out completely within 100 km and is replaced by thin oceanic crust directly adjacent to thinned continental crust. By interpreting nearby seismic profiles and profiles on the conjugate margins using the same classification criteria, we construct regional maps of the distribution of crustal domains on both sides of the North Atlantic. These maps reveal significant variations in rifting style on the conjugate margins and along strike of each margin and also highlight the role of ancient transfer zones in compartmentalizing these rifting variations into four distinct regions. We propose that the limited localization of shallow topographically high serpentinized peridotite ridges on the Newfoundland-Iberia and Flemish Cap-Galicia Bank conjugate margins, was directly related to an increase in the rate of extension following the separation of Flemish Cap and Galicia Bank which exhumed deeper, less serpentinized mantle. |
format |
Article in Journal/Newspaper |
author |
Welford, J. K. Smith, J. A. Hall, J. Deemer, S. Srivastava, S. P. Sibuet, Jean-claude |
author_facet |
Welford, J. K. Smith, J. A. Hall, J. Deemer, S. Srivastava, S. P. Sibuet, Jean-claude |
author_sort |
Welford, J. K. |
title |
Structure and rifting evolution of the northern Newfoundland Basin from Erable multichannel seismic reflection profiles across the southeastern margin of Flemish Cap |
title_short |
Structure and rifting evolution of the northern Newfoundland Basin from Erable multichannel seismic reflection profiles across the southeastern margin of Flemish Cap |
title_full |
Structure and rifting evolution of the northern Newfoundland Basin from Erable multichannel seismic reflection profiles across the southeastern margin of Flemish Cap |
title_fullStr |
Structure and rifting evolution of the northern Newfoundland Basin from Erable multichannel seismic reflection profiles across the southeastern margin of Flemish Cap |
title_full_unstemmed |
Structure and rifting evolution of the northern Newfoundland Basin from Erable multichannel seismic reflection profiles across the southeastern margin of Flemish Cap |
title_sort |
structure and rifting evolution of the northern newfoundland basin from erable multichannel seismic reflection profiles across the southeastern margin of flemish cap |
publisher |
Wiley-blackwell Publishing, Inc |
publishDate |
2010 |
url |
https://archimer.ifremer.fr/doc/00001/11202/7876.pdf https://archimer.ifremer.fr/doc/00001/11202/7877.pdf https://doi.org/10.1111/j.1365-246X.2009.04477.x https://archimer.ifremer.fr/doc/00001/11202/ |
genre |
Newfoundland North Atlantic |
genre_facet |
Newfoundland North Atlantic |
op_source |
Geophysical Journal International (0956-540X) (Wiley-blackwell Publishing, Inc), 2010-03 , Vol. 180 , N. 3 , P. 976-U4 |
op_relation |
https://archimer.ifremer.fr/doc/00001/11202/7876.pdf https://archimer.ifremer.fr/doc/00001/11202/7877.pdf doi:10.1111/j.1365-246X.2009.04477.x https://archimer.ifremer.fr/doc/00001/11202/ |
op_rights |
2010 RAS info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1111/j.1365-246X.2009.04477.x |
container_title |
Geophysical Journal International |
container_volume |
180 |
container_issue |
3 |
container_start_page |
976 |
op_container_end_page |
998 |
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1772816728359698432 |