Tectonic implications of canyon directions over the Northeast Atlantic Continental Margin
International audience The basis of this study is a new bathymetric map of the northeast Atlantic compiled from previously published maps made from conventional echosounder data, plus all Sea Beam data acquired on board the R/V JEAN CHARCOT since 1977. As most of the Sea Beam data have been obtained...
Published in: | Tectonics |
---|---|
Main Authors: | , |
Other Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
1986
|
Subjects: | |
Online Access: | https://hal.archives-ouvertes.fr/hal-01261558 https://hal.archives-ouvertes.fr/hal-01261558/document https://hal.archives-ouvertes.fr/hal-01261558/file/Lallemand1986-Tectonics.pdf https://doi.org/10.1029/TC005i007p01125 |
id |
ftccsdartic:oai:HAL:hal-01261558v1 |
---|---|
record_format |
openpolar |
spelling |
ftccsdartic:oai:HAL:hal-01261558v1 2023-05-15T17:41:10+02:00 Tectonic implications of canyon directions over the Northeast Atlantic Continental Margin Lallemand, Serge Sibuet, Jean-Claude Laboratoire de Géodynamique (ERA-601 CNRS ) Centre National de la Recherche Scientifique (CNRS) Institut Français de Recherche pour l'Exploitation de la Mer - Brest (IFREMER Centre de Bretagne) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) 1986-07-01 https://hal.archives-ouvertes.fr/hal-01261558 https://hal.archives-ouvertes.fr/hal-01261558/document https://hal.archives-ouvertes.fr/hal-01261558/file/Lallemand1986-Tectonics.pdf https://doi.org/10.1029/TC005i007p01125 en eng HAL CCSD American Geophysical Union (AGU) info:eu-repo/semantics/altIdentifier/doi/10.1029/TC005i007p01125 hal-01261558 https://hal.archives-ouvertes.fr/hal-01261558 https://hal.archives-ouvertes.fr/hal-01261558/document https://hal.archives-ouvertes.fr/hal-01261558/file/Lallemand1986-Tectonics.pdf doi:10.1029/TC005i007p01125 info:eu-repo/semantics/OpenAccess ISSN: 0278-7407 EISSN: 1944-9194 Tectonics https://hal.archives-ouvertes.fr/hal-01261558 Tectonics, American Geophysical Union (AGU), 1986, 5 (7), pp.1125-1143. ⟨10.1029/TC005i007p01125⟩ [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics info:eu-repo/semantics/article Journal articles 1986 ftccsdartic https://doi.org/10.1029/TC005i007p01125 2021-11-28T01:12:33Z International audience The basis of this study is a new bathymetric map of the northeast Atlantic compiled from previously published maps made from conventional echosounder data, plus all Sea Beam data acquired on board the R/V JEAN CHARCOT since 1977. As most of the Sea Beam data have been obtained on the continental margin from Porcupine Seabight to the south of the Iberian Peninsula, a precise picture of the continental slope is given. A statistical analysis of the canyons, based on 750 measurements, reveals that many of the canyons present sharp changes in their direction, indicating a structural control mainly linked to the late Hercynian trends, especially around the Iberian Peninsula. Nevertheless, the paths of canyons may merely reflect recent gravity processes, as in the Porcupine Seabight. Canyons locally follow the directions of listric and associated transecting faults (Permian to Triassic and upper Jurassic to lower Cretaceous), as on the Celtic Article in Journal/Newspaper Northeast Atlantic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Charcot ENVELOPE(139.017,139.017,-69.367,-69.367) Porcupine Seabight ENVELOPE(-13.000,-13.000,50.500,50.500) Tectonics 5 7 1125 1143 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics |
spellingShingle |
[SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics Lallemand, Serge Sibuet, Jean-Claude Tectonic implications of canyon directions over the Northeast Atlantic Continental Margin |
topic_facet |
[SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics |
description |
International audience The basis of this study is a new bathymetric map of the northeast Atlantic compiled from previously published maps made from conventional echosounder data, plus all Sea Beam data acquired on board the R/V JEAN CHARCOT since 1977. As most of the Sea Beam data have been obtained on the continental margin from Porcupine Seabight to the south of the Iberian Peninsula, a precise picture of the continental slope is given. A statistical analysis of the canyons, based on 750 measurements, reveals that many of the canyons present sharp changes in their direction, indicating a structural control mainly linked to the late Hercynian trends, especially around the Iberian Peninsula. Nevertheless, the paths of canyons may merely reflect recent gravity processes, as in the Porcupine Seabight. Canyons locally follow the directions of listric and associated transecting faults (Permian to Triassic and upper Jurassic to lower Cretaceous), as on the Celtic |
author2 |
Laboratoire de Géodynamique (ERA-601 CNRS ) Centre National de la Recherche Scientifique (CNRS) Institut Français de Recherche pour l'Exploitation de la Mer - Brest (IFREMER Centre de Bretagne) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) |
format |
Article in Journal/Newspaper |
author |
Lallemand, Serge Sibuet, Jean-Claude |
author_facet |
Lallemand, Serge Sibuet, Jean-Claude |
author_sort |
Lallemand, Serge |
title |
Tectonic implications of canyon directions over the Northeast Atlantic Continental Margin |
title_short |
Tectonic implications of canyon directions over the Northeast Atlantic Continental Margin |
title_full |
Tectonic implications of canyon directions over the Northeast Atlantic Continental Margin |
title_fullStr |
Tectonic implications of canyon directions over the Northeast Atlantic Continental Margin |
title_full_unstemmed |
Tectonic implications of canyon directions over the Northeast Atlantic Continental Margin |
title_sort |
tectonic implications of canyon directions over the northeast atlantic continental margin |
publisher |
HAL CCSD |
publishDate |
1986 |
url |
https://hal.archives-ouvertes.fr/hal-01261558 https://hal.archives-ouvertes.fr/hal-01261558/document https://hal.archives-ouvertes.fr/hal-01261558/file/Lallemand1986-Tectonics.pdf https://doi.org/10.1029/TC005i007p01125 |
long_lat |
ENVELOPE(139.017,139.017,-69.367,-69.367) ENVELOPE(-13.000,-13.000,50.500,50.500) |
geographic |
Charcot Porcupine Seabight |
geographic_facet |
Charcot Porcupine Seabight |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
ISSN: 0278-7407 EISSN: 1944-9194 Tectonics https://hal.archives-ouvertes.fr/hal-01261558 Tectonics, American Geophysical Union (AGU), 1986, 5 (7), pp.1125-1143. ⟨10.1029/TC005i007p01125⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/TC005i007p01125 hal-01261558 https://hal.archives-ouvertes.fr/hal-01261558 https://hal.archives-ouvertes.fr/hal-01261558/document https://hal.archives-ouvertes.fr/hal-01261558/file/Lallemand1986-Tectonics.pdf doi:10.1029/TC005i007p01125 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/TC005i007p01125 |
container_title |
Tectonics |
container_volume |
5 |
container_issue |
7 |
container_start_page |
1125 |
op_container_end_page |
1143 |
_version_ |
1766142524171223040 |