Mobility of Morocco
The mobility of Morocco relative to Africa during the early history of the Atlantic has long been debated: arguments have been developed from Atlantic kinematic considerations and from paleomagnetic results. Both types of arguments are reexamined here. Using a new model of the Atlantic Ocean evoluti...
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Canadian Science Publishing
1980
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Online Access: | http://dx.doi.org/10.1139/e80-162 http://www.nrcresearchpress.com/doi/pdf/10.1139/e80-162 |
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crcansciencepubl:10.1139/e80-162 2023-12-17T10:30:27+01:00 Mobility of Morocco Sichler, Bertrand Olivet, Jean-Louis Auzende, Jean-Marie Jonquet, Hélène Bonnin, Jean Bonifay, Alain 1980 http://dx.doi.org/10.1139/e80-162 http://www.nrcresearchpress.com/doi/pdf/10.1139/e80-162 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 17, issue 11, page 1546-1558 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1980 crcansciencepubl https://doi.org/10.1139/e80-162 2023-11-19T13:38:13Z The mobility of Morocco relative to Africa during the early history of the Atlantic has long been debated: arguments have been developed from Atlantic kinematic considerations and from paleomagnetic results. Both types of arguments are reexamined here. Using a new model of the Atlantic Ocean evolution described elsewhere, it is shown that the reconstructions of the positions of Africa relative to North America before the Atlantic opening, and at the times of magnetic anomalies M22 and J, do not imply a major motion of Morocco independent of Africa during these periods of time. The corresponding geomagnetic paleopoles have been recomputed from sample sites located on both "mobile" Morocco and "stable" Africa. The results indicate that the virtual geomagnetic pole of "mobile" Morocco for the Liassic falls within the 95% confidence cone of "stable" Africa. It is thus concluded that no major movement has occurred between "mobile" Morocco and "stable" Africa during the early phases of opening of the central Atlantic Ocean. This is in accordance with the field geological observations on the South Atlas fault; however, limited motion along this lineament, as observed in the field, is still compatible with the above conclusion, owing to the limited resolving power of both kinematic and paleomagnetic methods. Article in Journal/Newspaper Geomagnetic Pole Canadian Science Publishing (via Crossref) Canadian Journal of Earth Sciences 17 11 1546 1558 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Sichler, Bertrand Olivet, Jean-Louis Auzende, Jean-Marie Jonquet, Hélène Bonnin, Jean Bonifay, Alain Mobility of Morocco |
topic_facet |
General Earth and Planetary Sciences |
description |
The mobility of Morocco relative to Africa during the early history of the Atlantic has long been debated: arguments have been developed from Atlantic kinematic considerations and from paleomagnetic results. Both types of arguments are reexamined here. Using a new model of the Atlantic Ocean evolution described elsewhere, it is shown that the reconstructions of the positions of Africa relative to North America before the Atlantic opening, and at the times of magnetic anomalies M22 and J, do not imply a major motion of Morocco independent of Africa during these periods of time. The corresponding geomagnetic paleopoles have been recomputed from sample sites located on both "mobile" Morocco and "stable" Africa. The results indicate that the virtual geomagnetic pole of "mobile" Morocco for the Liassic falls within the 95% confidence cone of "stable" Africa. It is thus concluded that no major movement has occurred between "mobile" Morocco and "stable" Africa during the early phases of opening of the central Atlantic Ocean. This is in accordance with the field geological observations on the South Atlas fault; however, limited motion along this lineament, as observed in the field, is still compatible with the above conclusion, owing to the limited resolving power of both kinematic and paleomagnetic methods. |
format |
Article in Journal/Newspaper |
author |
Sichler, Bertrand Olivet, Jean-Louis Auzende, Jean-Marie Jonquet, Hélène Bonnin, Jean Bonifay, Alain |
author_facet |
Sichler, Bertrand Olivet, Jean-Louis Auzende, Jean-Marie Jonquet, Hélène Bonnin, Jean Bonifay, Alain |
author_sort |
Sichler, Bertrand |
title |
Mobility of Morocco |
title_short |
Mobility of Morocco |
title_full |
Mobility of Morocco |
title_fullStr |
Mobility of Morocco |
title_full_unstemmed |
Mobility of Morocco |
title_sort |
mobility of morocco |
publisher |
Canadian Science Publishing |
publishDate |
1980 |
url |
http://dx.doi.org/10.1139/e80-162 http://www.nrcresearchpress.com/doi/pdf/10.1139/e80-162 |
genre |
Geomagnetic Pole |
genre_facet |
Geomagnetic Pole |
op_source |
Canadian Journal of Earth Sciences volume 17, issue 11, page 1546-1558 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e80-162 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
17 |
container_issue |
11 |
container_start_page |
1546 |
op_container_end_page |
1558 |
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1785583413912141824 |