Premier pôle paléomagnétique,d'âge Moscovien contraint par un test du pli,obtenu dans le bassin d'Illizi (Craton saharien,Algérie)First palaeomagnetic pole,of Moscovian age constrained by a fold test,in the Illizi Basin (Saharan Craton,Algeria) |
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| Authors: | Boualem Bayou Mohamed El-Messaoud Derder Bernard Henry Hamou Djellit Mohamed Amenna |
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| Institution: | 1. CRAAG, B.P. 63, 16340 Bouzaréah, Alger, Algérie;2. Géomagnétisme et paléomagnétisme, IPGP et CNRS, 4, av. de Neptune, 94107 Saint-Maur cedex, France |
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| Abstract: | Palaeomagnetic study, carried out in the Moscovian (～305 Ma) formation in the Edjeleh anticline, shows the existence of three magnetisation components. Two of them are probably Cenozoic and Permian remagnetisations. The third component determined by both well defined ChRMs and remagnetisation circles analysis passes the fold test. Because the folding started before or during the Stephano-Autunian, this third component is the primary magnetisation. Its palaeomagnetic pole (28.3°S, 58.9°E), close to other poles from the Saharan platform obtained from neighbouring periods but without palaeomagnetic tests, confirms the age of these last data. To cite this article: B. Bayou et al., C. R. Geoscience 334 (2002) 81–87. |
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| Keywords: | palaeomagnetic pole Moscovian Saharan Craton Africa fold test pôle paléomagnétique Moscovien Craton saharien Afrique test du pli Géophysique interne Internal Geophysics |
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