Sobre la extensión de la remagnetización cretácica en el Alto Atlas(Marruecos)
- S. Torres-López 2
- J.J. Villalaín 2
- A. Casas 3
- H. El Ouardi 4
- B. Moussaid 4
- V.C. Ruíz-Martínez 1
- 1 Universidad Complutense de Madrid, España
- 2 Universidad de Burgos, España
- 3 Universidad de Zaragoza, España
- 4 Université Moulay Ismail, Marruecos
ISSN: 0213-683X
Année de publication: 2015
Titre de la publication: Comunicaciones presentadas en la LVII Sesión Científica / Madrid, 27-28 de Noviembre de 2014
Número: 57
Pages: 23-26
Type: Article
D'autres publications dans: Geogaceta
Résumé
We present the preliminary results of a paleomagnetic study, in Mesozoic sediments of the Midelt-Errachidia transect in the Moroccan High Atlas. The Natural Remanent Magnetization is dominated by a remagnetization with a very stable behavior and systematic normal polarity, previously observed in a westward region of the Central High Atlas. Using the small circle intersection method we have calculated the direction of this secondary magnetization (D = 336.7°, I = 30.6°). Comparing this direction with the Global Apparent Polar Wander Path (APWP) in African coordinates for Northern Africa we can assign a Cenomanian age (about 100 M.a.) to this remagnetization, similar to that obtained in other regions of the Central High Atlas. This work enhances the hypothesis that there is a widespread remagnetization in the Moroccan High Atlas.