Sobre la extensión de la remagnetización cretácica en el Alto Atlas(Marruecos)

  1. S. Torres-López 2
  2. J.J. Villalaín 2
  3. A. Casas 3
  4. H. El Ouardi 4
  5. B. Moussaid 4
  6. V.C. Ruíz-Martínez 1
  1. 1 Universidad Complutense de Madrid, España
  2. 2 Universidad de Burgos, España
  3. 3 Universidad de Zaragoza, España
  4. 4 Université Moulay Ismail, Marruecos
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Revista:
Geogaceta

ISSN: 0213-683X

Ano de publicación: 2015

Título do exemplar: Comunicaciones presentadas en la LVII Sesión Científica / Madrid, 27-28 de Noviembre de 2014

Número: 57

Páxinas: 23-26

Tipo: Artigo

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Outras publicacións en: Geogaceta

Resumo

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.

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