Preliminary paleomagnetic results in Mesozoic continental basins from the central Moroccan High Atlas

  1. B. Moussaid 1
  2. H. El Ouardi 1
  3. A.Casas 2
  4. J.J. Villalaín 3
  5. T. Román 2
  6. B. Oliva 2
  7. R. Soto 4
  8. S. Torres 3
  1. 1 Université Moulay Ismail
  2. 2 Universidad de Zaragoza
    info

    Universidad de Zaragoza

    Zaragoza, España

    ROR https://ror.org/012a91z28

  3. 3 Universidad de Burgos
    info

    Universidad de Burgos

    Burgos, España

    ROR https://ror.org/049da5t36

  4. 4 Instituto Geológico y Minero de España
    info

    Instituto Geológico y Minero de España

    Madrid, España

    ROR https://ror.org/04cadha73

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Revista:
Geotemas (Madrid)

ISSN: 1576-5172

Año de publicación: 2012

Título del ejemplar: VIII Congreso Geológico de España, Oviedo, 17-19 de julio, 2012.

Número: 13

Páginas: 1160-1163

Tipo: Artículo

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Otras publicaciones en: Geotemas (Madrid)

Resumen

The purpose of this work is to use paleomagnetism as an instrument to bring out informations to solve geological problems in two Jurassic-Cretaceous basins in the Moroccan High Atlas. The Aït Attab and Ouaouizaght basins are located in the northern edge of the central High Atlas, that forms part of the alpine Atlasic belt. It is an intraplate belt, resulting from inversion of extensional and strike-slip basins. Thermal demagnetization reveals a similar characteristic component in almost all sites in the Ait Attab basin. These results resolve the problem of the primary vs. secondary origin of the curved shape in this syncline. Paleomagnetic sites of Aït Attab basin give a positive fold test, indicating that the remagnetization was recorded when the layers were horizontal. In the Ouaouizaght basin, Middle Jurassic to Aptian units acquired a syn-folding remagnetization, whereas the Albo-Cenomanian red beds show a pre-folding magnetization.

Fuente de los datos: Dialnet