Aplicación de la anisotropía de la susceptibilidad magnética en el Jurásico inferior calcáreo al análisis estructural del Alto Atlas Central(región de Imilchil, Marruecos)
- Bennacer Moussaid 1
- Antonio Casas-Sainz 2
- Hmidou El Ouardi 3
- Juan José Villalaín 4
- Abdelkader Mahmoudi 3
- Sara Torres-López 4
- Vicente Carlos Ruiz-Martínez 5
- Pablo Calvín 4
- 1 Université Hassan II, Marruecos
- 2 Universidad de Zaragoza, España
- 3 Université Moulay Ismail, Marruecos
- 4 Universidad de Burgos, España
- 5 Universidad Complutense de Madrid, España
ISSN: 0213-683X
Año de publicación: 2016
Número: 59
Páginas: 27-30
Tipo: Artículo
Otras publicaciones en: Geogaceta
Resumen
In this work we present the results of the application of Anisotropy of Magnetic Susceptibility (AMS) to structural analysis in a sector of the Central High Atlas (Morocco). The studied sedimentary sequences comprise marly limestones and calcareous marls, having medium to high susceptibility values in most sites. The obtained magnetic fabrics (average per sites) are both prolate and oblate. Sites located in the gentle, wide synclines that occupy most part of the studied area show a magnetic fabric that can be interpreted as primary, probably acquired during sedimentation or early diagenesis. The magnetic lineation in these cases is very well defined, and shows a NWSE trend, that can be interpreted as related to the extension direction during the Jurassic, responsible for the opening of the High Atlas basin. Conversely, sites located in the NE-SW-trending anticlinal ridges, some of them showing axial-plane cleavage, show a magnetic fabric modified by compression, whose lineation is parallel lo the axis of these anticlines.