Restitución estructural por medio de direcciones paleomagnéticas en un cuerpo de gabro(macizo de Tirrhist, Alto Atlas central, Marruecos)

  1. Pablo Calvín 1
  2. Vicente C. Ruíz-Martínez 2
  3. Juan J. Villalaín 1
  4. Bennacer Moussaid 3
  5. Hmidou El Ouardi 3
  1. 1 Universidad de Burgos
    info

    Universidad de Burgos

    Burgos, España

    ROR https://ror.org/049da5t36

  2. 2 Universidad Complutense de Madrid
    info

    Universidad Complutense de Madrid

    Madrid, España

    ROR 02p0gd045

  3. 3 Université Moulay Ismail, Marruecos
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Journal:
Geogaceta

ISSN: 0213-683X

Year of publication: 2015

Issue: 58

Pages: 75-78

Type: Article

DIALNET GOOGLE SCHOLAR lock_openArias Montano editor

More publications in: Geogaceta

Abstract

The origin of the anticlines of the Central High Atlas (Morocco) is still debated due to the different processes involved in their formation.We show a paleomagnetic study in the Tirrhist anticline developed in Middle Jurassic gabbro bodies (8 sites). Principal component analysis led to the isolation of the characteristic remanent magnetization (ChRM) that shows low to intermediate coercivities and unblocking temperatures of 565ºC and is carried by magnetite. The corresponding site-mean directions (with statistical parameters useful for tectonic purposes in most of the sites) are dispersed according to a small circle around an E-W trending axis. Therefore, the ChRM is used to restore the structure of the anticline at the time of blocking of the magnetization, shedding light on post-emplacement tectonic processes and allowing us conclude that some of the actual deformation was originated before the moment of blocking the magnetization.

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