Soto, R. and Casas-Sainz, A.M. and Oliva-Urcia, B. and García-Lasanta, C. and Izquierdo-Llavall, E. and Moussaid, B. and Kullberg, J.C. and Román-Berdiel, T. and Sánchez-Moya, Y. and Sopeña, A. and Torres-López, S. and Villalaín, J.J. and El-Ouardi, H. and Gil-Peña, I. and Hirt, A.M. (2019) Triassic stretching directions in Iberia and North Africa inferred from magnetic fabrics. Terra Nova, 31 (5). pp. 465-478.

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Abstract

During the Triassic, Iberia and western North Africa displayed a unique situation in relation with the Central and North Atlantic opening and westward expansion of the Tethys. Unravelling the stretching direction in Triassic deposits of the studied area can help in our understanding of this scenario. The tectonic setting is characterized by localized basins with strong thickness variations greatly influenced by previous post-Variscan mechanical discontinuities. In this work, we revise and compile magnetic fabric data from eight Triassic depocentres in terms of defining the stretching direction (i.e. magnetic lineation), resulting from extensional deformation of this period. Data show the importance of the opening of the Atlantic rift as the leading process during the Triassic. Dextral transtension can explain the deflection of the extensional direction observed in most studied depocentres that is caused by the activity of previous major oblique faults. © 2019 John Wiley & Sons Ltd

Item Type: Article
Uncontrolled Keywords: basin analysis; deformation; depocenter; discontinuity; lineation; magnetic fabric; paleomagnetism; tectonic setting; Triassic, Iberian Peninsula; North Africa
Subjects: Earth and Planetary Sciences
Divisions: SCIENTIFIC PRODUCTION > Earth and Planetary Sciences
Depositing User: Administrateur Eprints Administrateur Eprints
Last Modified: 31 Jan 2020 15:46
URI: http://eprints.umi.ac.ma/id/eprint/2828

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