Universidad Complutense de Madrid
E-Prints Complutense

Triassic stretching directions in Iberia and North Africa inferred from magnetic fabrics

Impacto

Downloads

Downloads per month over past year

Soto, Ruth and Casas Sáinz, Antonio and Oliva Urcia, Belén and García Lasanta, Cristina and Izquierdo Llavall, Esther and Moussaid, Bennacer and Kullberg, José Carlos and Román Berdiel, Teresa and Sánchez Moya, Yolanda and Sopeña, Alfonso and Torres López, Sara and Villalaín Santamaría, Juan José and El‐Ouardi, Hamidou and Gil Peña, Inmaculada and Hirt, Ann M. (2019) Triassic stretching directions in Iberia and North Africa inferred from magnetic fabrics. Terra Nova, 31 (5). pp. 465-478. ISSN 0954-4879, ESSN: 1365-3121

[img] PDF
Restringido a Repository staff only

1MB

Official URL: https://onlinelibrary.wiley.com/doi/full/10.1111/ter.12416?af=R



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.


Item Type:Article
Subjects:Sciences > Geology > Geodynamics
Sciences > Geology > Stratigraphic geology
ID Code:57666
Deposited On:12 Nov 2019 15:52
Last Modified:13 Nov 2019 08:23

Origin of downloads

Repository Staff Only: item control page