Tectónica extensional durante el Triásico Superior en el extremo oriental de la cuenca del Algarve (Ayamonte, España) y la reactivación de fallas durante el Plioceno-Cuaternario

  1. Francisco M. Alonso-Chaves 1
  2. Encarnación García-Navarro 1
  3. Carlos Fernández 1
  4. Eduardo Mayoral 1
  1. 1 Departamento de Ciencias de la Tierra, Universidad de Huelva
Journal:
Geogaceta

ISSN: 0213-683X

Year of publication: 2020

Issue: 67

Pages: 19-22

Type: Article

More publications in: Geogaceta

Sustainable development goals

Abstract

The geological cartography carried out in an area near Aya-monte (Huelva) allows us to analyze the most significant geological features of a structural high in the eastern end of the Algarve basin. The stratigraphic record of a transgression during the Upper Triassic, associated with a “rifting” event linked to the beginning of the ope-ning of the Atlantic Ocean, is described. The geometric style of the systems of normal faults simultaneous with the igneous activity of the Triassic and the posterior deformations is also shown. The reacti-vation of the fault zones during the Pliocene-Quaternary and the ex-humation of the Mesozoic paleo-cover is proposed in relation to the recent tectonics, linked to the evolution of the Guadalquivir basin.

Funding information

Es una contribuci?n a los proyectos de investigaci?n: CGL2013-46368-P, PGC2018-100914-B-I00 y CGL2015-66835-P. Grupo de Investigaci?n RNM276 de la Junta de Andaluc?a y el Centro Cient?fico Tecnol?gico de la Universidad de Huelva. Los autores agradecen la revisi?n cr?tica del manuscrito original realizada por el Dr. Carlos Liesa y otro revisor an?nimo.