Past Seminars

The Diffuse Plate boundary of Nubia and Iberia in the Western Mediterranean:Crustal deformation evidence for viscous coupling and fragmented lithosphere

Details
  • Dr. José Fernández Torres, Instituto de Geociencias (IGEO), CSIC-UCM, Madrid
  • Date: Oct, 22, 2015 12:00 am
  • Place: Sala d’Actes ICTJA-CSIC
  • Location: C/ Solé i Sabarís s/n, Barcelona
  • Contact: Ramón Carbonell (ICTJA)

Abstract

A spatially dense GNSS-based crustal velocity field for the Iberian Peninsula and Northern Africa allows us to provide new insights into two main tectonic processes currently occurring in this area. In particular, we provide, for the first time, clear evidence for a large-scale clockwise rotation of the Iberian Peninsula with respect to stable Eurasia (Euler pole component: N42.612◦, W1.833◦, clockwise rotation rate of 0.07 deg/Myr). We favor the interpretation that this pattern reflects the quasi-continuous straining of the ductile lithosphere in some sectors of South and Western Iberia in response to viscous coupling of the NW Nubia and Iberian plate boundary in the Gulf of Cádiz. We furnish evidence for a fragmentation of the western Mediterranean basin into independent crustal tectonic blocks, which are delimited by inherited lithospheric shear structures. Among these blocks, an (oceanic-like western) Algerian one is currently transferring a significant fraction of the Nubia–Eurasia convergence rate into the Eastern Betics (SE Iberia) and likely causing the eastward motion of the Baleares Promontory. These processes can be mainly explained by spatially variable lithospheric plate forces imposed along the Nubia–Eurasia convergence boundary.

Related Posts

Privacy policy

In accordance with the Organic Law 3/2018, dated 5 December, on Personal Data Protection and Guarantee of Digital Rights (LOPDGDD), the General Regulation of Data Protection (RGPD) and the related legislation, GEO3BCN-CSIC undertakes to comply with the obligation of secrecy with regard to personal data and the duty to treat them confidentially after carrying out the corresponding risk analyses, in particular, in accordance with the First Additional Provision of the LOPDGDD, the security measures corresponding to those provided for in the National Security Scheme, necessary to prevent its alteration, loss, processing or unauthorised access.

Users may exercise their rights of access, rectification, cancellation, opposition, limitation or portability at any time by writing to the Secretary General of the CSIC at C/Serrano 117, 28006 MADRID (Spain), providing a photocopy of their National Identity Document (DNI) or through the CSIC’s Electronic Register, located at its Electronic Headquarters, for which they must have a recognised electronic certificate. It is possible to contact with the CSIC’s Data Protection Delegate though this email: delegadoprotecciondatos@csic.es

GEO3BCN-CSIC reserves the right to modify this Privacy Policy in order to adapt it to the latest legislations, jurisprudences or interpretations made by the Spanish Data Protection Agency.  In this case, the CSIC will announce such changes, clearly indicating in advance the modifications made, and requesting, if considered necessary, their acceptance.

No
Accept

Este sitio web utiliza cookies para que usted tenga la mejor experiencia de usuario. Si continúa navegando está dando su consentimiento para la aceptación de las mencionadas cookies y la aceptación de nuestra política de cookies, pinche el enlace para mayor información.

ACEPTAR
Aviso de cookies
Scroll to Top