Anatomy and tectonic significance of WNW-ESE and NE-SW lineaments at a transpressive plate boundary (Nubia-Iberia).

Duarte, J. C., Valadares, V., Terrinha, P., Rosas, F., Zitellini, N. and Gracia, E. (2009) Anatomy and tectonic significance of WNW-ESE and NE-SW lineaments at a transpressive plate boundary (Nubia-Iberia). Trabajos de Geologia, 29 . pp. 237-241.

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Abstract

Recent mapping of the Gulf of Cadiz seafloor permitted to identify major tectonic lineaments: the SWIM lineaments (Zitellini et al., 2009) and Cadiz lineament, striking WNW-ESE and NE-SW, respectively. Multibeam swath bathymetry and interpretation of multi-channel seismic data indicate that these features can be interpreted to correspond to the seafloor morphological expression of active dextral strike-slip faults. Based on the interpreted data and recently published GPS plate kinematic velocity vectors of Nubia with respect to Iberia and the Alboran block (e.g. Fernandes et al.; 2003 Stich et al., 2006) we propose that the SWIM Faults are related to the general NW-SE convergence of Nubia with respect to Iberia, and the Cadiz fault is related to the westward movement of the Gibraltar orogenic arc.

Document Type: Article
Keywords: Gulf of Cadiz, seafloor mapping, SWIM lineaments, Cadiz lineament, active tectonics, Alboran block, Gibraltar orogenic arc
Refereed: Yes
Open Access Journal?: Yes
ISSN: 0474-9588
Projects: FLOWS
Date Deposited: 27 Jan 2015 13:57
Last Modified: 27 Jan 2015 13:57
URI: http://oceanrep.geomar.de/id/eprint/27147

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