Thin-shell modeling of neotectonics in the Azores-Gilbraltar region

I. Jiménez-Munt, P. Bird, M. Fernàndez

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

We applied the thin-shell neotectonic modeling method to study the neotectonics of the Africa/Eurasia plate boundary in the Azores-Gbraltar region. The plate boundary consists of a simple fault system running from Azores to the Gorringe Bank where it branches along the Betics and Rift-Tell thrust fronts. Major faults in west Iberia and NW Africa have also been incorporated. Results are compared with seismic strain rates, fault slip rates and stress orientations. The best estimate for the fault friction coefficient is 0.1-0.15 meaning that the plate-boundary is only about 1/4 as strong as the adjacent lithosphere. The largest fault slip rates (>1.5 mm/yr) are obtained along the Gloria fault (strike-slip), and the Betic (transpressive) and Rif-Tell (compressive) thurst systems. Whereas tectonic activity in the Atlas region is comparable to that obtained along the plate boundary, the fault slip rates in the west Iberia fault system are one order of magnitude less.

Original languageEnglish
Pages (from-to)1083-1086
Number of pages4
JournalGeophysical Research Letters
Volume28
Issue number6
DOIs
Publication statusPublished - 15 Mar 2001
Externally publishedYes

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