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Title

Tectonic indentation in the central Alboran Sea (westernmost Mediterranean)

AuthorsEstrada, Ferran ; Galindo-Zaldívar, Jesús; Vázquez, J. T.; Ercilla, Gemma ; D'Acremont, E.; Alonso, Belén ; Gorini, Christian
Issue DateFeb-2018
PublisherWiley-Blackwell
CitationTerra Nova 30(1): 24-33 (2018)
AbstractThe Alboran Sea constitutes a Neogene–Quaternary basin of the Betic–Rif Cordillera, which has been deformed since the Late Miocene during the collision between the Eurasian and African plates in the westernmost Mediterranean. NNE–SSW sinistral and WNW–ESE dextral conjugate fault sets forming a 75° angle surround a rigid basement spur of the African plate, and are the origin of most of the shallow seismicity of the central Alboran Sea. Northward, the faults decrease their transcurrent slip, becoming normal close to the tip point, while NNW–SSE normal and sparse ENE–WSW reverse to transcurrent faults are developed. The uplifting of the Alboran Ridge ENE–WSW antiform above a detachment level was favoured by the crustal layering. Despite the recent anticlockwise rotation of the Eurasian–African convergence trend in the westernmost Mediterranean, these recent deformations—consistent with indenter tectonics characterised by a N164°E trend of maximum compression—entail the highest seismic hazard of the Alboran Sea
Description10 pages, 7 figures
Publisher version (URL)https://doi.org/10.1111/ter.12304
URIhttp://hdl.handle.net/10261/163633
Identifiersdoi: 10.1111/ter.12304
issn: 0954-4879
e-issn: 1365-3121
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