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Title

A new tectonic discontinuity in the Betic Cordillera deduced from active tectonics and seismicity in the Tabernas Basin

AuthorsSanz de Galdeano, Carlos ; Shanov, Stefan; Galindo-Zaldívar, Jesús; Radulov, Alexander; Nikolov, Gabriel
KeywordsBetic Cordillera
Normal faults
Strike-slip faults
Paleostress
Earthquakes
Issue DateAug-2010
PublisherElsevier
CitationJournal of Geodynamics 50(2): 57-66 (2010)
AbstractIn the Tabernas Desert, a Neogene basin situated in SE Spain, major E-W folds coexist with large E-W dextral faults and abundant NNW-SSE faults. These faults affect the Plio-Quaternary sediments. The palaeostress ellipsoids indicate a roughly constant tension (σ3 axe) in the ENE-WSW direction, coexisting with a changeable direction of the main compression (σ1 axe) from the vertical to the NW-SE direction. The numerous NNW-SSE faults in southern areas, directly to the east of the city of Almería, tend to propagate northwards, forming a tectonic discontinuity of the Betic Internal Zone. The 2002 seismic swarm of the Gergal earthquake occurred in this NNW-SSE fault zone. In this setting, the E-W fractures act as transfer faults.
Description10 páginas, 8 figuras, 1 tabla.
Publisher version (URL)http://dx.doi.org/10.1016/j.jog.2010.02.005
URIhttp://hdl.handle.net/10261/31522
DOI10.1016/j.jog.2010.02.005
ISSN0264-3707
Appears in Collections:(IACT) Artículos
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