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DIGITAL.CSIC
Article . 2008 . Peer-reviewed
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Evidencias geomorfológicas de actividad tectónica cuaternaria en el frente montañoso del borde sur de Sierra Nevada: la falla normal de Laujar de Andarax

Authors: Sanz de Galdeano, Carlos; García-Tortosa, Francisco Juan;

Evidencias geomorfológicas de actividad tectónica cuaternaria en el frente montañoso del borde sur de Sierra Nevada: la falla normal de Laujar de Andarax

Abstract

[ES] En el sector de Laujar de Andarax, en el contacto entre el borde sur de Sierra Nevada y el Corredor de las Alpujarras, existe una zona de falla normal activa que se describe por primera vez en este trabajo. Esta falla, que tiene una dirección media E-O, genera un marcado frente montañoso y afecta a materiales del Pleistoceno superior. El frente montañoso se prolonga hacia el oeste menos conservado debido al fuerte encajamiento de la red fluvial. Por el contrario, el sector de Laujar se encuentra menos afectado por dicho encajamiento al situarse entre la divisoria de los ríos que drenan gran parte del corredor (Adra y Andarax). Esta situación ha permitido la conservación de materiales cuaternarios de piedemonte, pudiéndose observar y cuantificar la deformación en base a las edades asignadas. Los valores de levantamiento estimados para el borde sur de Sierra Nevada estarían comprendidos entre 0,43 y 0,75mm/año.

[EN] In the sector of Laujar of Andarax, in the contact of the south border Sierra Nevada and the Alpujarran corridor, an active normal fault exists, now described for the first time in this work. This fault, with an E-W direction, generates a marked mountain front and affects to upper Pleistocene sediments. This mountain front is prolonged toward the west, but less conserved due to the fluvial erosion. By the contrary, the sector of Laujar, in the watershed of two rivers draining great part of the Alpujarran corridor (Adra and Andarax), is less affected by the fluvial erosion, conserving Quaternary piedmont deposits. This fact allowed to observe and quantify the deformations. The uplift rates of the south border of Sierra Nevada according to the vertical movements and the age of the sediments affected by the fault zone are comprise between 0,43 and 0,75mm/year.

Este estudio ha sido financiado por los proyectos CGL200401636/BTE, CGL2004-03333/BTE y los grupos RNM 217 y RNM 325 de la Junta de Andalucía.

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Spain
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Keywords

Falla normal, Active tectonics, Alpujarran Corridor, Mountain front, frente montañoso, Tectónica activa, Frente montañoso, Artículos de Investigación, Betic Cordillera, Corredor de las Alpujarras, Cordillera Bética, falla normal, Normal fault

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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
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