
handle: 10261/206153 , 10481/57361
[ES] Al NO de Sierra Tejeda solo se pueden diferenciar dos unidades tectónicas alpujárrides, la de Almijara y, sobre ella, la de Robledal, simplificando divisiones previas. Datos hidrogeológicos avalan esta interpretación ya que apuntan a la posible conexión hidráulica entre dos áreas ocupadas por mármoles (sectores de Tejeda y Rodaderos) que previamente han sido consideradas como unidades tectónicas diferentes lo que lo hace improbable. En la unidad Robledal la presencia de gneises en la parte inferior de la secuencia litológica permite su correlación con otras unidades del grupo Guájares-Jubrique/ Los Reales (grupo superior de unidades del Complejo Alpujárride). Deformaciones extensionales se superponen al cabalgamiento de unidades, pero a las que no damos la enorme importancia atribuida en previos modelos, pues no permiten, al menos en esta área, la diferenciación de nuevas unidades tectónicas. Se muestran, además, nuevas fallas E-O situadas al N de Sierra Tejeda, que facilitaron el desplazamiento hacia el oeste de la Zona Interna Bética.
In the NW of Sierra Tejeda (Spain) it is possible differentiate only two Alpujarride tectonic units, i.e. the Almijara and, in an upper position, the Robledal unit, simplifying previous divisions. Hydrogeological data support this interpretation since a hydraulic connection exists between the two areas occupied by marbles (Sierra Tejeda and Rodaderos sectors). Both areas has been previously considered as belonging to two different tectonic units not directly connected. In the Robledal unit, gneisses in the lower part of the lithologic sequence correlate with other units of the Guajares-Jubrique/Los Reales group (upper group of Alpujarride units). Extensional deformations are superposed over these tectonic units, but, according to field observations, they have not the enormous importance attributed to them in previous models, as they do not differentiate new tectonic units, at least in this area. New E-W faults are drawn along the northern edge of Sierra Tejeda, contributing to the westward drift of the Betic Internal Zone.
This work is a contribution of the projects DAMAGE (AEI/FEDER CGL2016-80687-R) and CGL2015-65858-R of DGICYT, and the research groups RMN-308 and RMN-370 of Andalusia Regional Government. We thank Professor M. Martín-Martín (Alicante) and an anonymous reviewer whose corrections and suggestions have clearly improved this article
Zona Interna Bética, Alpujarride complex, E-W faults, Betic Internal Zone, Betic internal zone, extensional deformations, fallas E-O, Complejo Alpujárride, deformaciones extensionales
Zona Interna Bética, Alpujarride complex, E-W faults, Betic Internal Zone, Betic internal zone, extensional deformations, fallas E-O, Complejo Alpujárride, deformaciones extensionales
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