Deformaciones tectónicas desde el Tortoniense en el Campo de Dalias (Cordilleras Béticas)

Abstract

The Campo de Dalias is an emerged zone located at the northern boundary of Alboran Sea. The Neogene-Quaternary sediments of the Campo de Daifas are deformed by E-W open folds that also uplift Sierra de Cádor. The field studies reveals the existence of several joint sets with trends comprised between N170°E and N120°E some of them active at present. The oldest fault recognised in the region is normal, has an E-W trend, south dipping and is covered by Tortonian calcarenites. Other set of synsedimentary faults with N145°E trend deform Tortonian calcarenites. The best represented faults in the region are the Plio-Quaternary trastensional faults with dextral and sinistral components. Its trends are comprised between N170°E and N120°E and are compatible with a stress field ofSW-NE extension. These faults are mainly reactivated from previous joints and are active at present determining the coastline in the Balanegra fault zone