New lithologic and structural data of the central and eastern part of Ceuta (Rif Cordillera)
Nuevos datos de la litología y de la estructura de los sectores central y oriental de Ceuta (Cordillera Bético-Rifeña)
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Publication Date
2016 -
Publisher
Sociedad Geológica de España -
Abstract
In the central and eastern parts of Ceuta two tectonic units are differentiated: a) the Hacho unit, formed by two groups of orthogneisses which foliation permits to establish the structure: an anticline with a periclinal end at its western edge, and b) the Istmo unit, with peridotites at the bottom, followed by migmatitic granulites, gneisses, and dark mica schists. The thrust of the peridotites over the orthogneisses of the Hacho unit occurred under fragile conditions. For the first time several types of rocks, not previously described, have been localized: dark mica schist and phyllites and quartzites, these two last perhaps corresponding to the Federico units. With the new data, these units can be better compared, with those Alpujárride/Sebtide in the sectors of Jubrique-GuadaizaBenahavís