Caracterización geoquímica y ambiente geodinámico de génesis de las metabasitas de la Sierra del Algarrobo (Cordillera Bética oriental)

Abstract

The metabasites cropping out in the Sierra del Algarrobo have been studied from petrological and geochemical points of view. They consist of gabbros, dolerites and basalts, which were transformed into eclogites or amphibolites during the Alpine metamorphism. Their primary magmas were tholeiitic basalts originated in E-MORB to N-MORB geodynamic conditions. By comparing these metabasites with those of the Betic and Alpine-Apennine Ophiolites and with basalts from current oceanic ridges, we classify them as ophiolitic and tectonically deriving from the oceanic floor of the Jurassic Western Tethys