Sierra de Almeida
Sierra Almeida is a mountain range of the Andes located in northern Chile, south of both Cordón de Lila and Salar de Atacama. Geologically it is made up of a batholith of Cambrian and Ordovician age. The rocks of Sierra Almeida are the result of pre-Andean magmatism that occurred during the Famatinian orogeny.[1] The compositions of the plutonic rocks are granodiorite and monzogranite that are either metaluminous or marginally peraluminous.[1] These rocks are remnants of the magmatism along the western rim of the Famatinian orogeny.[1]
References
[edit]- ^ a b c Niemeyer Rubilar, Hans (2020). "Geoquímica de las rocas plutónicas del batolito cambro-ordovícico del Cordón de Lila y de la Sierra de Almeida, Región de Antofagasta, Chile". Andean Geology (in Spanish). 47 (3): 628–640. doi:10.5027/andgeoV47n3-3305.
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