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Geology of the southern part of Sabanalarga Batholith. Implications for terrane theory in the west of Colombia

Guiral Vega, Juan Sebastian and Rincón-Gamero, Jonathan José and Ordoñez-Carmona, Oswaldo (2015) Geology of the southern part of Sabanalarga Batholith. Implications for terrane theory in the west of Colombia. Boletín de Ciencias de la Tierra (38). pp. 41-48. ISSN 2357-3740

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The Colombian Andes are the product of the interaction of terranes with different geological affinity, such as the Western Cordillera, which is made up of blocks of oceanic affinity, that have been accreted to the western boundary of pre-existing terranes with continental affinity. The study area is geologically dominated by the Sabanalarga Batholith, which has at least two facies, gabro-diorite and tonalitiegranodiorite, that intrude the Barroso Formation. Both units have been affected strongly by regional faults generating large areas of mylonites closely related with hydrothermal alterations and mineralization occurrences. Due the clear intrusive relationship between the Sabanalarga Batholith and Barroso Formation, and due the Cauca-Almaguer fault cuts both units without separating them, it is suggested that the Terranes Theory must be reconsidered in this part of the country, because the Cauca-Almaguer fault do not correspond to the boundary between Calima Terrane and the terranes Arquía and Quebradagrande.

Tipo de documento:Artículo - Article
Palabras clave:Sabanalarga Batholith, Barroso Formation, Terranes Theory, Cauca-Almaguer Fault System
Temática:5 Ciencias naturales y matemáticas / Science > 55 Ciencias de la tierra / Earth sciences & geology
Unidad administrativa:Revistas electrónicas UN > Boletín Ciencias de la Tierra
Código ID:60668
Enviado por : Dirección Nacional de Bibliotecas STECNICO
Enviado el día :28 Noviembre 2017 19:36
Ultima modificación:28 Noviembre 2017 19:36
Ultima modificación:28 Noviembre 2017 19:36
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