Examinando por Materia "Easter Cordillera"

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    ¿Es el Escudo de Guyana la principal fuente de aporte sedimentario a la cuenca del VMM durante el intervalo Cretácico-Neógeno? implicaciones en la paleogeografía y el levantamiento de los Andes colombianos
    (Universidad EAFIT, 2020) Rodríguez Caicedo, Angie Karolain; Duque Carrillo, Daniel Andrés; Beltrán Triviño, Alejandro
    Different tectonic processes are acting over the northern margin over the Andean Cordillera, where both the subduction of the Nazca plate, as well as the compression processes that gave rise of the tectonic inversion of the Easter Cordillera in Colombia can be highlighted. In areas like the Middle Magdalena Valley, this inversion generated several changes in the sediments accumulation system, changes that can be identify by provenance analysis. In this project the provenance analysis of Olini Group, Set Ti, Ti2 and Mesa Formation was obtain, which the outcrops are between the Middle Magdalena Valley and the western flank of the Eastern Cordillera, between the departmental limits of Boyacá and Santander. These analyzes indicates that the main areas of contribution of these formations are possibly the Central Cordillera and the Guyana Shield, but due to the high tectonic activity that occurs at the end of the Cretaceous and during the Cenozoic, sediment reworking occurred on the easter margin of Colombia associated with the uplift of the Eastern Cordillera.