Volume 1 Quaternary Chapter 3 Neogene https://doi.org/10.32685/pub.esp.35.2019.03 Tectonostratigraphic Terranes Published online 14 April 2020 in Colombia: An Update First Part: Continental Terranes Paleogene Jorge Julián RESTREPO1* and Jean–François TOUSSAINT2 1
[email protected] Universidad Nacional de Colombia Sede Medellín GEMMA Research Group Abstract The quite abundant geological information that has been produced in recent Cretaceous years in Colombia, especially in geochronological and geological mapping, necessitates Medellín, Colombia 2
[email protected] updating the mosaic of geological terranes that comprise the Colombian territory. Universidad Nacional de Colombia Several modifications to these characteristics and boundaries are proposed for ter- Medellín, Colombia * Corresponding author ranes such as Chibcha, Tahamí, and Calima. Some small terranes that have been de- Jurassic fined recently, including Anacona, Ebéjico (Quebradagrande), and Pozo (Arquía), are placed within the context of the larger terranes. In addition, some new terranes, in- cluding Yalcón, Bocaná, Aburrá, Kogi, and Tairona, are defined and their characteristics are described. With these new geochronological data, we propose that the metamor- phic Cajamarca Complex be replaced by two new lithodemical units: the Antioquia Triassic Complex, which covers mostly rocks that formed during Permian and Triassic meta- morphism, and the Coello Complex, which comprises metamorphic rocks that formed during Jurassic metamorphism. Future lines of investigation are proposed to solve remaining problems, especially the boundaries of some of the newly defined terranes. Permian Keywords: continental terranes, accretions, displaced terranes, Colombia, Andes. Resumen La abundante cantidad de información geológica que se ha generado en los últimos años en Colombia, en particular geocronológica y cartográfica, implica la necesidad de actualizar el mosaico de terrenos geológicos que constituyen el terri- Carboniferous torio colombiano.