Mise en évidence d'une tectonique compressive Éocène-Oligocène dans l'Ouest de la Cordillère orientale de Colombie, d'après la structure en duplex des gisements d'émeraude de Muzo et de Coscuez (Evidence for an Eocene-Oligocene compressive tectonics in the western part of Eastern Cordillera of Colombia, from the duplex structure of the Muzo and Coscuez emerald deposits)
Abstract
The structures of the emerald deposits of the western part of Eastern Cordillera of Colombia (thrusts, ramps, duplexes, tear faults) have been formed by three deformational events forming a single thrust-tectonics phase, synchronous with the emerald-forming hydrothermalism. As this hydrothermalism is Late Eocene-Early Oligocene in age, it is also the age of the thrust tectonics.
Keywords
mineralization
emerald
beryl
Colombia
compression tectonics
Eocene
Oligocene
Eastern Cordillera
Andes
duplex structure
Andean Orogeny
thrust fault
folds
tectonic ramps
hydrothermal circulation
syntectonic processes
mineral deposits
genesis
deformation
structural analysis
South America
Paleogene
Tertiary
Domains
Tectonics
Origin : Publisher files allowed on an open archive