Introducción a la geología del sector Vélez–Bolívar–Guavatá (dpto. De santander, colombia) y su importancia para la exploración de depósitos hidrotermales.

Abstract

The studied sector in the Vélez Province (Dpto. of Santander, Colombia), presents lower Cretaceous marine sedimentary rocks (Cumbre, Rosablanca, Paja and Tablazo Formations), deformed during the different phases of the Andean Orogeny, which gave rise to structures such as: The Chirle and Vélez Anticlines, The Vélez Syncline and The Guamito, Peña Negra, Hervedora Faults, among others.
The presence of sectors with slaty cleavage; veins filled by brechoid asphaltites, calcite, K-mica, agregates sphalerite and chlorite, albitites and sulphide bands, among others manifestations, in the influence areas of The Guamito and Peña Negra Faults, are interpreted as products associated to fluid-rock interaction processes.
Consequently, these sectors are considered as the greater interest for the exploration of new hydrothermal mineralitatios (emeralds?).