Análisis morfo-estructural del borde de la falla Picota del sector Malacatos, mediante la integración de datos geofísicos (gravimetría yo TRE) y geológicos de superficie.

Abstract

Abstract:The present investigation is focused on characterizing the extension and takeoff of the Picota fault at the edges of the Malacatos sedimentary basin, by integrating geological and geophysical interpretations. The interpretation of the field in the Malacatos sedimentary basin on the northeastern edge is made up of a sequence of phyllites and quartzites, and orthogneis granitoids forming the basin of the basin, and a sequence of sandstones and limolites, covered by a flood-alluvial. Here the metamorphic rocks have geomorphological features that correspond to the most prominent areas affected by the Picota fault, the sedimentary rocks have small valleys and hills. The presence of groundwater levels in depth and surface forming swamps are related to the edge failure. Based on the 2D models of TRE and Gravimetry it has been determined that the granitoid and metamorphic sequence were lifted by a compressive system generating the Picota fault as a riding structure. In addition, the sedimentary fill is superimposed by the granitoid, so a tectonic contact described as an inverse type edge fault related to the Picota fault is possibly interpreted.