Principales características tectónicas de la cuenca de la Guajira.

Abstract

This report was developed with information provided by the National Hydrocarbons Agency (ANH) for the ANH-Unipamplona project "Geological integration, evaluation of petroleum systems and prospectivity of Colombia's frontier basins: Guajira and Guajira offshore basins". This project was carried out in order to find new oil and gas prospects in the country, and at the same time, to promote the knowledge of the basin. The main objective was to interpret representative seismic sections of the La Guajira basin, in this case the northern onshore zone, this interpretation was developed in Seisware 10.5 software. From the information provided, basements, sequences were correlated and depositional and structural regimes were identified. These features were evidenced in the clinoforms formed (seen in the northern sequences) when the accumulation rate exceeds the accommodation space, a consequence of the exhumation of the mountain ranges, in addition to the reactivations of faults due to recent tectonism, causing folding in the sequences above these structures (seen in the southeastern sequences). These characteristics were a consequence of the transpressional strike- slip structures belonging to the Jarara and Macuira fault system, as well as the high rate of sedimentation seen in the northern section and the continuous sedimentation in the southeastern section. These particularities from the petroleum point of view, form ideal traps for the accumulation of hydrocarbons, and evidence the potential of the area.