Comparación sedimentológica y de procedencia de sedimentos en la desembocadura del río Sinú en el margen Caribe y la desembocadura del río Patía en el margen Pacífico Colombiano.

Abstract

Provenance analysis is an indispensable tool for: understanding sedimentary processes, the relationship between source rock and sediments, and the influence of external agents such as climate, weathering and tectonics on them. Its application is wide and mainly used for diagenesis modeling and tectonic reconstructions. This study was carried out based on the description of sediment stratigraphic columns, textural characteristics and facies relationships of beach, dune and tidal sediments from the mouths of the Sinú river on the Caribbean margin and the mouth of the Patía river on the Colombian Pacific margin. Mineralogical characterization was performed by petrography, x-ray diffraction and heavy mineral analysis with RAMAN spectroscopy. The interpretation of the data was carried out taking into account the ternary diagrams of Folk [1], Dickinson [2] and Garzanti [3]. The results of the analyses show that the sediments at the mouth of the Sinú and Patía rivers were formed in a tectonic environment of mixed origin between continental block and recycled magmatic arc, where the main source of input are sedimentary and volcanic rocks with wide differences for each margin.