Caracterización de las facies, ambientes sedimentarios y procesos de depósito en el sector Suroccidental de la cuenca de Loja-Polígono 1

Abstract

Abstract: The present degree work covers the study of sedimentary environments, facies and deposition processes in the southwestern area of the Loja Basin. For this study, a polygon was defined which is located south of Ecuador, in the province of Loja, at the southwestern edge of the basin, between the neighborhoods: El Plateado, Ciudadela Victoria, Tierras Coloradas, Eucaliptos and Bolonia. Within the polygon there are formations such as San Cayetano, La Banda and Belén, which provide specific characteristics such as: lithologies, minerals, microfossils that help identify the facies, environments and processes that occurred for their deposition. In addition to the lithological study, a biostratigraphic study was carried out where plantonic foraminifera were determined that were located in the fine strata of the Fm. The Band and Fm. Belen. These microfossils are of two types: Trochaminoids (Agglutinated) and Spikes (Nodosarideans). With the lithofacies studied, it was possible to corroborate that the Loja basin has a lacustrine and fluvial deposition environment that was mentioned by (Hungerbühler, et al., 2002)