Análisis petrográfico de las formaciones Chichinales y El Palo en las localidades de Paso Còrdoba y Villa Regina

Abstract

In the sector of the Alto Valle del Río Negro, a series of clastic rocks outcrop assigned to the Chichinales and El Palo formations. They are widely extended in the areas that comprise the General Roca Sheets (Hugo and Leanza, 2001a), Villa Regina (Hugo and Leanza, 2001b) and Neuquén (Rodríguez et al., 2007). The objective of this work is to determine the areas of origin of the Chichinales and El Palo formations and to perform a correlation of two profiles located in the towns of Paso Córdoba and Villa Regina. Respectively, to achieve this objective, stratigraphic profiles, correlation panels and petrographic analyzes were carried out at the levels of interest. These units correspond to the filling of the foreland basin that occurred during the Miocene.