Evolución morfoestructural de las planicies elevadas de El Cuy y Reintería en el antepaís Norpatagónico.

Abstract

This study focuses on the development and uplift of the Rentería and El Cuy plains, located in the northern Patagonian foreland in the northwest of the Río Negro Province, Argentina. To carry out the morphotectonic analysis and determine the influence of isostatic adjustment on the uplift of the landscape, it was necessary to estimate the flexural isostatic response to erosion in the retroarc/foreland sector of the study area. Based on the calculated volume of eroded rock (geophysical relief), the isostatic response of the lithosphere in the Andean retroarc, including the area of interest, was modeled. The resulting models and their comparison revealed that the morphology of the elevated plains in the Northern Patagonian foreland has been partially controlled by flexural isostatic compensation in response to intensified erosion during the Pliocene-Pleistocene epoch.