El glaciar de Cuerpo de Hombre (Sierra de Béjar, Sistema Central Español) durante la deglaciación: génesis primaria del till supraglaciar de Los Hermanitos

Abstract

During the period of deglaciation of the last glacial cycle, a rock avalanche tooks place in the cliffs of Los Hermanitos (Cuerpo de Hombre Valley, Sierra de Béjar). The material displaced during the avalanche fells over the ice, was transported towards the glacier front and later on deposited as a supraglacial meltout till. The origin of the avalanche is the result of a decompression in the slopes of the valley after they have been liberated of the glacier ice (paraglacial stress relaxation). Based on geomorphological data and the implementation of a GIS, the reconstruction of ice masses during the main glacier stages have been carried out in order to quantify the stress relaxation that produced the collapse