Glaciokarst landforms in the Siera de los Grajos, Babia and Luna natural park (Cantabrian Mountains, NW Spain)
| Autor: | José María Redondo-Vega, Rosa Blanca González-Gutiérrez, Amelia Gómez-Villar, Eduardo Alonso-Herrero, Martín Cano, Alipio J. García de Celis, Javier Santos-González |
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| Rok vydání: | 2017 |
| Předmět: |
010504 meteorology & atmospheric sciences
54 Geografía Glacial landform 2506.07 Geomorfología Geomorfología glaciar Cordillera Cantábrica 010502 geochemistry & geophysics Glacial geomorphology 01 natural sciences Karst geomorphology Glacial period Geomorphology 0105 earth and related environmental sciences Earth-Surface Processes geography geography.geographical_feature_category Landform Geomorfología kárstica Glacier Karst Cantabrian Mountains Moraine Outwash plain Erosion Geology |
| Zdroj: | UVaDOC. Repositorio Documental de la Universidad de Valladolid instname UVaDOC: Repositorio Documental de la Universidad de Valladolid Universidad de Valladolid |
| ISSN: | 0583-6050 |
| DOI: | 10.3986/ac.v46i2-3.5001 |
| Popis: | Producción Científica Landforms resulting from the interaction between paleo-glaciers and karst are studied by using the Sierra de los Grajos (Cantabrian Mountains) as a model. This area contains glacial landforms that have not interested geomorphologists due to their low altitude (Peña Castillo is about 1857 m a.s.l.), the absence of glacial cirques and the scarcity of large moraines. However, the prevalence of groundwater flow and chemical dissolution has favoured the preservation of glacial landforms. Lateral and frontal moraines show three main glacial stages and other minor glacier stabilization phases, with the paleo-ELA oscillating between 1650 and 1760 m. Moraines are combined with depressions and sinks resulting from subglacial karstic drainage. This convergence of forms and processes is an exception in the Cantabrian Mountains, where postglacial erosion has usually eroded the frontal moraines and the proglacial sediments. In the case of the Sierra de los Grajos, despite the underground drainage and preservation of many glacial deposits on karstic landforms, an outwash-plain was formed. These proglacial sediments and others from non-karstified areas filled the depressions of the preglacial terrain located at their edges. The main glaciokarstic landforms have been mapped and a sedimentological analysis of the outwash plain was made in order to reconstruct the glacial dynamics of this area. Ministerio de Economía, Industria y Competitividad - Fondo Europeo de Desarrollo Regional (projects CGL2016-76215-R and CGL2015-65569-R) |
| Databáze: | OpenAIRE |
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