2026-05-05T10:09:58Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/410192021-06-23T10:28:39Zcom_10324_1161com_10324_931com_10324_894col_10324_1318

00925njm 22002777a 4500 dc González Gutiérrez, Rosa Blanca author Santos González, Javier author Gómez Villar, Amelia author Alonso Herrero, Eduardo author García de Celis, Alipio José author Cano, Martín author Redondo Vega, José María author 2017 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. Acta Carsologica, 2017, vol. 46, n. 2-3. p. 165–178 1580-2612 http://uvadoc.uva.es/handle/10324/41019 10.3986/ac.v46i2-3.5001 Glaciokarst landforms in the Sierra de los Grajos, Babia and Luna natural park (Cantabrian Mountains, NW Spain)