Evolución morfosedimentaria del sistema aluvial de Valsalada (Leciñena, Los Monegros ) durante el Pleistoceno superior-Holoceno.: aproximación paleoambiental.
- Autores: Carlos Sancho Marcén
- Localización: Geogaceta, ISSN 0213-683X, Nº. 41, 2006, págs. 199-202
- Idioma: español
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- Dialnet Métricas: 2 Citas
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Resumen
A first approach to the palaeoenvironmental significance of the Valsalada (Central Ebro basin) alluvial record, Upper Pleistocene-Holocene in age, is presented starting from geomorhological, sedimentological and radiocarbon data. This morphosedimentary sequence is made up by three evolutionary phases: 1) lacustrine stage (37,050±50 BP) under cool and humid conditions, 2) alluvial stage (from 10,550±80 BP to 3,225±50 BP) related to cold and wet climate and 3) colluvial fans stage (1,640±50 BP) during arid climate with human action influence. The Valsalada alluvial system shows a singular morphosedimentary evolution strongly influenced by climatic changes bearing variations in water dischar ges and hydrological availability in surrounding saline wetlands.
