Indicadores de actividad neotectónica durante el Holoceno Reciente en el P.N. de Doñana (SO, España)

• Autores: Juan José R. Villarías Robles, S. Celestino Pérez, Antonio Rodríguez Ramírez, Carmen Contreras Romero, Álvaro León, Enrique Flores Hurtado
• Localización: Avances de la geomorfología en España, 2010-2012: actas de la XII Reunión Nacional de Geomorfología, Santander, 17-20 septiembre de 2012 / coord. por Alberto González Díez, 2012, ISBN 978-84-86116-54-5, págs. 289-292
• Idioma: español
• Títulos paralelos:
  • Neotectonic indicators during Late Holocene in the Doñana National Park (SW SPAIN)
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• Resumen

  • The geomorphological and stratigraphic study of the marshes of Doñana National Park has revealed neotectonic activity during the Late Holocene. Anomalous drainage systems and relict surfaces show alignments in NE-SW and NW-SE directions. Analysis of a 12 m core has allowed us to identify coastal formations that are now buried under 6 m of subsequent clayey sedimentation. A radiocarbon age of 4,410-3,830 cal BP has been obtained for this depth. The identified coastal formations in the core are related to the current dune system of El Abalario, which appears on the topographic surface to the north. We estimate a subsidence rate of 1.5 mm per year south of the NE-SW alignment over the past 4,000 years. To the SE this progressive, relative subsidence has led to the sedimentation of all subsequent formations