Indicadores de actividad neotectónica durante el Holoceno Reciente en el P.N. de Doñana (SO, España)
- Juan J.R. Villarías-Robles
- A. Rodríguez-Ramírez
- S. Celestino Pérez
- C. Contreras (
- Álvaro León
- Enrique Flores Hurtado
- González Díez, Alberto (coord.)
Editorial: PubliCan-Ediciones ; Universidad de Cantabria
ISBN: 978-84-86116-54-5
Año de publicación: 2012
Páginas: 289-292
Congreso: Reunión Nacional de Geomorfología (12. 2012. Santander)
Tipo: Aportación congreso
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