Análisis paleoambiental de depósitos turbosos holocenos en el sector central del litoral suratlántico español

  1. Manuel Abad de los Santos 1
  2. A.F. Muñoz 1
  3. Francisco Ruiz Muñoz 1
  4. Joaquín Rodríguez Vidal 1
  5. Luis Miguel Cáceres Puro 1
  6. Manuel Pozo Rodríguez 2
  7. María Isabel Carretero León 3
  8. Nieves López González 4
  9. E. Font 5
  10. F. Gómez 1
  11. Antonio Toscano Grande 1
  1. 1 Universidad de Huelva
    info

    Universidad de Huelva

    Huelva, España

    ROR https://ror.org/03a1kt624

  2. 2 Universidad Autónoma de Madrid
    info

    Universidad Autónoma de Madrid

    Madrid, España

    ROR https://ror.org/01cby8j38

  3. 3 Universidad de Sevilla
    info

    Universidad de Sevilla

    Sevilla, España

    ROR https://ror.org/03yxnpp24

  4. 4 Instituto Español de Oceanografía
    info

    Instituto Español de Oceanografía

    Madrid, España

    ROR https://ror.org/00f3x4340

  5. 5 Instituto Dom Luís, Universidade de Lisboa
Journal:
Geotemas (Madrid)

ISSN: 1576-5172

Year of publication: 2012

Issue Title: VIII Congreso Geológico de España, Oviedo, 17-19 de julio, 2012.

Issue: 13

Pages: 730-733

Type: Article

More publications in: Geotemas (Madrid)

Abstract

The multidisciplinary analysis of a peaty coastal outcrop located in the western coast of Doñana National Park (Southeastern Spain) has allowed the reconstruction of palaeoenvironmental changes during the Late Holocene, with an initial transition from brackish marsh to freshwater lagoon together with a climatic cooling recorded by the appearance of steppe vegetation, and a subsequent evolution to a peatland by the absence of drainage due to the closure of marine connection. The end of this sequence coincides with the first historical tsunami studied in the region (218-209 BC), and the beginning of a new coastal progradation phase. A later erosive event and the subsequent marine invasion led the colonization of the exposed basal clay by boring bivalves Barnea candida. This coastal sector would have been submerged for at least 4 year according to the length and occurrence density of the B. candida perforations. During a final stage of coastal progradation these deposits were covered by sandy beach facies until its recent exposure due to the action of winter storms.