Holocene aeolian dunes in the National and Natural Parks of Doñana (SW Iberia): Mapping, geomorphology, genesis and chronology

Goy, José Luis, Zazo, Caridad, Dabrio, C. J., Martínez-Graña, Antonio Miguel, Lario, Javier, Borja, Francisco, Bardají, T., C. Borja y F. Díaz del Olmo . (2021) Holocene aeolian dunes in the National and Natural Parks of Doñana (SW Iberia): Mapping, geomorphology, genesis and chronology. Geomorphology 398: 1-20 (2022)

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Título Holocene aeolian dunes in the National and Natural Parks of Doñana (SW Iberia): Mapping, geomorphology, genesis and chronology
Autor(es) Goy, José Luis
Zazo, Caridad
Dabrio, C. J.
Martínez-Graña, Antonio Miguel
Lario, Javier
Borja, Francisco
Bardají, T.
C. Borja
F. Díaz del Olmo
Materia(s) Geología
Abstract The dune fields of the National and Natural Parks of Doñana are considered one of the most outstanding dune fields inWestern Europe. They are located at thewest margin of the Guadalquivir river estuary. The accumulation of aeolian sands partly blocks the connection between theample Guadalquivir River estuary and the Gulf of Cádiz in the Atlantic Ocean. The sand units forma large oval dome, the “Abalario Dome”which connectswith the large Doñana Spit Barwhere dune systems accumulated aswell, at least in part coevally with the spit growth. Themost frequent dune morphologies are parabolic or transverse. The degree of activity was classified as stable, semiactive and active. Most stable dunes concentrate on the Abalario Dome, whereas active dunes occur mainly on the Doñana spit bar. Relative chronology was established from the superposition of dune Systems and Subsystems deduced from photogeology coupledwith field surveys, orthophotos, and oblique and 3D images. Sampling and radiogenic dating (Optically Stimulated Luminescence-OSL) allowed to date eight dune Systems named as Systems I to VII plus an additional CS, which is a laterally equivalent to part of S IV, V and VI. The proposed ages are: System I, age 11.1 38 to 9.5 ky BP, perhaps extending to 8.5 ky BP. System II, 8.2 to 6.1 ky BP. System III, 5.9 to 2.6 ky BP. 39 System IV, 2.6 to 1.6 ky BP. System V, 1.6 to 1.3 ky BP. System VI, 1.2 to 0.7 ky BP. System VII, 0.7 to 40 0.15 ky BP. The age of the Complex System is 2.2 to 0.15 ky BP. Additionally, it was concluded that genesis of the somewhat-different Complex System(CS)was related to the increased accumulation space created by movements (sliding) along the Mazagón and Torre del Loro faults following major regional seismic activity.
Palabras clave geomorphological analysis
coastal dunes
Holocene
chronology
Guadalquivir Basi
Editor(es) Elsevier
Fecha 2021-12-01
Formato application/pdf
Identificador bibliuned:grupinvestGAMA-Articulos-Jlario-0024
http://e-spacio.uned.es/fez/view/bibliuned:grupinvestGAMA-Articulos-Jlario-0024
DOI - identifier http://dx.doi.org/10.1016/j.geomorph.2021.108066
ISSN - identifier 0169-555X
Nombre de la revista Geomorphology
Número de Volumen 398
Página inicial 1
Página final 20
Publicado en la Revista Geomorphology 398: 1-20 (2022)
Idioma eng
Versión de la publicación acceptedVersion
Tipo de recurso Article
Derechos de acceso y licencia http://creativecommons.org/licenses/by-nc-nd/4.0
info:eu-repo/semantics/openAccess
Tipo de acceso Acceso abierto
Notas adicionales This is the Accepted Manuscript of an article published by ELSEVIER in "Geomorphology" on 6 december 2021, available online: http://dx.doi.org/10.1016/j.geomorph.2021.108066
Notas adicionales Este es el manuscrito aceptado de un artículo publicado por ELSEVIER en "Geomorphology" el 6 diciembre 2021, disponible en línea: http://dx.doi.org/10.1016/j.geomorph.2021.108066

 
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Creado: Thu, 02 Jun 2022, 20:46:32 CET