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Holocene evolution of the Xagó dune field (Asturias, NW Spain) reconstructed by means of morphological mapping and ground penetrating radar surveys

Flor-Blanco, G., Rubio-Melendi, D., Flor, G., Fernández-Álvarez, J.P. and Jackson, D.W.T. (2016) Holocene evolution of the Xagó dune field (Asturias, NW Spain) reconstructed by means of morphological mapping and ground penetrating radar surveys. Geo-Marine Letters, 36 ((1)). pp. 35-50. [Journal article]

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DOI: DOI: 10.1007/s00367-015-0427-1

Abstract

In the aeolian dune field of Xagó, morphological mapping and GPR profiles were obtained to propose an evolutionary sequence that was significantly more accurate than what can be inferred from surficial morphologies studies alone. Three successive dune sets were identified: inner (climbing dunes), middle (large transverse ridge and minor elongated dunes) and outer fields (foredune with lee-projection dunes and incipient foredune). The falling sea level since the Flandrian transgression to the present is deduced from the relative position of the dunes, including a prograding tendency. Long intervals of stabilisation are interspersed, during which each dune set is built, and the GPR records reveal that a period of erosion processes occurred in the southern middle field with a subsequent accretion. These results demonstrate the progradation and erosion processes during the Holocene evolution of the dune field, which can be extrapolated to dune fields with the same characteristics in these latitudes.Xagó is one of the places where, stratigraphically, reflectors reveal an erosive surface representing the intermediate event of transgressive or standstill sea level previously undetected.

Item Type:Journal article
Keywords:Holocene dune evolution GPR Xago Astuarius Spain
Faculties and Schools:Faculty of Life and Health Sciences > School of Geography and Environmental Sciences
Faculty of Life and Health Sciences
Research Institutes and Groups:Environmental Sciences Research Institute > Coastal Systems
Environmental Sciences Research Institute
ID Code:34864
Deposited By: Professor Derek Jackson
Deposited On:19 Jun 2016 11:31
Last Modified:17 Oct 2017 16:23

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