Cambios en la dinámica litoral y nivel del mar durante el Holoceno en el Sur de Iberia y Canarias Orientales

Zazo, C., Dabrio, C.J., Goy, J.L., Bardají, T., Ghaleb, B. y Lario, J. . (1996) Cambios en la dinámica litoral y nivel del mar durante el Holoceno en el Sur de Iberia y Canarias Orientales. Geogaceta, Nº. 20, 7, 1996, págs. 1679-1682

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Título Cambios en la dinámica litoral y nivel del mar durante el Holoceno en el Sur de Iberia y Canarias Orientales
Título paralelo Changes in littoral dynamics and sea level in southern Iberia and Canary Istands during the Holocene.
Autor(es) Zazo, C.
Dabrio, C.J.
Goy, J.L.
Bardají, T.
Ghaleb, B.
Lario, J.
Materia(s) Geología
Abstract The interaction between global factors tglobal" glacio-eustatic sea-leve/ rise) and regional factors (tectonic trend, oceanographic factor) is analyzed in different areas of the lberian and Canary lsland littora/. Sea-leve/ changes and climatic variations are stated for the Mediterranean and Atlantic littora/s, with different tidal ranges and tectonic trends. Different stages can be envisaged in the coastal evolution of a/most ali the analyzed areas from the beginning of Holocene (10.000 BP): at ca. 7.000 BP (Flandrian maximum) with a change from open estuaries to aggradational processes (Cádiz Gulf, subsiding area), basal peat (Valencia Gulf, subsiding area) and development of microcliffs (Mediterranean uplifting areas). From 7,000 to 2,700 BP a first progradation phase with development of spit bars took place in the mediterranean uplifting areas, whilst in the atlantic subsiding one starts the aggradation processes in the formerly open estuaries, an a/so from ca.4,000 BP development of spit-bar system. A second progradation phase ofthe spit bars systems occurs between 2,400 and 500 BP both in Almería and Cádiz Gulf, where a change from aggradation to progradation takes place in the estuary environments, and with a change in the direction of /ongshore drift (Mediterranean) and prevailing winds (both areas) at ca.2,400 BP. At ca. 1,200 BP a sudden paleogeographic change took place in estuary environments. From 500 BP up to now a marked increase of coastal progradation in ali littorals is observed. Climatic interpretations /ed to corre/ate anticyclonic conditions (as it happened during Little Ice Ages) with the growing of spit bar systems and progradation, while low pressure conditions (as during Medieval Warm Period) coincides with no progradation. In the Canary lslands, the development of storm ridges at ca. 3,500 BP can be corre/ated with an intensification of trade winds.
Palabras clave Southern Iberia
Canary lslands
Holocene
sea-leve/ changes
climate
aggradationprogradation
ongshore drift-prevailing winds
Editor(es) Sociedad Geológica de España
Fecha 1996
Formato application/pdf
Identificador bibliuned:grupinvestGAMA-Articulos-Jlario-0029
http://e-spacio.uned.es/fez/view/bibliuned:grupinvestGAMA-Articulos-Jlario-0029
ISSN - identifier 0213-683X
Nombre de la revista Geogaceta
Número de Volumen 20
Número de Issue 7
Página inicial 1679
Página final 1682
Publicado en la Revista Geogaceta, Nº. 20, 7, 1996, págs. 1679-1682
Idioma spa
Versión de la publicación publishedVersion
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

 
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