RT Journal Article
T1 Cambios en la dinámica litoral y nivel del mar durante elHoloceno en el Sur de Iberia y Canarias Orientales
A1 Zazo Cardeña, Caridad
A1 Dabrio, Cristino J.
A1 Goy Goy, José Luis
A1 Bardají Azcárate, Teresa
A1 Ghaleb, B.
A1 Lario, Javier
A1 Hoyos, M.
A1 Hillaire-Marcel, Claude
A1 Sierro, Francisco Javier
A1 Flores, José-Abel
A1 Silva Barroso, Pablo Gabriel
A1 Borja, Francisco
AB The interaction between global factors ("global" glacio-eustatic sea-level rise) and regional factors(tectonic trend, oceanographic factor) is analyzed in different areas of the Iberian and Canary Islandlittoral. Sea-level changes and c1imatic variations are stated for the Mediterranean and Atlantic littorals,with different tidal ranges and tectonic trends. Different stages can be envisaged in the coastal evolutionof almost all the analyzed areas from the beginning of Holocene (10.000 BP): at ca. 7.000 BP (Flandrianmaximum) 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 themediterranean uplifting areas, whilst in the atlantic subsiding one starts the aggradation processes in theformerly open estuaries, an also from ca.4,OOO BP development of spit-bar system. A second progradationphase ofthe spit bars systems occurs between 2,400 and 500 BP both in Almería and Cádiz Gulf wherea change from aggradation to progradation takes place in the estuary environments, and with a changein the direction of longshore 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 tonowa marked in crease of coastal progradation in all littorals is observed. Climatic interpretations led tocorrelate anticyclonic conditions (as it happened during Little Ice Ages) with the growing of spit barsystems and progradation, while low pressure conditions (as during Medieval Warm Period) coincideswith no progradation. In the Canary Islands, the development of storm ridges at ca. 3,500 BP can becorrelated with an intensification of trade winds.
PB Sociedad Geológica de España
SN 0213-683X
YR 1996
FD 1996
LK https://hdl.handle.net/20.500.14352/56832
UL https://hdl.handle.net/20.500.14352/56832
LA spa
DS Docta Complutense
RD 7 may 2024