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Pleistocene raised marine terraces of the Spanish Mediterranean and Atlantic coasts: records of coastal uplift, sea-level highstands and climate changes

Zazo Cardeña , Caridad and Goy Goy, José Luis and Dabrio, Cristino J. and Bardají Azcárate, Teresa and Hillaire-Marcel, Claude and Ghaleb, B. and González Delgado, José Ángel and Soler Javaloyes, Vicente (2003) Pleistocene raised marine terraces of the Spanish Mediterranean and Atlantic coasts: records of coastal uplift, sea-level highstands and climate changes. Marine Geology, 194 . pp. 103-133. ISSN 0025-3227

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Abstract

Detailed geological mapping, morphostratigraphic, palaeontological and geochronological (uranium-series)
analyses were undertaken on the raised marine terraces and interbedded terrestrial deposits along the Spanish
peninsular and insular Atlantic and Mediterranean coasts. Several sets of Pleistocene shallow-marine to coastal
deposits exposed in a staircase arrangement are interpreted as being emplaced during sea-level highstands coeval with
interglacials or interstadials correlating with marine Oxygen Isotopic Stages (OIS) 5a/5c, 5e, 7, 9/11 and older. Up to
three highstands have been identified in deposits formed during OIS 5e. Close to the end of OIS 5e there is a record of
sudden changes in sea-surface conditions and climate marked by the disappearance of a major proportion of the
warm ‘Senegalese’ fauna, switches from oolitic to non-oolitic facies, and accumulation of boulder beaches. Dating of
the coral Cladocora caespitosa, found in a layer that also contains Strombus bubonius, confirms the occurrence of
warm fauna in the Mediterranean basin during OIS 7, as previously suggested by Hillaire-Marcel et al. (1986), Goy et
al. (1986a,b), Zazo and Goy (1989). Also the occurrence of warm faunas in deposits corresponding to an older
interglacial, probably OIS 9 or 11, in the Balearic Islands suggests similar oceanographic conditions (sea-surface
temperature, assuming constant salinity) during the last interglacial and at least two interglacials of the Middle
Pleistocene in the western Mediterranean.


Item Type:Article
Uncontrolled Keywords:Interglacial; Marine oxygen isotopic stages; Iberian Peninsula; Canary Islands; Balearic Islands
Subjects:Sciences > Geology > Stratigraphic geology
ID Code:10641
Deposited On:12 May 2010 08:20
Last Modified:15 Sep 2010 07:48

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