RT Journal Article
T1 Sea level changes during the last and present interglacials in Sal Island(Cape Verde archipelago)
A1 Zazo Cardeña, Caridad
A1 Goy Goy, José Luis
A1 Hillaire-Marcel, Claude
A1 Dabrio, Cristino J.
A1 González Delgado, José Ángel
A1 Cabero del Río, Ana
A1 Bardají Azcárate, Teresa
A1 Ghaleb, Bassam
A1 Soler Javaloyes, Vicente
AB Last interglacial and Holocene deposits are particularly well developed in the southern parts of Sal Island (CapeVerde Archipelago). They primarily consist of low-elevation (≤2 m above sea level [a.s.l.]) marine depositsmade of a basal conglomerate embedded in carbonate mud, passing upwards to calcarenites. All depositscontain an abundant fauna with corals, algae and molluscs with Strombus latus Gmelin and accompanyingwarm water species of the “Senegalese” fauna. Small scale geomorphological mapping with detailedmorphosedimentary analysis revealed lateral facies changes and imbricate (offlapping) structures that suggestsmall-scale oscillations of paleo-sealevels during high sea stand intervals. U-series measurements (in coralfragments) allowed unequivocal identification of Marine Isotope Substage (MIS) 5.5 units, but were notprecise enough to date the sea level oscillations of the interval. However, geomorphological data andsedimentary facies analysis suggest a double sea level highstand during the peak of the last interglacial.MIS 5.5 age deposits occur at Sal and the Canary Islands at low topographic elevations, between 1 and 2 masl.However, these values are lower than the elevations measured for the correlative terraces outcropping at thewestern tropical Atlantic islands, widely considered to be tectonically stable.Combining the results in this paper with earlier investigations of the “Senegalese” fauna distribution as farnorth as the Mediterranean basin, it is suggested that the last-interglacial oceanic temperatures in this basin, aswell as the temperatures in other islands of the Eastern Atlantic and the coasts of Morocco, were warmer thanmodern temperatures.
PB Elsevier
SN 0921-8181
YR 2010
FD 2010
LK https://hdl.handle.net/20.500.14352/42212
UL https://hdl.handle.net/20.500.14352/42212
LA eng
DS Docta Complutense
RD 2 may 2024