%0 Journal Article
%A Zazo Cardeña , Caridad
%A Goy Goy, José Luis
%A Dabrio González, Cristino José
%T Quaternary marine terraces on Sal Island (Cape Verde archipelago)
%D 2007
%@ 0277-3791
%U https://hdl.handle.net/20.500.14352/49378
%X The Quaternary sedimentary record of Sal Island includes marine and related aeolian and alluvial fan deposits. The substratum of theisland is volcanic, with ages between 25 and 0.6 Ma. Quaternary marine units generally occur as raised marine terraces forming a broadstaircase between elevations of 55–60m and present sea level. Terraces include a basal conglomerate overlaid by calcarenite; both hostcorals, algae and molluscs.A chronostratigraphic framework for the Middle Pleistocene to Holocene units has been generated based on a geomorphologic map ofthe Quaternary landforms and associated deposits and morphosedimentary analysis, with support of laboratory dating: U-series byTIMS in corals, 14C analyses, palaeomagnetic measurements, and K/Ar ages from other literature. U-series dating of corals from marineterraces provides benchmarks for the Last Interglacial (Oxygen Isotope Substage 5e) and Holocene deposits. The present elevation of themarine terraces and their staircase arrangement suggest a change in vertical movement trend around 330 ka from an uplift to eithersubsidence or stabilization.
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