%0 Journal Article
%A Zazo Cardeña , Caridad
%A Goy Goy, José Luis
%A Hillaire-Marcel, Claude
%A Guillot, Pierre-Yvot
%A Soler Javaloyes, Vicente
%A González Delgado, José Ángel
%A Dabrio González, Cristino José
%A Ghaleb, B.
%T Raised marine sequences of Lanzarote and Fuerteventurarevisited —a reappraisal of relative sea- level changes and verticalmovements in the eastern Canary Islands during the Quaternary
%D 2002
%@ 0277-3791
%U https://hdl.handle.net/20.500.14352/56916
%X Systematic mapping and morphosedimentary analysis of Fuerteventura and Lanzarote Islands supported by laboratorytechniques (U-series mostly by TIMS, 14C analysis and allo-isoleucine measurements on biogenic carbonates from raised marinedeposits, paleomagnetic and a few K/Ar measurements on volcanic formations related to marine deposits) provide a basis forconstraining the age of Late Cainozoic marine units. The most complete sequences of raised marine terraces are found at similarelevations in both islands. They include up to 12 marine terraces (Episodes) at elevations between 0m and 70m above mean sea level(asl). At least six terraces should be of Quaternary age, and more recent than 1.2 Myr. Throughout the whole marine sequence withthe exception of the Holocene terrace, the warm fauna assemblage is characterized by the presence of Ostrea virleti, Nerita emiliana,and Strombus (S. cf. coronatus–S. cf. bubonius). However, there is a major change, highlighted by the disappearance of the first twospecies, below the 8–10m terrace, that could possibly correspond to MIS 11. K–Ar measurements allow an estimate for mean upliftrate of 1.7 cm/ka during the last million years. The present elevation of the Last Interglacial deposits (about 1 and 2masl) showsdiscontinuous vertical movements with possibly a reverse trend since MIS 9 in eastern Canary Islands
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