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Marine Radiocarbon Reservoir Effect of Coastal Waters Off Cape Verde Archipelago

Published online by Cambridge University Press:  18 July 2016

António M Monge Soares ,
José M Matos Martins  and
João Luís Cardoso
António M Monge Soares*
Affiliation:
Laboratório de Radiocarbono, Grupo de Química Analitica e Ambiental, Instituto Tecnológico e Nuclear, Estrada Nacional 10, 2686-953 Sacavém, Portugal.
José M Matos Martins
Affiliation:
Laboratório de Radiocarbono, Grupo de Química Analitica e Ambiental, Instituto Tecnológico e Nuclear, Estrada Nacional 10, 2686-953 Sacavém, Portugal. Universidade do Algarve, Faculdade de Ciências e Tecnologia (Campus de Gambelas, Faro), Portugal.
João Luís Cardoso
Affiliation:
Universidade Aberta (Lisboa), Centro de Estudos Arqueológicos do Concelho de Oeiras, Câmara Municipal de Oeiras, Fábrica da Pólvora de Barcarena, Estrada das Fontainhas, 2745-615 Barcarena, Portugal.
*
Corresponding author. Email: amsoares@itn.pt.
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Abstract

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Quantification of the marine radiocarbon reservoir effect (ΔR) is essential in order to calibrate conventional 14C dates from marine shell samples with reliability. ΔR also provides information concerning the intensity of coastal upwelling in marine regions influenced by this phenomenon. 14C ages of closely associated marine samples (mollusk shells) and terrestrial samples (goat bones) from São Vicente Island, Cape Verde Archipelago, permitted the first calculation of the marine 14C reservoir effect in this region. A ΔR weighted mean value of 70 ± 70 14C yr was obtained. This value is in accordance with the previously published oceanographic conditions of the region indicating the existence of a seasonal active upwelling regime.

Type
Methods and Developments
Information
Radiocarbon , Volume 53 , Issue 2 , 2011 , pp. 289 - 296
Copyright
Copyright © The American Journal of Science 

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