The conversion into calendar dates of radiocarbon ages of marine organisms collected on the Andalusian coast of the Gulf of Cadiz - the new Marine20 calibration curve
DOI:
https://doi.org/10.17735/cyg.v39i3-4.117029Keywords:
Marine reservoir effect, Coastal upwelling, Azores Front, Azores Current, HoloceneAbstract
Recently, a new calibration curve (Marine20) for marine radiocarbon dates has been published. Since the modelling carried out for its setting up, as well as the database used, are different from those used for the previous curves (Marine04, Marine09, Marine13), it becomes necessary to calculate new values of the marine reservoir effect (Δ20R) for the oceanic region under study. This work precisely presents the new Δ20R values for the Andalusian coast of the Gulf of Cadiz, determined using the previously published database (i.e. conventional 14C dates of pairs of coeval samples that lived in different carbon reservoirs, namely in the marine and in the terrestrial biospheres). Users of the Marine20 curve are thus provided with the most reliable values so far determined for this Atlantic coast.
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