No CrossRef data available.
Published online by Cambridge University Press: 03 July 2025
Radiocarbon (14C) activity in aquatic environments is usually different from that of the atmosphere, the result being that organisms that grow in these different environments will have different 14C ages, even though they are contemporary. This age offset in marine samples is known as the “marine reservoir effect.” The marine calibration curve takes this effect into account as a global approximation, but local variations due to ocean dynamics and other factors must be individually studied and corrected for. With a littoral of more than 11,000 km and a great interest in dating malacological marine samples, Mexico has scarce local reservoir effect studies. Most of the available data come from studies done in the 1960s and 1990s. In this study, we present new reservoir effect corrections for four sites in the Pacific Ocean with positive ΔR values as expected, and one from the Caribbean Sea with a negative average value of ΔR. The results were obtained by dating known-age shells from the malacological collection of the Natural History Museum Felipe Poey, in Havana, Cuba. This new data will be useful to do more precise reservoir effect corrections to malacological samples of the region, with special interest in contexts where it is difficult to date other kinds of organic samples, due to difficulties in their preservation.
Selected Papers from the 2nd Latin American Radiocarbon Conference, Mexico City, 4–8 Sept. 2023