Abstract
WHEN molluscs secrete their shells, the δ18O in the shell is a function only of the temperature and of the δ18O in the water1–4. Thus one can compute the temperature at which an ancient shell was formed by measuring its δ18O value if one assumes that of the water in which it grew. For Pleistocene samples there has been a heated discussion as to the degree of change in the δ18O of the sea5–7.
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MAGARITZ, M., KAUFMAN, A. Changes in the Isotopic Composition of East Mediterranean Seawater during the Holocene. Nature 243, 462–464 (1973). https://doi.org/10.1038/243462a0
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DOI: https://doi.org/10.1038/243462a0
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