Abstract
Measurements of the marine reservoir effect in the Arabian Sea, from the present to 8685 cal ВС, make it possible to discuss the 14C calibration of marine biomineralisations (shells, otoliths, bioapatite). From the present to 4560 cal ВС, the ΔR (210 ± 15) remains constant in the north-west of Arabian Sea allowing us to insert the 14C dates of many anthropic sites from the coast of the gulf of Oman into classical chronologies. During the early to mid-Holocene, the high amplitude in sea surface temperature variation linked to intensified upwelling activity lead to higher values of the marine reservoir effect of up to 700 years from 6475 to 7305 cal ВС.
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