The CO2 record for air bubbles from the Byrd Station ice core suggest a drawdown in the ocean-atmosphere carbon reservoir during the early Holocene. Such a drawdown would require a corresponding increase in the CO3= ion concentration in the deep sea. We report here the results of a search in Atlantic sediments for evidence that the lysocline showed a corresponding deepening. While both the pteropod and the calcite preservation records we have obtained are consistent with expectation, they are not conclusive.

Supplement to: Broecker, Wallace S; Lao, Yong; Klas, Mieczyslawa; Clark, Elizabeth; Bonani, Georges; Ivy, Susan; Chen, Chin (1993): A search for an early Holocene CaCO3 preservation event. Paleoceanography, 8(3), 333-339