Excess dissolved Ca in the deep ocean: a hydrothermal hypothesis (original) (raw)

Earth and Planetary Science Letters, 1998

Abstract

Variations in seawater alkalinity and dissolved calcium provide information essential to establishing the integrated deep ocean calcium carbonate dissolution flux. High-precision Ca measurements reported here confirm earlier suggestions that the deep ocean contains higher levels of dissolved Ca than expected from calcium carbonate dissolution only. I propose that the mid-depth Ca excess is a manifestation of the circulation of seawater

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