High Pressure Solubility of Calcium Carbonate in Seawater

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Science  15 May 1964:
Vol. 144, Issue 3620, pp. 840-841
DOI: 10.1126/science.144.3620.840


The saturation concentration of calcium carbonate, equilibrated with aragonitic oolites, is about 2.7 times larger after exposure to 1000 atmospheres than it is when saturation is achieved at 1 atmosphere. This sugests that deep ocean waters may be undersaturated with calcium carbonate, in which case the alkalinity of the oceans would increase as sinking calcareous organisms dissolve.