Calcite: Rates of Dissolution in a Vertical Profile in the Central Pacific

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Science  23 Dec 1966:
Vol. 154, Issue 3756, pp. 1542-1544
DOI: 10.1126/science.154.3756.1542


Rate of dissoluton of calcium carbonate (calcite) was determined for a vertical profile 5000 mizeters deep in the central Pacific by measuring the loss of weight of optical calcite spheres arrayed on a mooring. Waters of the Pacific are undersaturated in all but the upper several hundred meters. A sharp increase in the rate of dissolution occurs at a depth of about 3700 meters, which corresponds closely to the depth below which calcite hias been dissolved from the sediments