Dissolution kinetics of calcium carbonate in sea water: VI. The near-equilibrium dissolution kinetics of calcium carbonate-rich deep sea sediments

Journal Article · Wed Mar 01 00:00:00 EST 1978 · Am. J. Sci.; (United States)

DOI:https://doi.org/10.2475/ajs.278.3.344· OSTI ID:6768316

Morse, J W

The dissolution kinetics of calcium carbonate from calcium carbonate-rich deep-sea sediments collected in the Indian, Pacific, and Atlantic Oceans were studied using a pH-stat technique in natural ocean and pore water. Sediments from different localities have different reaction orders and rate constants. The rate of dissolution per gram of calcium carbonate changes with the extent of dissolution, and different size fractions have different rates of dissolution per unit surface area at equivalent undersaturations. Good agreement was found between rates of dissolution measured in the laboratory and in the Pacific Ocean water column, when the same size fractions of sediment are used. Dissolution rates in deep-sea sediment pore water are close to those found in deep seawater of similar salinity and phosphate concentration.

• Research Organization: Univ. of Miami, FL
• OSTI ID: 6768316
• Journal Information: Am. J. Sci.; (United States), Vol. 278:3
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
58 GEOSCIENCES
CALCIUM CARBONATES
CHEMICAL REACTION KINETICS
DISSOLUTION
SEAWATER
SOLVENT PROPERTIES
ATLANTIC OCEAN
INDIAN OCEAN
PACIFIC OCEAN
PH VALUE
PHOSPHATES
SALINITY
SEDIMENTS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATES
HYDROGEN COMPOUNDS
KINETICS
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
REACTION KINETICS
SEAS
SURFACE WATERS
WATER
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