CARBONATE ALKALINITY IN THE PORE WATERS OF ANOXIC MARINE SEDIMENTS1
Open Access
- 1 July 1970
- journal article
- research article
- Published by Wiley in Limnology and Oceanography
- Vol. 15 (4) , 544-549
- https://doi.org/10.4319/lo.1970.15.4.0544
Abstract
The principal factor affecting carbonate alkalinity in pore waters of organic‐rich aluminosilicate muds from the central Connecticut coast and a Maine fjord is bacterial sulfate reduction. Measured (titration) alkalinity is equal to that calculated from measured changes in SO42−, Mg2+, Ca2+, and NH4+. As a result of alkalinity increase, pore waters of anoxic sediments can become highly supersaturated with CaCO3. Precipitation of Ca.CO3 may not occur, however, possibly because of the inhibiting effect of dissolved organic matter. No evidence is provided by these sediments for authigenic aluminosilicate formation.Keywords
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