184
Fig. 7.12. The relationship of
the change in sulphate concentration to the change in total
dissolved carbon dioxide in
Baffin Bay, Texas sediments
when calcium carbonate precipitation is corrected for. The
line is the ideal 1:2 ratio (redrawn from Morse et al. 1992)
Fig. 7.13. The relationship between organic-C and calcium
carbonate in Gulf of Mexico
cold seep communities (redrawn from Arvidson and
Morse, to be published)
7.4
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Interactions of Toxic Metals with Sulphides in Anoxic Sediments
7.4.1
General Considerations
The study of the relationship of toxic metals to sedimentary sulphides has primarily
focused on three major areas. Early observations indicated that the concentrations of