Sulfate reduction and sulfide deposition in deep-sea sediments from the southwestern Japan Sea |
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| Authors: | Toshiyuki Masuzawa Yasushi Kitano |
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| Institution: | 1. Water Research Institute, Nagoya University, Chikusa-ku, 464, Nagoya, Japan
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| Abstract: | Vertical profiles of total sulfur and organic carbon have been measured in two deep-sea piston cores from the southwestern Japan Sea where sulfate reduction is proceeding within the sediments. The content of total sulfur, most of which is present as pyrite, increases gradually with increasing depth, showing several peaks. The amount of diagenetically deposited sulfide-sulfur is estimated using a steady-state model that considers vertical change in the diffusion coefficient. It is suggested that two-thirds to three-fourths of the observed total sulfur content has been deposited diagenetically. |
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