Abstract

This chapter reviews recent advances in understanding the geochemistry and biogeochemistry of sulfur in clastic sediments and sedimentary rocks. Chemical sediments, such as evaporites and hydrothermal precipitates, are not considered. Shales are by far the largest sulfur reservoirs in sedimentary rocks and thus a large part of this chapter is focused on these mudrocks and their precursor sediments. Since the chapter on sulfur-rich sediments appeared in the first edition of the Treatise of Geochemistry, this area has proved to be one of the most exciting areas of contemporary Earth and Environmental Science research.

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