Abstract
Black Sea seasonal entrainment of dissolved oxygen below the chemocline results in a temporary hiatus in which an oxygen induced mass mortality of photosynthetic bacteria initiates their mass sedimentation. During their sedimentation black coloured FeS-rich granules form. The abundance of these granules in the sediments dictates their colour and microlamination pattern.
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Dickman, M., Artuz, I. Mass mortality of photosynthetic bacteria as a mechanism for dark lamina formation in sediments of the Black Sea. Nature 275, 191–195 (1978). https://doi.org/10.1038/275191a0
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DOI: https://doi.org/10.1038/275191a0
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