Sediment sulphur cycle

Lein AYu, Ivanov MV (1983) Reduced sulphur accumulation in sediments of marine basins with high rates of sulphate reduction. In The global biogeochemical sulphur cycle, SCOPE 19. Wiley, Chichester, UK, p 413... 

Bottrell S. H. and Raiswell R. (2000) Sulphur isotopes and microbial sulphur cycling in sediments. In Microbial Sediments (eds. R. E. Riding and S. M. Awramik). Springer, Berlin, pp. 96-104. 

Holmer M. and Storkholm P. (2001) Sulphate reduction and sulphur cycling in lake sediments a review. Freshwater Biol. 46, 431-451. 

J0rgensen B. B. (1988) Ecology of the sulphur cycle oxidative pathways in sediments. In The Nitrogen and Sulphur Cycles (eds. J. A. Cole and S. J. Eerguson). Cambridge University Press, Cambridge, pp. 31—63. 

In the Jimmy Member, in a strata-bound setting at the boundary above the clastic Manjeri sediment and before the eruption of the volcanic rocks of the Reliance Fm, the isotopic and textural evidence and C abundance implies that a non-photosynthetic bacterial mat grew, supported by a complex sulphur cycle, and by fermentation of organic debris, methanogenesis and methanotrophy. It should, however, be stressed that the evidence for depth below the... 

An overview of carbon and sulphur cycling in marine sediments... 

Figure 6.3 Notional sulphur speciation in sediments. Profiles of sulphur reservoirs observed in sediments, combined to give a qualitative picture of sulphur cycling processes.

Goldhaber MB, Kaplan IR (1980) Mechanisms of sulfur incorporation and isotope fractionation during early diagenesis in sediments of the Gulf of California. Marine Chem 9 95-143 Habicht KS, Canfield DE (1996) Sulphur isotope fractionation in modem microbial mats and the evolution of the sulphur cycle. Nature 382 342-343... 

Figure 6.5 Electron transfer reactions for sediments (Ruddy, 1993). CHjO.N.P (organic matter) is transformed by bacterial decomposition reactions to bicarbonate in the pore-waters. This is the primary source of electrons (and therefore energy) for the remainder of the sediment redox chemistry. Most of the primary flux of electrons may pass through the sulphur, iron and manganese cycles, but will eventually react with oxygen. Only a small part of the total electron flux will ultimately be buried as reduced minerals.

Fig. 4.18. Relationships of nitrogen, sulphur and carbon cycles in aerobic and anaerobic environments of the biosphere, i.e. atmosphere, ocean and sediments of the ocean ground (modified from Scientific American)...

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