Diagenesis accumulations

Eisenreich SJ, Capel PD, Robbins JA, et al. 1989. Accumulation and diagenesis of chlorinated hydrocarbons in lacustrine sediments. Environ Sci Technol 23 1116-1126. 

An understanding of the retention of sulfur in lake sediments is important for paleolimnological reconstructions, for an understanding of the alkalinity balance of lakes, for determination of rates and pathways of diagenesis, and for an understanding of the dynamics of the microbial loop in sediments. Profiles of rates and forms of S accumulation in sediments may preserve records of past conditions of climate, lake chemistry, or atmospheric de-... 

Diagenesis of Microbially Reduced Sulfur. Postdepositional transformations play an important role in controlling the extent of recycling of microbially reduced S. Pore water profiles from many freshwater systems clearly show that H2S is a short-lived intermediate in sulfate reduction which does not accumulate in sediments (14.16 41-431. However, the conventional paradigm for sulfur diagenesis, in which H2S is initially immobilized by iron monosulfides that later are diagenetically altered to pyrite and elemental S (e.g., 2Q)> does not apply to all freshwater systems. Instead, organic S and CRS (chromium reducible S, which is believed to represent pyrite + S° after preliminary acid distillation to remove AVS), are important initial endproducts of dissimilatoiy reduction. 

The geochemistry of sulfur in coal is largely controlled by sedimentary environments during peat accumulation, as well as by the geologic conditions during diagenesis following peat formation. In low-sulfur coal, peat... 

Mangrove soils. The sample of mangrove paleosoils used for extraction and pyrolysis was collected, from the sabkha, one kilometers inland at a depth of 50 cm. It corresponds to the upper part of the soil (30 cm thick), made from the accumulation of leaves and roots. The TOC of this sample is 8.2 %. Selective diagenesis of organic tissues observed in thin sections of the soil leads to a relative... 

Machel H.G. (1989) Relationships between sulfate reduction and oxidation of organic compounds to carbonate diagenesis, hydrocarbon accumulations, salt domes, and metal sulfide deposits. Carbonates and Evaporites 4,137-151. 

Organic burial efficiency the accumulation rate of organic matter below the active zone of diagenesis divided by the organic matter flux to surface sediments. 

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