Incorporation during early diagenesis

They suggested that this could be a major pathway for the incorporation of sulfur into sedimentary organic matter during early diagenesis. 

As already assumed the intramolecular incorporation of sulfur into the organic matter is not a random process (20).The distribution of the sulfur compounds will depend on the chemical capacity of the molecules present during early diagenesis in each kind of organic matter to accept an inorganic sulfur atoms. These two different types of organic matter enable the intramolecular incorporation of sulfur in different molecules, and consequently result in different distribution patterns of organic sulfur compounds. 

The resin fractions of organic sulfur-rich bitumens are for a substantial part composed of monomers with linear, isoprenoid, steroid, hopanoid and carotenoid carbon skeletons connected to each other by (poly)sulfide linkages. These structural units may contain additional intramolecular sulfur linkages. This sulfur-rich geopolymer is also formed by sulfur incorporation into functionalised lipids in an intermolecular fashion during early diagenesis. 

Goldhaber M. B. and Kaplan 1. R. (1980) Mechanisms of sulfur incorporation and isotope fractionation during early diagenesis in sediments of the Gulf of California. Mar. Chem. 9, 95-143. 

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