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Diagenesis kerogen

General scheme of kerogen evolution from diagenesis to metagenesis in the van Krevelen diagram. [Pg.916]

Kerogen The complex mixture of solid organic compounds formed from the diagenesis and catagenesis of soils and marine sediments. [Pg.879]

Reuter, J. H., and Perdue, E. M. (1984). A chemical structural model of early diagenesis of sedimentary humus/proto-kerogens. Mitt. Geol.-Palaon. Inst. 56,249-262. [Pg.141]

Figure 3.5 General scheme of kerogen evolution from diagenesis to metagenesis in the Van Krevelen diagram (from Tissot and Welte, 1984. Reprinted by permission of Springer-Verlag). Figure 3.5 General scheme of kerogen evolution from diagenesis to metagenesis in the Van Krevelen diagram (from Tissot and Welte, 1984. Reprinted by permission of Springer-Verlag).
Residual kerogen is one form of dead carbon and has no potential for oil and gas. Besides kerogen, at the end of diagenesis organic matter comprises a minor amount of free hydrocarbons and related compounds, as synthesized by... [Pg.90]

Similar considerations for ancient metal(loid) uptake or transformations appear quite reasonable for primordial microflora, especially the algae which account for the present ubiquitous distribution of kerogen in shale rocks. (9,10) In general, the fossil deposition record suggests that substantial metal(loid) accumulation also occurred in higher plants which underwent diagenesis to form modern petroleum and coal deposits. (11,12) In many instances, various present-day species of plants are known to both selectively and extensively hyperaccumulate various metal(loid)s... [Pg.424]

By examination of the recent literature as reviewed by Tissot and Welte (1978), one gets the impression that the diagenesis of humic substances to form kerogen is well understood. In effect, many consider kerogen to be formed via condensation mechanisms in which aquatic plant substances are microbially degraded to form soluble monomers that condense to form humic polymers that eventually condense to form kerogen. The melanoidin pathway (sugar-amino acid condensation products) has been invoked by some to explain the structures formed (Nissenbaum and Kaplan, 1972 Hue and Durand, 1973, 1977 Welte, 1973 Nissenbaum, 1974 Stuermer et al. 1978 Tissot and Welte, 1978). [Pg.283]

Hatcher, P. G. (1980). The origin, composition, chemical structures and diagenesis of humic substances, coals and kerogens as studied by nuclear magnetic resonance. Ph.D. dissertation, University of Maryland, 283 pp. [Pg.602]

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See also in sourсe #XX -- [ Pg.126 , Pg.146 , Pg.147 , Pg.148 , Pg.162 ]



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