catagenesis


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Related to catagenesis: kerogen

catagenesis

 [kat″ah-jen´ĕ-sis]
involution or retrogression.

in·vo·lu·tion

(in'vō-lū'shŭn),
1. Return of an enlarged organ to normal size.
2. Turning inward of the edges of a part.
3. In psychiatry, mental decline associated with advanced age.
Synonym(s): catagenesis
[L. in-volvo, pp. -volutus, to roll up]

in·vo·lu·tion

(in'vŏ-lū'shŭn)
1. Return of an enlarged organ to normal size.
2. Turning inward of the edges of a part.
3. psychiatry Mental decline associated with advanced age.
Synonym(s): catagenesis.
[L. in-volvo, pp. -volutus, to roll up]
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References in periodicals archive ?
At the same time, within the range of catagenesis stages cyclicity is observed in the changes of both geochemical parameters, one of which ([[delta].sup.13]C) in fact fixes the catagenesis stages of the Bazhenov Suite organic matter, the other (Eu) reflects, apparently, the intensity of catagenesis products interaction with the mineral component of sediments with the changing of the oxidation-reduction environment in the sedimentary rock masses in the process of catagenesis [11].
The dynamics of changes in the distribution of europium and [DELTA] [sup.13]c during the catagenesis of sapropelites in the Bazhenov Suite of Western Siberia
Notwithstanding the author's reluctantly positive sense of catagenesis, the world model he has created here is not only unstable, but is actually in perpetual disequilibrium.
The idea juggler: new thoughts, new approaches, new words to tackle old problems
At greater depths, microbial action decreases as thermogenic production increases with the onset of catagenesis (subsequent to diagenesis at shallower depths [8]).
Improvements in Drill-Core Headspace Gas Analysis for Samples from Microbially Active Depths
Vitrinite reflectance values indicate mature to overmature organic matter in the catagenesis stage (1.61-3.7%; Table 2), suggesting oil-generation to gas-generation window.
Mineralogy and shale gas potential of lower Silurian organic-rich shale at the southeastern margin of Sichuan basin, South China

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