diagenesis
Noun
Meaning
diagenesis (plural diageneses)
(geology) All the chemical, physical, and biological changes sediment goes through during and after lithification, not including weathering or other surface changes.
Examples
In cases where there is a bedding-plane foliation caused by burial metamorphism or diagenesis this may be enumerated as S0a.
It is formed in the sea by sub-microscopic plankton, which fall to the sea floor and are then consolidated and compressed during diagenesis into chalk rock.
Taphonomy and diagenesis Please expand this section citation citation citation citation citation citation further There are many other comparable Cambrian lagerstätten ; indeed such assemblages are far more common in the Cambrian than in any other period.
The soft tissues of organisms are made largely of organic carbon compounds and during diagenesis under reducing conditions only a thin film of carbon residue is left which forms a silhouette of the original organism.