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diagenesis

   Also found in: Encyclopedia, Wikipedia, Hutchinson 0.02 sec.
di·a·gen·e·sis  (d-jn-ss)
n.
The process of chemical and physical change in deposited sediment during its conversion to rock.
dia·ge·netic (-j-ntk) adj.
diagenesis [ˌdaɪəˈdʒɛnɪsɪs]
n
1. (Earth Sciences / Geological Science) the sum of the physical, chemical, and biological changes that take place in sediments as they become consolidated into rocks, including compaction and cementation, but excluding weathering and metamorphic changes
2. (Chemistry) Chem recrystallization of a solid to form large crystal grains from smaller ones
diagenetic  [ˌdaɪədʒəˈnɛtɪk] adj
diagenesis  (d-jn-ss)
The process by which sediment undergoes chemical and physical changes during its lithification (conversion to rock). Compaction, leaching, cementation, and recrystallization are all forms of diagenesis. Erosion and metamorphism are not. Oil, gas, and coal form through the diagenesis of organic sedimentary matter.


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Either of the two end-member metallogenic models may apply: oxidizing U-transporting basin fluids reacted with basement graphite to create methane, thus prompting U precipitation during peak diagenesis (Fayek and Kyser 1997); or U-transporting brines percolated deeply in the basement and became part of a protracted series of hydrothermal events (Cuney et al.
Economic geology: then and now by Jebrak, Michel / Geoscience Canada
These compounds are derived from the diagenesis of plant materials (e.
Relationship between composition and toxicity of motor vehicle ... by Mauderly, Joe L. / Environmental Health Perspectives
The dating of ancient bones has been notably unreliable because of diagenesis and isotopic contamination that occur with millennia of environmental exposure.
The remarkable metrological history of radiocarbon dating [II] by Currie, Lloyd A. / Journal of Research of the National Institute of Standards and Technology
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