Diagenesis meaning

dī'ə-jĕn'ĭ-sĭs
The process of chemical and physical change in deposited sediment during its conversion to rock.
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The physical, chemical, and biological changes in sediment from the time it is deposited until it is consolidated into sedimentary rock.
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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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(geology) All the chemical, physical, and biological changes sediment goes through during and after lithification, not including weathering or other surface changes.
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