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Plural
diageneses
1
the physical and chemical changes occurring in sediments between their deposition and their consolidation into sedimentary rock
- Diagenesis refers to the physical, chemical, and biological changes that sediments undergo after deposition and before lithification.
- During diagenesis, sediments may experience compaction, cementation, mineral alteration, and the migration of fluids, which ultimately lead to the formation of sedimentary rocks.
- The process of diagenesis can transform loose sediment into solid rock, such as sandstone, shale, or limestone, over geological time scales.
- Diagenetic processes often occur in the shallow subsurface, within a few kilometers of the Earth's surface, where the conditions are conducive to mineral reactions and fluid flow.
- The study of diagenesis provides insights into the history of sedimentary rocks and the environmental conditions present during their formation, as well as their potential as hydrocarbon reservoirs.