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compaction
Changes in sediments during diagenesis
Compaction effect
[3]
) is a change in sediment during diagenesis. Due to the continuous thickening of overlying sediments, the water content of loose sediments decreases under heavy load pressure, resulting in dehydration, volume reduction, porosity reduction, and the effect of saddle dense rock. For example, fine ooze deposits can be compacted into dense clay rocks.
[1]
- Chinese name
- compaction
- Foreign name
- Compaction effect [3]
- Also known as
- compaction
- Generation stage
- In the diagenetic process
- causation
- The increasing thickening of the overlying material increases the hydrostatic pressure
- Shadow resonance
- The sediment dehydrates and shrinks in volume
catalogue
Compaction effect
[3]
Also known as compaction. It is caused by the continuous thickening of the overlying material during the diagenetic process
Hydrostatic pressure
Increase; Or by the pressure of the crust movement, the pores of the sediment shrink, the thickness becomes thin, and the role of hard sedimentary rock.
Under the action of compaction, the sediment often appears dehydration, volume reduction, density increase and so on. In folded mountain belts, some huge thrusts, fold systems, and even slab splits may have been produced by compaction while the rocks were still in an unconsolidated state. In addition, differential compaction often thickens and thinns the shale series with sandstone lenses, arches the overlying sediments of consolidated rocks, and causes the fishtail bifurcations of coal seams. The large-scale differential compaction is the decisive factor for the development of overlying vault of buried hill.
[2]
