Clastic sediments are lithified into rock by

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Clastic sediments are lithified into rock by both cementation and compaction. Cementation occurs when minerals precipitate out of groundwater and fill the spaces between the sediment grains, acting as a glue to hold the grains together. Compaction occurs as the weight of overlying material squeezes the sediment grains closer together, reducing the volume and increasing the density of the sediment. Together, cementation and compaction transform loose sediment into solid rock.

Clastic Sediments Are Lithified into Rock by