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Railsback's Some Fundamentals of Mineralogy and Geochemistry Lithification of sediments to form sedimentary rocks, Part II: Possible pathways Part I of this series listed some of the processes of diagenesis, the post-depostional alteration of sediments. The sketches on this page illiustrate how two of those processes, compaction and cementation, can lithify loose porous sediment into less porous solid rock. Starting point: loose sediment Compaction Tangential intergranular contact More compaction Cementation Grains Cementation Intergranular pores More cementation Sutured contact Flattened contact Newly formed crystal of cementing mineral Second generation of cement Newly formed crystal of cementing mineral LBR 1121SedimentLithification03 1/2002 rev. 9/2010
