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==Shallow burial (Eogenesis)==
==Shallow burial (Eogenesis)==
This is happen when sediments newly deposited include reworking of sediments by organism (bioturbation), minor compaction and grain repacking, and mineralogical changes.<ref name=Bogg /> Activity of organism such as burrowing, tracking, crawling can destroy primary sedimentary structures but commonly unchange a mineralogical and chemical composition of sediments. This is first stage of diagenesis that only caused by very shallow burial depth. Sediments undergo only very slight compaction and grain rearrangement during early diagenesis.<ref name=Bogg />
This is happen when sediments newly deposited include reworking of sediments by organism ([[bioturbation]]), minor compaction and grain repacking, and mineralogical changes.<ref name=Bogg /> Activity of organism such as burrowing, tracking, crawling can destroy primary sedimentary structures but commonly unchange a mineralogical and chemical composition of sediments. This is first stage of diagenesis that only caused by very shallow burial depth. Sediments undergo only very slight compaction and grain rearrangement during early diagenesis.<ref name=Bogg />
Eogenesis does bring about some important mineralogical changes in siliciclastic sediments such as presipitation of new minerals.<ref name=Bogg /> In marine environment that reducing condition prevail, pyrite may form cement or replace other materials.<ref name=Bogg /> Other importants reaction include formation of chlorite and glauconite. In nonmarine environment, iron-oxides are commonly produced, forming redbeds.<ref name=Bogg />
Eogenesis does bring about some important mineralogical changes in siliciclastic sediments such as presipitation of new minerals.<ref name=Bogg /> In marine environment that reducing condition prevail, pyrite may form cement or replace other materials.<ref name=Bogg /> Other importants reaction include formation of chlorite and glauconite. In nonmarine environment, iron-oxides are commonly produced, forming redbeds.<ref name=Bogg />