An example of diagenesis is when a buried body of shale undergoes differential stress, which causes clay minerals to realign and produce slate.
Diagenesis can be defined as a physical and chemical processes that causes a change in sedimentary materials such as shale into sedimentary rock at relatively low temperatures and pressure, usually after deposition but before its final lithification.
In geology, a good example of diagenesis is the physical process that involves a buried body of shale that undergoes differential stress, which causes clay minerals to realign and produce slate.
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