authigenesis

geology

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June 18, 2026

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Authigenesis is the geological process where minerals form within a sedimentary rock after it has been deposited. These authigenic minerals, such as calcite, halite, and gypsum, develop in situ due to specific geochemical conditions at the depositional site. This contrasts with detrital minerals, like quartz and feldspar, which are transported to the site as fragments. Authigenesis is part of diagenesis, the broader set of processes that alter sediments after deposition, eventually leading to lithification and the formation of solid sedimentary rock.12

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lithification
…pores; these reactions, collectively termed authigenesis, may form new minerals or add to others already present in the sediment. Minerals may be dissolved and redistributed into nodules and other concretions, and minerals in solution entering the sediment from another area may be deposited or may react with minerals already present.…
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…pores; these reactions, collectively termed authigenesis, may form new minerals or add to others already present in the sediment. Minerals may be dissolved and redistributed into nodules and other concretions, and minerals in solution entering the sediment from another area may be deposited or may react with minerals already present.…
Read More