2015. "Diagenesis: Dissolution", A Color Guide to the Petrography of Sandstones, Siltstones, Shales and Associated Rocks, Dana S. Ulmer-Scholle, Peter A. Scholle, Juergen Schieber, Robert J. Raine
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This chapter deals with the removal of minerals from sandstones and mudrocks during any stage of diagenesis by pore waters undersaturated with respect to one or more minerals. Dissolution has long been known to be important in “more soluble” rocks, especially carbonates and evaporites, but the past five decades have seen a growing understanding that it is an important process in clastic terrigenous deposits as well. It should not have been a surprise—sandstones and mudrocks can comprise many different minerals, detrital as well as authigenic, that were formed under a wide range of conditions. Subsequent eogenetic, mesogenetic and telogenetic diagenetic environments subject minerals to varied temperatures and pressures and especially to diverse water chemistries that potentially can range from nearly pure meteoric water to hypersaline brines and from acidic to alkaline. As a result, one can find instances of dissolution of almost any mineral. Widespread dissolution of common grains and cements may have a significant impact on the ultimate composition of terrigenous rocks, their porosity and their reservoir potential.