~Strategies of Sedimentary Rock Classification and Identification~
Dozens of sedimentary rock classification schemes have been proposed over the decades.
The diversity of classification schemes reflects, in part, the complication of sedimentary rocks, but also the fact that different classifications accomplish distinct objectives. For each group of sedimentary rocks (e.g. Clastic, Chemical, Biochemical, etc.) generalized strategies of classification exist that are modified for special purposes.
Contributed by Lynn Fichter