1. The color of red beds—a geological perspective;Blodgett,1993
2. Chapman, D.D., 1982. Sedimentary petrology of the Colton Formation (Upper Paleocene–Eocene), central Utah. Unpublished MS thesis, Ohio State University, 107 pp.
3. The Iron Oxides;Cornell,1996
4. Descriptive paleoclimatology;Fischer;American Journal of Science,1963
5. Clay fractions and colours of some Devonian red beds in the Catskill Mountains, U.S.A.;Friend;Quarterly Journal Geological Society of London,1966