1. Geol. of North Am.;Arbenz,1989
2. Arkansas Geological Survey 2015 Subsurface stratigraphic chart of South Arkansas http://www.geology.ar.gov/energy/oil_prodarea.htm
3. U.S. Geol. of North Am.;Autin,1991
4. Late Jurassic contemporaneous faults in North Louisiana and South Arkansas;Bishop;Bull. Am. Assoc. Pet. Geol.,1973
5. Late Pleistocene evolution of the lower Mississippi River valley, southern Missouri to Arkansas;Blum;Geol. Soc. Am. Bull.,2000