A prominent quartz-pebble-bearing sandstone unit crops out at stream level along the East Fork of the White River in Madison County. Detailed geologic mapping indicates that the unit is stratigraphically positioned between the Brentwood and Dye Shale Members of the Bloyd Formation and is not the Greenland Member of the Winslow Fromation as previously supposed. Sedimentary textures and structures of the unit indicate that it was deposited by competent, unidirectional currents flowing in a southerly direction. These currents were related to a broad braided stream system.
Glenn, John M.
"Stratigraphy and Sedimentary Structures of a Middle Bloyd Fluvial Sandstone, Washington and Madison Counties, Arkansas,"
Journal of the Arkansas Academy of Science: Vol. 26
, Article 19.
Available at: http://scholarworks.uark.edu/jaas/vol26/iss1/19