Pg. 17-21, pl. 3; F.B. Plummer IN Cheney, M.G., 1948, Abilene Geol. Soc. [Gdbk.] Spring Field Trip, June 11-12, p. 8 (road log). Curry clay [member of Harpersville formation]. Purplish red and greenish red, grading in places into deep maroon. Thickness varies from a few feet to 32 feet depending upon thickness of sand in section above it. Occurs between upper and lower Crystal Falls limestone layers, just above Quinn clay in areas where thick sandstone deposits of Parks Mountain and its probable equivalent, Cisco Lake sandstone, do not occur. [Age is Pennsylvanian (Cisco).]
Named from Curry Farm, 5 mi south and 2.25 mi west of Breckenridge, Stephens Co. central northern TX (Plummer, 1948; Plummer and Bradley, 1949). [The Curry family were pioneers of Stephens County.]

Source: US geologic names lexicon (USGS Bull. 1200, p. 1012).