Named as uppermost member (of 5) of Dornick Hills formation (new). Named from excellent outcrops on Pumpkin Creek in SE1/4 sec 19, T6S, R3E, Love Co, OK. No specific type locality designated. Occurs in Ardmore basin of southern OK in S. Oklahoma folded belt province. Consists of medium- to coarse-grained, pure to sandy, nearly barren to quite fossiliferous limestone and 20 ft of shale in secs 10 and 15, T6S, R2E, where member forms a strong topographic ridge and is 70 ft thick. Most distinctive type of limestone found in N1/2 sec 7, T6S, R2E, and in nearly all outcrops between here and Dornick Hills, is very coarsely granular, cross-bedded and rather sandy weathering to a sort of coarse gray calcite sand. On south line of sec 10, T6S, R2E, about 150 ft below the main Pumpkin Creek limestone, is another bed of fossiliferous limestone [also part? of Pumpkin Creek] only 2 ft thick; 400-500 ft lower is a 15 ft stratum of lumpy, chalky limestone closely interbedded with chalky shales, all highly fossiliferous. On south line of sec 10, T6S, R2E, main ledge of Pumpkin Creek member is about 2,000 ft above top of Bostwick member (new) of Dornick Hills formation. Lies 800 ft below top of Devil's Kitchen member (new) of Deese formation. Crinoid stems; high-turreted gastropods; siliceous spicules. Fossil list; geologic map; columnar section. Of Pennsylvanian age.

Source: GNU records (USGS DDS-6; Denver GNULEX).