Pg. 25-26. "Elm Creek" limestone. A 6- to 10-inch band of limestone, containing abundant fossils, is present in several places within Cherokee formation in northwestern part of Ottawa County, northeastern Oklahoma, and adjoining area in Kansas. It occurs along Elm Creek, south of the road, in NW/4 SE/4 sec. 10, T. 29 N., R. 22 E.; along Fourmile Creek in central part of sec. 15, T. 29 N., R. 21 E. Also on south slope of a hill in western part of sec. 15, T. 35 S., R. 3 E. (Kansas), a short distance north of Kansas State line. Exact horizon of the limestone could not be definitely determined, but where developed it probably occurs 10 to 20 feet below Bluejacket sandstone; but it was not found in sections where the Bluejacket is known to occur. It is such a thin bed that it may not have been developed except in a few places, and it is possible the above occurrences do not represent same horizons.

Source: US geologic names lexicon (USGS Bull. 896, p. 678).

Pg. 107. †Elm Creek limestone. Abandoned by Oklahoma Geological Survey. Name preoccupied. Weidman's name has not been replaced.
[Rocks reallocated to Desmoinesian McCurtain Shale Member of McAlester Formation of Cherokee Group, according to R.O. Fay, Oklahoma Geol. Survey Open-File Report 2-97, p. 65.]

Source: US geologic names lexicon (USGS Bull. 1200, p. 1244).