Dornick Hills Group

ARDMORE-SHERMAN- Series of tan shales with limestones, limestone conglomerate and sandstone. Top of "Otterville Limestone" down to base of "Lake Ardmore Sandstone;" thickness 1,800 feet. Occurs in the ARDMORE BASIN.
State Oklahoma
Name Dornick Hills Group
Geologic age Middle Pennsylvanian
Lithologic constituents
Sedimentary > Clastic > Mudstone > Shale (Bed)
Sedimentary > Clastic > Conglomerate (Bed)
Sedimentary > Carbonate > Limestone (Bed)
Sedimentary > Clastic > Sandstone (Bed)
Comments Named as a formation in the Ardmore basin in southern OK in the S. Oklahoma folded belt province. Consists of a series of bluish, tan, and rarer reddish and brown shales, with limestones, limestone conglomerates and sandstones. Maximum observed thickness of about 4,000 ft in north edge of Love Co; decreases northward to about 2,500 ft near town of Ardmore; decreases further to less than 1,500 ft near Glenn village. (Tomlinson, 1929).

Heran, W.D., Green, G. and Stoeser, D.B., 2003, A Digital Geologic Map Database of Oklahoma: USGS Open File Report 03-247, scale 1:250,000.

Hart, D.L., 1974, Reconnaissance of the water resources of the Ardmore and Sherman quadrangles, southern Oklahoma: Oklahoma Geological Survey, Hydrologic Atlas 3, scale 1:250,000, 4 sheets. (Geology on sheet 1 compiled by D.L. Hart, and R.O. Fay, in 1970.)

Cederstrand, J.R., 1996a, Digital geologic map of Ardmore-Sherman quadrangles, south-central Oklahoma: U.S. Geological Survey Open-File Report 96-370, (3 diskettes), URL address is:

Tomlinson, C.W., 1929, The Pennsylvanian system in the Ardmore Basin: Oklahoma Geological Survey Bulletin 46.

NGMDB product
Counties Carter - Johnston - Love - Murray