|Geologic age||Middle Pennsylvanian|
Sedimentary > Clastic > Sandstone (Bed)
Sedimentary > Clastic > Mudstone > Shale (Bed)
Sedimentary > Coal (Bed)
|Comments||First published use in Pittsburg Co, OK, in the Arkoma basin. Probably named for the town of Hartshorne. No type locality designated. Occurs in the McAlester coal district in the McAlester quadrangle, and in the Lehigh coal district in the Atoka and Colgate quadrangles. Is the oldest unit mapped. In the McAlester coal district, is a brown to light-gray sandstone 200 ft thick. Near the top, beds are very thick and some are massive, and occur as roughly rounded masses and thick ledges. In lower part, many of the beds are thin and slabby and associated with sandy shales. In the Lehigh district, occurs in the valley of North Boggy Creek; is a brownish fine sandstone which changes to a breccia of chert fragments in brown sandstone matrix. Lies below the Hartshorne coal and is separated from it by thin, variable bed of shale. (Taff, 1899).|
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: http://ok.water.usgs.gov/gis/geology
Marcher, M.V. and Bergman, D.L., 1983, Reconnaissance of the water resources of the McAlester and Texarkana quadrangles, southeastern Oklahoma: Oklahoma Geological Survey, Hydrologic Atlas 9, scale 1:250,000, 4 sheets. (Geology on sheet 1 compiled by M.V. Marcher and D.L. Bergman, in 1971 and revised by R.O. Fay, in 1978.)
Cederstrand, J.R., 1996h, Digital geologic map of McAlester-Texarkana quadrangles, southeastern Oklahoma: U.S. Geological Survey Open-File Report 96-377, (3 diskettes), URL address is: http://ok.water.usgs.gov/gis/geology
Taff, J.A., 1899, Geology of the McAlester-Lehigh coal field, Indian Terri-tory: U.S. Geological Survey, 19th Annual Report, pt. 3, p. 429-456.
|Counties||Atoka - Coal - Latimer - Le Flore - Pittsburg - Pontotoc|