|Geologic age||Middle Pennsylvanian|
Sedimentary > Clastic > Mudstone > Shale (Bed)
Sedimentary > Carbonate > Limestone (Bed)
|Comments||Named for the town of Lenapah, Nowata Co, OK, Chautauqua platform. Occurs near the KS State line entirely east of the Verdigris River. Is the cap rock of most of the hills in northeast part of the Nowata quadrangle. Consists of a single bed of fossiliferous limestone which, when unaltered, is a dense, blue, and partly crystalline usually containing much fossils, especially brachiopods. Has little or no chert. Thickness of the formation is approximately 20 ft in the quarry 3 mi north of Lenapah; at Nowata, is 6-8 ft thick; less than 30 inches thick south of Nowata. (Ohern, 1910).|
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.
Marcher, M.V., and Bingham R.H., 1971, Reconnaissance of the water resources of the Tulsa quadrangle, northeastern Oklahoma: Oklahoma Geological Survey, Hydrologic Atlas 2, scale 1:250,000, 4 sheets. (Geology on sheet 1 compiled by M.V. Marcher, in 1969.)
Cederstrand, J.R., 1996k, Digital geologic map of Tulsa quadrangles, northeastern Oklahoma: U.S. Geological Survey Open-File Report 96-380, (2 diskettes), URL address is: http://ok.water.usgs.gov/gis/geology
Ohern, D.W., 1910, The stratigraphy of the older Pennsylvanian rocks of northeastern Oklahoma: Okla St Univ, Research Bull., 4; Abst, Geol. Soc. Am., Bull. 22: pp. 720-721.