Our good friend and cousin, Lee Lybarger, submitted this photo and the accompanying description of this unique geological phenomenon.
Age: Pennsylvanian Period, Desmoinesian Series
Distribution: West-central Arkansas, Arkansas River Valley; eastern Oklahoma
Geology: The Hartshorne Sandstone is a brown to light-gray, massive, frequently cross-bedded, medium-grained sandstone. It is the first continuous sandstone underlying the Lower Hartshorne Coal. The formation is a prominent ledge-former under favorable structural conditions. A few fragmental plant fossils have been noted in the formation. The Hartshorne Sandstone rests with minor unconformity on the Atoka Formation. The unit's thickness ranges from about 10 to 300 feet.
Original reference: J. A. Taff, 1899, U. S. Geol. Survey 19th Ann. Rept., pt. 3, p. 436
Type locality: Named for exposures near Hartshorne, Pittsburg County, Oklahoma
Lee further added: "If anyone knows how the Hartshorne name was attached to this particular sandstone, please share it with us."
I suspect that this geological formation was named after the town of HARTSHORNE and, by connection, Charles Hartshorn. An account of his life may be found on the NOTABLES page.
I might add that the town of Hartshorne, Oklahoma was founded on the coal mining industry which was made possible only because of the railroad that Charles Hartshorne brought to Pittsburg County, Oklahoma in the late 1880's.
During the Great Flood of about 3000 B.C. which occured about 1660 years after God created the world, the entire appearance of the earth was radically changed. The waters which covered the earth laid down layers of sand and silt, covering the plants and animals that existed. Layers of earth covered all the organic life, sealing it and creating coal and petroleum products as well as the fossils. The coal fields of Pittsburg county have been worked ever since the railroad made mining a viable industry.
Derick S. Hartshorn - ©2008