56 



THE PERMO-CARBONIFEROUS RED BEDS OF 



' ' The line of outcrop of the Day Creek in Oklahoma is not continuous. Never- 

 theless it is found in numerous localities, and on account of its distinctive lithological 

 appearance it is always easily recognizable. It is displayed on many of the hills of 

 Woodward County, not only north of the Cimarron, but also between the Cimarron 

 and the North Canadian, and south of the latter stream. In Blaine County it 

 forms the caps of a number of the prominent hills, notably the Red Hills between 

 Geery and Watonga. South of the South Canadian River, 

 in Caddo County, the dolomite covers the Whitehorse 

 Buttes southwest of Bridgeport, and outcrops southwest- 

 ward as far as the headwaters of Cobb Creek and on the 

 west side of the creek past Colony. In the vicinity of 

 Mountain View, in the valley of Washita River, a ledge of 

 dolomite appears at the same general level as that occu- 

 pied by Day Creek, and another dolomite ledge in the hills 

 north of Harrison may provisionally be referred to this 

 horizon." 



In a recent paper Beede " states as to the eastern 

 outcrop of the Neva limestone in Oklahoma which 

 he regards as marking the Permian horizon : 



"So far as the evidence has been worked out it seems 

 necessary to place the base of the lower Permian either 

 at the base of the Elmdale formation, or, at the highest, 

 at the top of the Neva limestone." (p. 21.) 



This is somewhat lower than the Cottonwood 

 limestone which has been rather generally regarded 

 as marking the lower line of the Permian. Beede's 

 selection of this bed as marking the line between the 

 Pennsylvanian and the Permian is based upon the 

 faunal changes shown by the invertebrates. A de- 

 tailed discussion of the stratigraphy and sections 

 shown along the outcrop of the Neva limestone 

 forms the first part of the paper. The accompany- 

 ing map shows the outcrop of the limestone, mark- 

 ing, according to Beede, the eastern limit of the Permian 



Fig. 9. — Map of a portion of 

 central Oklahoma from 

 Kansas to Texas showing 

 the approximate eastern 

 limit of Permian rocks. 

 (After Beede.) 



in Oklahoma. 



STRATIGRAPHY OF THE RED BEDS IN KANSAS. 



Beyond the Oklahoma line, vertebrate remains have been found only in 

 Cowley County, Kansas, where, about 5 miles northeast of Maple City, a few 

 bones were discovered in the excavation of a well, and forwarded by Professor 

 Gould to Dr. Williston, who determined them as Permo-Carboniferous in age.*" 

 Adams provisionally identifies the horizon of these bones as the Garrison.'^ 



'Beede, Oklahoma Geological Survey, Bulletin 121, 19 14. (The Neva Limestone in northern Okla- 

 homa, with remarks upon the correlation of the vertebrate fossil beds of the State. Eastern outcrop of the 

 Permian red beds in Oklahoma, with a discussion of the lithologic and color changes.) 



i* Williston, Kansas University Quart., vol. vi, No. i, p. 53. 



"Adams, Bull. U. S. Geological Survey No. 211, p. 72, 1903. 



