386 DRAKE — THE GEOLOGY OF INDIAN TERRITORY. [Sept. 3, 



which is overlain by a thin clay bed, and this in turn by sandstone 

 conglomerate similar to that west of Wewoka. 



The limestone that outcrops one mile west of Arlington is 

 probably the same as the one that occurs sixteen mjles east of 

 Gushing and two miles west of Pawhuska. Dr. J. P. Smith called 

 the limestone bed that outcrops from two to three miles west of 

 Pawhuska, the Pawhuska limestone.^ 



The limestone bed that outcrops about sixteen miles east of Gush- 

 ing is from four to six feet thick, gray, bedded in rough, thin 

 layers, and contains FusuUna and crinoids. The strata here lie 

 almost horizontal, and the same bed outcrops ten miles east of Gush- 

 ing along the Kelleyville-Gushing road. About five miles east of 

 Gushing higher beds of massive friable cross-bedded sandstone, red 

 clay, and arenaceous limestone oiitcro'p. Some of the limestone is 

 quite pure, but usually it occurs in nodular form in beds one-half to 

 one foot thick. In the vicinity of Gushing clay shales and marls 

 are the principal strata. Six miles north-northwest from Gushing 

 along the south op east bank of the Gimarron river there is a bluff 

 about fifty feet high showing massive and shaly sandstones of light 

 gray or yellowish and reddish color, sometimes cross-bedded. A little 

 rough concretionary limestone occurs at the top of the bed. The 

 twin peaks from ten to eleven miles north of Gushing are com- 

 posed of red clays capped by concretionary limestone. Some of 

 the limestone contains chert. The Pawhuska limestone out- 

 crops about twelve miles north of Gushing along branches of Salt 

 creek. The bed at this locality is about five feet thick, gray in 

 color, hard, rough surfaced, unevenly textured and rich in two 

 species of FusuUna. 



The following section was compiled from outcrops of strata found 

 five to ten miles south of Pawnee. 



FEET. 



1 . Red clays at top. 



2. Limestone , 1 2 



3. Red, bluish and gray clays 150 



4. Limestone (Pawnee limestone)'^ 2 



5. Principally gray clay shales 100 



6. Pawhuska limestone 5 



1 Jour. GeoL, Vol. ii, p. 199. 



2 Stratum 4 appears to be the same as the bed of limestone outcropping on the 

 east side of the courthouse grounds at Pawnee, and for convenience it will be 

 called the Pawnee limestone. 



