1897.J DRAKE — THE GEOLOGY OF INDIAN TERRITORY. 385 



which is about two miles west of Polecat creek, sixteen miles 

 east of Gushing, the strata apparently dip about twenty-five 

 feet per mile. The top of this group outcrops along the bed of 

 Bird creek, one mile west of Pawhuska. On either side of the 

 creek, beds of gray and bluish clay shales and some thin sandstone 

 beds overlie the main sandstone group, so that it does not form the 

 chief outcrops until a point about ten miles southeast of Pawhuska 

 is reached. 



From Pawhuska the rocks of this group outcrop southeastward 

 along the Skiatook-Pawhuska road for about fifteen miles. The 

 principal variation across this Adair- Pawhuska section is a slight 

 increase of argillaceous strata. A three-foot bed of brownish 

 weathering arenaceous limestone occurs about one and a half miles 

 east of the road crossing Bircli creek. From Birch creek westward 

 the dip of the strata appears to be twenty-five to thirty feet per mile 

 to the westward, while for five or six miles to the east the strata are 

 almost horizontal. 



The next higher group of Permian beds consists of bluish and red 

 clay shales and marls, interstratified at rather wide intervals with 

 thin cross-bedded sandstones and occasional thin limestones. The 

 following local developments will give the usual characteristics. The 

 lower part of this group, as seen eight to nine miles west-southwest 

 from Wewoka, consists of sandy clay shales, bluish and reddish 

 colored, and massive sandstones that have edges and parts of the 

 rock broken into thin shaly wedge-shaped, cross-bedded strata. The 

 sandstone is either light grayish or reddish-colored. The gray sand- 

 stone is coarse textured. Farther westward and higher geologically 

 the sandstones decrease in quantity and most of the strata are red 

 clay shales. 



Two and a half miles southeast of Econtuska there is a little 

 white, nodular, arenaceous limestone interstratified with yellowish 

 marls. The strata at Bellmont and between that place and Arling- 

 ton are mainly red arenaceous, calcareous clays interstratified with 

 occasional red sandstones which are usually rather massive, but often 

 broken into shaly and flaggy parts by cross-bedding planes. Some 

 of the sandstone has a light gray-color. There are also rare beds 

 of arenaceous and even quite pure fossiliferous limestone which 

 varies in color from white and gray to red and almost invariably 

 weathers to rough nodular fragments. One of these beds outcrops 

 one mile west of Arlington. Five or six miles east of Arlington 

 there is a one to three-foot bed of hard crystalline red limestone 



