1897.] ASHLEY — GEOLOGY OF ARKANSAS. 287 



the south very gradually. In 6 S., 30 W., the northern one is 

 crossed by the Cossatot in section 9, southwest quarter, and the 

 southern anticline in section 17, northwest quarter. Further west 

 their presence is indicated only by finding outcroppings of igneous 

 rock in 6 S., 32 W., section 9, southeast of southeast, in the strike 

 of the northern anticline and in the strike of the southern one in 

 isection 14, northwest quarter, on Rolling Fork and on the bluffs 

 above. 



Brushy Branch Anticline — The Brushy branch anticline is the 

 northernmost of the three anticlines that are crossed by the Little 

 Missouri river in 6 S., 27 W., section 12. It is in the northeast of 

 the northwest quarter, nicely exposed in shales, and is overthrown to 

 the north. Just north of it in section i, where the river runs 

 southwest, a syncline shows on the east bank. It was noted in 

 section 9, northeast of southeast, south of Brushy branch, with a 

 strike a little south of west. Following the topography across 6 S., 



28 W., an anticline is crossed by the Saline in 6 S., 29 W., section 

 24. From here the axis is supposed to run south of west across 

 •6 S., 29 W. Then turning west it crosses 6 S., 30 W., connecting 

 with the anticline crossed by the Cossatot, in section 30, the south- 

 west quarter of the northeast quarter. In section 29 this anticline 

 forms a high ridge north of Sweeney's creek. Due west of this 

 another anticline is crossed by the Rolling Fork in 6 S., 32 W., sec- 

 tions 25 and 27, and again in section 30, northeast of the north- 

 west, an outcrop of igneous rock indicates its presence. 



The White Oak Creek Anticline.— T\vq White Oak creek anti- 

 cline is the second of those crossed by the Little Missouri in 6 S., 



29 W., section 12. The south side of the anticline appears, as 

 a small monoclinal ridge, the single layer which forms the body of 

 the ridge being bent sharply at the top. It then forms the ridge 

 which runs south of west, south of White Oak creek and the Brushy 

 fork of the Saline. This ridge, while not sharply defined, is quite 

 a high one, forming a watershed between Brushy Fork and the 

 drainage to the south and southeast. In 6 S., 29 W., it is crossed 

 by the Saline in the southeast quarter of section 26, and again in 

 the northeast quarter of section t^-x^^ the structure here appearing to 

 be an overturn overthrown to the south. It then turns due 

 west, forming a broad flat-topped ridge across the southern part of 

 6 S., 30 W., south of Hunter's creek, being crossed by the Cossatot 

 in section 31, northeast quarter, the anticline still being overthrown 



