1897.J ASHLEY — GEOLOGY OF ARKAXSAS. 281 



29 W., in the southeast corner of section 3, a recent exposure 

 made in the bank shows the strata making a complete overturn. 

 Prof. Purdue reports this to be an unusually fine illustration of an 

 overturn. The overthrow is to the south. Though this fold was 

 not found further west, the monoclinal ridge just north of it was 

 traced across the township, indicating that the anticline continues 

 across the township with a strike a little north of west. 



In 5 S., 30 W., there is probably an overturn in sections 6 or 7 

 — an eastward continuation of the Cross mountain. Only north 

 dips were found, however. 



Minor Anticlines. — In 5 S., 28 W., section 8, northeast quarter, 

 the West Saline crosses an anticline a little below Lance's mill, and 

 in the centre of the southeast quarter of the same section there is 

 another one. In 5 S., 29 W., there were found, corresponding to 

 these two anticlines, two doubtful anticlines on Harris Fork; one a 

 quarter of a mile south of Watkins' mill in section 10, and the 

 other a quarter of a mile north of the southwest corner of section 11. 



Prior Ridge Anticline. — In 5 S., 27 W., the structure and topog- 

 raphy suggest an overturned anticline in the northwest corner of 

 section 17. It is overthrown to the north. At the Little Missouri 

 it is hidden in bottom land, but a short distance west of that 

 stream it makes a ridge between White Oak creek and Clover 

 creek, which gives evidence of anticlinal structure. This ridge 

 was traced a little south of west to the Saline, where the structure 

 is anticlinal. From the Saline to Harris Fork it could not be 

 traced, but an anticline crossed by Harris Fork in 5 S., 29 W., 

 northeast quarter of section 15, is in the same strike and may be 

 the same axis. This last anticline may also be on the same axis as 

 an anticline on Moore's creek, section i6, northwest quarter; the 

 intermediate topography exhibits no clear structural relations. 



An anticlinal ridge extends from Moore's creek to the Cossatot ; 

 the anticlinal structure is shown where it is cut by Moore's creek 

 in 5 S., 29 W., northwest quarter of section 16. The ridge then 

 runs a little north of west to 5 S., 30 W., southwest corner of sec- 

 tion 12, showing the anticlinal structure north of Eldridge post- 

 office in 5 S., 29 W., section 18, northern part. 



In 5 S., 30 W\, it is known as Prior's ridge, and it runs due 

 west from section 12, the anticline showing where cut by Baker 

 creek in the southwest corner of section 11, and as an overturn 

 where cut by the Cossatot in section 7, southeast corner. From 



