288 ASHLEY — GEOLOGY OF ARKANSAS. [May 13, 



This section is broken at its southern end by a fault of unlcnown 

 throw. 



Section III. — Section iii was recorded by Prof. A. H. Purdue on 

 the West Saline river, beginning at the gap near Moore's mill, 4 S., 

 28 W., section 31, and running south about a mile. This section, 

 like the preceding, is not altogether trustworthy, for the strata are 

 frequently nearly perpendicular and may be overthrown or 

 faulted. The section, omitting minor details, is as follows : 



FEET. 



Sandstone 10 



Shale (probably) 75 



Sandstone 165 



Shale (probably) 165 



Concealed 20 



Shale with a few layers of sandstone 375 



Sandstone 530 



Thin bedded sandstones and shales (poor expo- 

 sure) 175 



Concealed 50 



Thin bedded shaly sandstone 100 



Green shale 50 



Thin bedded shaly sandstone 30 



Shale...., 135 



Sandstone 320 



Green shale 70 



Sandstone 10 



Green shale 25 



Quartzose sandstone 35 



Green shale 30 



Sandstone with some shale 115 



Novaculite and shale 45 



Quartzose sandstone 115 



Shale with few quartzitic sandstone layers 100 



Thin beds of black novaculite and shale 400 



Total 3195 



Section IV. — Section iv was observed on Little Missouri river 

 beginning at the gap where the river cuts through Prairie mountain 

 in 5 S., 27 W., section 6. 



