ILLUSTRATED NOTE ON A MINIATURE OVERTHRUST 

 FAULT AND ANTICLINE 



The figure below represents a miniature anticline passing into 

 a reversed fault above. It is on the Ozark-St. Paul road, on the 

 east side of the road, one mile north of the town of Ozark, Ark. 

 The rocks are of 

 the Coal-meas- 

 ure series, and 

 consist of shale 

 interbedded 

 with thin layers 

 of sandstone. 

 The strike of 

 the fold is about 

 east and west, it 

 being one of the 

 series of feeble 

 folds on the 

 northern border 

 of the Ouachita 

 folded area and 

 near the south- 

 ern base of the 

 Boston Moun- 

 tains. 



The length 

 of that part of 

 the flexure 

 which is visible, 



and which at the time the photograph was taken had recently 

 been freshly exposed in working the road, is ten feet, and the 

 height five feet. 



Aside from the interest which attaches to this as an example 



341 



