THE SHENANDOAH LIMESTONE 



66 1 



and to the east of "Slate Ridge." The weathered shale is a gray 

 to an olive-grayish color and is very argillaceous. It is to be 

 noted that the lower shales of the Martinsburg are argillaceous 

 and calcareous, while the arenaceous ones finally alternating with 



Fig. 3. — Martinsburg (Utica) shale in Cemetery cut, on B. & O. R. R., one half 

 mile east of Martinsburg, W. Va. 



sandstones, occur higher in the formation. This part of the for- 

 mation, composed mainly of thin bedded, micaceous, somewhat 

 buff-colored sandstones, alternating with some olive argillaceous 

 and arenaceous shales, may be seen by the side of the high- 

 way west of Williamsport, Md., and in the western part of the 

 town. 



