1874.] 



33 



[Lesley. 



THE PENNINGTON RANGE. 



Crass section A B, fig. 2, shows the ore-bearing limestones at the Pen- 

 nington Banks dipping northicest, and the hard limestones in the quarries 

 on Logan's Creek dipping also nortMcest 23° to 27°, increasing (as we 

 descend the creek) to 90°, and in some places overturned; then, rising at 

 53°, 54° (S. E. dip), to shoot over the Bald Eagle Mountain. 



Cross section A B shows the same ore-bearing limestones at a point on 

 the road to Huntingdon Furnace, a mile and a quarter southeast of the 



Fig. 8. 



4ifOYV Ore ViouwXts 



OnlVvt ^uc. t^ tVu. 



Ov».wajtt)L-4fv^ ^*raAA«tlU» WoJ* 



Banks, and on the opposite side of the Ridge, dipping gently southeast, 

 and making a strong outcrop of ore ground. 



These are our elements of structure. Taken in connection with those 

 of the Little Juniata River section, fig. 1, the geology is evident. There 

 is a low anticlinal arch in the Pennington Ridge, and a sharply plicated 

 little synclinal trough in the Valley of Logan's Creek. 

 A. P. S. — ^VOL. XIV. E 



