55 



Resuming our delineation of the anticlinal axes which affect 

 the hmestone formation of the Kittalinny Valley, the next in order 

 which plainly manifests itself to the northwest of the general line of 

 elevation already described, belongs to the small ridge of primary 

 rocks which runs very nearly in the prolongation of Pimple Hill, 

 southvvestward from the turnpike towards Long Pond. South of 

 the pond, this axis is distinctly traceable in the limestone nearly to 

 the next turnpike, which passes through Andover. If this and 

 the axis of Pimple Hill are not identical, they are most probably 

 the joint results of one elevatory force, exerted along a nearly 

 continuous line. West of Andover, this line of elevation in the 

 limestone is no longer traceable, the dips of the rock on the 

 northern side of the Pequest being referable to the more influen- 

 tial axis which is prolonged from the violently uplifted ridge of 

 Jenny Jump. 



Between the short axis now described and that of the Sparta 

 ridge southeast of it, we meet with a narrow belt of limestone, 

 coming to a point towards Pimple Hill. In this belt, which opens 

 out towards the southwest in the more expanded synclinal basin, 

 southeast of the Jenny Jump axes, the limestone is much disturbed, 

 and along its eastern side is in some places entirely crystallized 

 by igneous agency. 



The axis of elevation which passes longitudinally through 

 Jenny Jump, is plainly exposed in the hmestone for several miles 

 in both directions. At the southwestern extremity of the ridge it 

 passes to the south of the little village of Sarepta, and parallel 

 with the base of Scott's Mountain towards Belvidere, forming a 

 small synclinal basin in the secondary rocks, between Bridgeville 

 and Belvidere. Along this anticlinal axis, especially near the 

 mountain, the beds of the limestone are highly uplifted, and in 

 many places, greatly crushed. 



The movement which elevated Jenny Jump, seems to have 

 been every where one of excessive suddenness and violence, as 

 the strata along its anticlinal axis are not only there frequently 

 much dislocated and broken, but those lying immediately along 

 its northwestern base, are in several places thrown into an in- 

 verted posture, dipping, not to the northwest, but in towards the 

 base of the hill. 



Tracing this anticlinal axis towards the northeast, we find it 



