Page:Report on the geology of the four counties, Union, Snyder, Mifflin and Juniata (IA reportongeologyo00dinv).pdf/369

Rh the creek the Ore sandstone is again obscurely exposed in both sides of the narrow interior synclinal, the dips of which must be quite steep. Bowlders of this rock continue for a long distance up the flank of the hill, and just before reaching the summit at Bell’s house, red shale and sandstone show ona 10° N. W. dip giving evidence of the broad flat structures of the main anticlinal axis.

Mr. Bell claims to have struck the Sand Vein ore bed in a well near his house, 53′ deep, furnishing 18 inches of hard fossil ore. He does not recall striking any massive ledge of sandstone beneath the ore bed, but reports the existence of several thin beds of sandstone divided by bands of slate underlying the ore. It is just possible that the Danville bed is the one found here, for the measures between the outcrops of the Ore sandstone on either side of the hill correspond closely in appearance to the lower Clinton shales. There is no appearance of the Ore sandstone until going south of his house, where a profusion of bowlders mark its outcrop.

The south flank of the ridge is composed of the Bloomsburg red shales dipping about 30° S. E. beyond which the upper Salina marls and a narrow synclinal tongue of the Lewistown limestone, extending 2 miles east of the river, are crossed over to the base of the Flintstone ridge. Only the bottom layers of the No. VI limestone are exposed along Happy Hollow run, forming a very gentle basin with N. and S. dips of between 10° and 20°.

At the east end of the Lost creek ridge, south of Jericho Mill, the Ore sandstone shows on the dying spurs of each anticlinal with dips of 15° on the north axis and 10° on the south. The brownish-red soil of the rock when decomposed is very conspicuous at the nose of each ridge and along the south flank, where frequently large flat beds of the Ore sandstone are exposed in massive plates on a 10° S. E. dip, over which the road runs west to the first dwelling.

The Flintstone ridge in this township and Walker township on the south is of synclinal structure, the south line of Fermanagh township running for about 1½ miles along