Page:Report on the geology of the four counties, Union, Snyder, Mifflin and Juniata (IA reportongeologyo00dinv).pdf/402

374 F³. cuts through this ridge, the limestones are again slightly quarried upon a similar dip, showing about 20′ of fair stone.

On the road leading south from Pleasant View past the school house and grist mill, there is a well marked synclinal roll to the south of the main axis in Marcellus slate, just south of the school house. The dips are about 40° each way, and are considerably twisted and broken along the road further south. This structure is reflected in the Oriskany ridge to the east, only there it amounts to a flattening of the Stormville shales along the road between the main ridge and the Tuscarora valley and a broadening of the Oriskany measures into a small knob southeast of Pleasant View.

South of the slate synclinal, going up stream through the gap in the ridge, No. VII shows as flint and chert in a thin band succeeded by No. VI limestone opened opposite the Patterson or Fitzgerald house on the west side of the road, at Yoder quarry, where a series of thin limestone beds, aggregating 50′ to 60′ in thickness, outcrop on a regular northwest dip of 50°. This quarry is on a part of the old Hock property. Better beds show in an adjoining quarry further south and nearer the mill upon a somewhat decreased dip and about 30′ thick.

The section further south into the Sink Hole valley synclinal shows some few peculiarities. The upper Salina lime shales first show at Patterson’s place, succeeded by gray, green and blue slates upon a 10° dip. At Yoder’s barn the dip stiffens to 30 N. W. in red shale, the same measures dipping 30° S. E. near his house and mark the expiration of the red shale anticlinal noted at Mrs. Wharton’s in the eastern end of the township.

The back valley road is just in the Sink Hole synclinal and from here west to the Dunkard church in Tuscarora township, the ore ridge on the south side of the basin becomes more and more prominent as the little Sink Hole valley basin shoals up in that direction.

At the most western gap through the south limestone ridge in this township, about one-half mile east of the