Page:Report on the geology of the four counties, Union, Snyder, Mifflin and Juniata (IA reportongeologyo00dinv).pdf/101

Rh crosses the Juniata on a 60° N. W. dip about a mile south of Lewistown.

It apparently folds over the Shade mountain anticlinal before reaching the ridge again on the west side of the big bend, where two exposures of it on the public road south of the school house show north and south dips of 60° and, 70°. Here the outcrop is turned east into the synclinal between Shade and Blue Ridge; but the position of the Ore sandstone is obscured here by reason of erosion. The outcrop apparently turns westward again before reaching the river, as the basin shallows up in that direction and thence makes a straight line along the north base of the Blue Ridge.

Comparatively little is known of the ore beds along this part of the range, as no developments have ever been made. At Bixler’s Gap, 1½ miles south of Lewistown, the “Bird’s Eye” fossil ore was once opened 7″ thick, but of inferior quality.

One mile west of Granville Gap, an old shaft sunk on the Sand Vein developed a thin seam of hard fossil. The Ore sandstone is 16′ thick and dips 30° N. W. At Minehart’s Gap, south of Granville Station, P. R. R., the Ore sandstone shows the same. Mr. Dewees, Report F, p. 88, reports “the argillaceous sand rock under the Ore sandstone and above the Danville ore beds 28′ thick. The Danville ore bed rock, above the ore bed is 4′ thick, making the whole thickness from the top of the Ore sandstone to the upper Danville beds 50′”, He also found the upper Danville bed 12″ thick, but lean and calcareous. The Sand Vein is reported “thin and of poor quality,” which is apparently true of this bed all the way to Huntingdon county line.

East of Jenkin’s Gap, which is south east of McVeytown, a shaft was sunk on the Danville bed on George Hoffman’s property and a considerable quantity of altered fossil taken from it.

Near Shank’s Gap a number of shafts were once put