Page:Report on the geology of the four counties, Union, Snyder, Mifflin and Juniata (IA reportongeologyo00dinv).pdf/216

188 F³. high in No. VI, and do not exendextend [sic] for more than 125′ along the outcrop. Ulsh’s is the largest, exposing about 30′ of stone on a dip of N. 20° W. 20°; 8′ of good blue stone on the bottom, one foot of shale, one foot of blue limestone and the balance thin blue beds, somewhat shaly, from 2″–3″ thick. The two other quarries have hardly developed the lowest bed at all, so that, commercially speaking, the lime burned here would not rank very high. However, the opportunities are just as favorable here as elsewhere for getting good stone, if properly taken advantage of, the dip into the hill being the only bad feature. The more massive beds could be opened further down the flank of the ridge.

The central portion of the township, between the two Oriskany ridges on either side of the Northumberland synclinal, is entirely occupied by the Marcellus, Hamilton and perhaps a portion of the Genessee measures. The dips are everywhere slight, not exceeding 25° on the north and south sides of the valley and lying almost perfectly flat for nearly a mile in width in the center; and as these rocks in this portion of the county are distinctively slate they have been largely corded and exhibit few good outcrops.

This township has been divided nearly in half by the erection of Spring out of its eastern portion and now makes a rude right-angle triangle at the extreme west end of the county, bordering on Mifflin county. Its north line is about 2 miles long on the Jack’s mountain anticlinal, extending from near the center of the interior Hudson river slate valley to a knob of Oneida sandstone at the northwest corner of Spring. Its western line is about 6 miles in length nearly due north and south, its south line making an obtuse angle with the western line, west of McClure, and extending for 3 miles southeast to the Oneida crest of Shade mountain along which it is continued for about 2½ miles to the Spring line. It has a mutual eastern line with Spring and an area of about 15 square miles.

McClure is a thriving village and railroad station, situated in the upper Salina valley near the Mifflin county line,