Page:Report on the geology of the four counties, Union, Snyder, Mifflin and Juniata (IA reportongeologyo00dinv).pdf/132

104 F³. quarry formerly worked by Cameron. But these latter openings were idle and both small.

The Beaver, or Miller, quarry is situated high in the ridge about ¼ of a mile down Buffalo creek from Hafer’s grist mill in the north leg of the synclinal on a low E. S. E. dip. Probably 60′ of good blue stone is exposed here 200′ above creek level, and in the interval there are several additional ledges of limestone rather more white and gray, so that the entire series cannot be less than 200′ in thickness, estimating the top layers of the upper Salina beds to be above creek level here.

The quarry was being operated by Mr. Stall, but was not active at the time of inspection.

The limestone can be quarried here with great advantage and cheapness, as the opening is practically in the center of the synclinal, and can be worked in both directions with equal advantage.

In the Mifflinburg ridge. which is also sometimes called the “Limestone Ridge” by the local inhabitants, there are one or two small quarries close to the Limestone township line, opened near the crest, with dips of from 15°-20° N. W. This ridge is of synclinal structure, and in its length of 7 miles, contains three narrow compressed strips of the Oriskany sandstone, separated from one another by erosion along the crest of the ridge. The eastern extremity contains limestone throughout, and its southern crest has been cut down in a desultory manner for several hundred yards along properties of Messrs. Frock & Bucher.

Henry Frock’s quarry, which is the more eastern, is only worked for private farm use; but the stone is in fair condition to develop well and enable an excellent quarry to be opened at this point.

The Rev. Mr. Bucher’s quarry is really a series of small openings for several hundred yards along the hill, beginning at ¼ of a mile west from Frock’s opening and extending to, if not entirely in, Limestone township. A very small section of the limestone measures is exposed in any of these openings, although the stone worked is apparently of excellent quality.