South of Freeburg there is a small local anticlinal in the upper Salina measures, which reverses the dip for a short distance and slightly affects the outcrop of the overlying Lower Helderberg limestone. It broadens the limestone belt for nearly a mile eastward; but dies away long before reaching Middle creek.
Near the end of the ridge along the road leading from Kantz into Firestone valley, a small exposure of limestone was seen in a small quarry dipping S. 18° E. 30°, from which point an excellent quarry could be readily developed.
The Oriskany No. VII is not well exposed here, although its chert bowlders cover the south flank of the ridge as well as make its crest all through the township.
A short distance west of Kantz and near Miller’s grist-mill, the upper Salina lime slates become quite massive and calcareous, olive-green in color when freshly broken, and weathering brown.
Limestone quarries.
Edward Bassler’s quarry is opened in the flank of the Firestone ridge just south of Miller’s mill, having one active kiln with a capacity of 200 bushels. The quarry is not large and the beds are quite cavernous, one seam about 4′ thick showing a stalactitic structure and exposed for the length of 50′ on a 50° S. E. dip. The quarry is about 50′ long and 20′ deep and at the opening the measures are dipping steeply northwest and cut by cleavage planes, probably the effect of the anticlinal mentioned south of Freeburg. South of this roll in the quarry there are about 18′ of thin blue beds streaked with calcite, which are largely quarried, the bottom 10′ being the best. A bed of splintery soft limestone makes the roof and possibly occupies the position of the “soapstone” layer in the Union county quarries. The lime made sells only for farm use.
The Rausch quarry is about 100 yards further west and has been idle for several years. The same cleavage shows in the first beds met with at the opening; but above them and to the south, there are about 20′ of the same beds developed in Bassler’s quarry. Above these the measures
