Luther— Economic (xeology of Onondaga County. 



297 



feet, seven inches per mile. In Dr. Englehardt's record of the state well drilled 

 in 1884 at the south end of Onondaga lake, it appeai-s that the Niagara lime- 

 stone was reached at 208 feet below sea level. As it appears at the surface 

 nine and one-half miles north of the well at an elevation of 375 feet A. T., 

 there is apparently a dip of 61 + feet per mile. Using the record of the 

 Gale well on the north shore of the lake in like manner, the result is 54 -f- feet 

 for the dip of the limestone. This increase of dip is explained partly, at 

 least, by the fact that the thickness of the red shales and the rocks of the 

 salt horizon increases rapidly toward the south as shown by the well records. 

 ( )n an east and west line the dip of the top of the Corniferous limestone is hardly 

 measurable. By comparison with known exposures in Genesee county it is 

 found to average ten inches to the mile toward the west for the whole 

 distance. The average westerly dip of the Tully limestone to Ontario count) 

 is 7 —J- feet per mile. 



So far as can be determined by the data at hand, the rock salt beds have 

 no dip, but are practically level on an east and west line. Some small gas 

 springs occur in the vicinity of Skaneateles lake and Otisco lake, and at other 

 localities in the Hamilton shales, but the quantity of gas is not large enough 

 to be of commercial value. The amount found in the Tully salt wells was 

 also slight. Large leases of land in the towns of Lysander and Clay have 

 recently been made by a company intending to sink wells to the Trenton lime- 

 stone for gas, but as yet no drilling has been done. 



