MINERAL RESOURCES OF THE STATE OF NEW YORK I9I 



who has contributed these details regarding the development, the 

 principal supply of gas is in the base of the Marcellus shale or in 

 the upper beds of the Onondaga limestone; but pockets occur in 

 the Hamilton shales above the Marcellus horizon. The gas is piped 

 to Naples for heating and light. The wells are owned by Granby 

 and Hemenway who report that the output has fallen off in recent 

 years and increasing difficulties have been met from influx of water. 



Monroe county. A pool of natural gas occurs near Churchville 

 in the western part of the county. Its precise location is 3 miles 

 east of Churchville in the town of Riga. Mr Frank B. Barnard, 

 president of the Churchville Oil & Natural Gas Co., which distributes 

 the output, states that the gas occurs in the Medina sandstone and 

 that the flow comes from a zone about 75 feet below the top of the 

 formation which is found at 480 feet. There are about 1 5 productive 

 wells and the gas is used in Churchville, Bergen and Riga. The 

 occurrence has interest from the shallow depth of the pool, represent- 

 ing probably the minimum depth at which any considerable flow 

 has so far been reported in the Medina formation. The outcrop 

 of the sandstone is only 7 miles distant, directly north of Churchville, 

 at an elevation about 60 feet below the mouth of the wells, as nearly 

 as can be ascertained from the topographic map. This would 

 indicate a dip for the strata at the average rate of 60 feet to the 

 mile. 



W^ll at Brockport. This well was put down many years ago and 

 was reported upon by Prof. C. S. Prosser^ who gave the following 



record : 



Medina red shale 500 feet 



Medina dark red shale 900 



Medina very dark red shale 950 



Gray and bluish calcareous shale i 000 



Blue shale and sandstone i 400 



Blue compact Trenton limestone 2 000 



Yates county. A few wells have been drilled in the vicinity of 

 Rushville on the border of Ontario county. The flow is small and 

 consimied locally. No details are at hand in regard to the horizon 

 of the occurrence. 



Seneca county. A number of gas wells were in use at one time 

 for the supply at Seneca Falls. Bishop^ mentions that twelve were 

 drilled in the period 1885-97 ^^^ ^^ the latter date the supply 

 amounted to 50,000 cubic feet a day. The flow apparently came 

 from different horizons, including the Clinton, Medina and possibly 



^ Proceed. Rochester Acad. Sci. v. 2, p. 91 



2 N. Y. State Mus. Ann. Rep't 51, v. 2, 1897, p. 12. 



