1892.] prosser — the (lenesee section. 85 



Section of the First or "Pioneer" Wyoming Well. 



Approximate altitude 1004' A. T. (') 



DEPTH. ^^Ess'^' KIND OF ROCK. FORMATION. 



40' Soil and clay. 



40' Bluish shales. Portage. (?) 



220' Black shales becoming lighter below. (ienesee. 



10' Limestone. Hamilton. 



40 



80' 

 ;oo' 



^6^' Light colored shale and very black near 



the base. Marcellus. 



673' Upper Helderberg. 



100' Corniferous limestone. Lower Helderberg. 



773 



865' 



1270' 



1340' 



92' Limestone. 

 405' Drab colored limestone and gypseous shales. 

 70' Salt alternating with shale. 



O 

 3 

 o 



3 

 Cu 

 P 



y "" 



o 



c 

 t3 



190' Red shales alternating with drab and dark colored 

 shales. (") 

 1530' Bottom of well. 



(i.) .Ann. Rept. Supt. Onondaga Salt Springs for 1888, Chart No. III. 



(2.) The thickness of the layers in the above section is taken from Chart No. II of Engelhardt's 

 report for 1888, but the description is in part from his earlier accounts. In the first account the thick- 

 ness of the '■ shales alternating with gypsum and limestone," just above the salt, is given as 362' 

 instead of 405' I Ann. Rept. Supt. Onondaga Salt Springs for 1881, p. 20). The account the following 

 year gives the Hamilton hmestore as 5' thick instead of 10' ; the shales below this limestone as 345' 

 instead of 363' ; from the top of the Corniferous limestone to the top of the salt as 610' instead of 597'; 

 and the red shales as 200' instead of lyo' {Jbiii., 1882, Assem. Doc. for 1883, No. 35, p. 25). The sec- 

 tion quoted by Professor Bishop gives it as 660' from the mouth of the well to the top of the Cornif- 

 erous limestone instead of 673' ; and from the top of the limestone to the salt as 610' instead of 597' 

 (5th Ann. Rept, State Geologist [of New York] for 1885, p. 21). 



Mr. James Macfarlane, in his account of this well, stated that the salt was reached at a depth of 

 1279' ; that it was 70' thick, of which 40' or 50' consisted of pure salt ; then the well was continued to a 

 depth of 153c' through red shales and sandstones of the salt group : and that the Niagara limestone 

 was reached at 1562' (Am. Jour. Science, 3d ser., Yol. xvi, 1S7S, p. 144). 



