PROSSER THE GENESEE SECTION. 



73 



:depth. kind of rock. formation. 



1 710' Partly lighter gray chips than the above with 



stronger effervescence in cold HCl. 

 1770' Dark gray chips ; scarcely any effervescence in 



cold HCl, but effervesces slowly on heating. 

 1839' Dark gray to drab magnesian limestone. 



Last sample. Onondaga 



Salt group. 

 At Rock Glen, five and three-fourths miles north-west of Castile 

 and about three miles south of Warsaw village, a number of wells 

 have been drilled. The salt w^orks of Alexander Kerr, Brother & 

 Co., are located at this place and through the kindness of Mr. Sam'l 

 T. Kerr an excellent set of samples was obtained from one of their 

 wells. The well was commenced in November, 1890, and finished in 

 January, 1891. Its mouth, according to Mr. Kerr, is about 25' below 

 the tracks of the N. Y., L. E. &: W. R. R., which would make its alti- 

 tude about 1306' A. T., and it was drilled to a depth of 2138'. 



Detailed Record of the Kerr Well at Rock Glen, Wyoming 



Co , New York. 



no. of 



sample. DEPTH. 



description of 



SAMPLE. 



1. 20'. Coarse gravel. 



2. 40'. Clay 20'. 



3. 70'. Fine gravel. 



4. 95'. Arenaceous clay ; top of rock. 



5. 114'. Three large chips, one fine grained 



micaceous, greenish-gray sandstone ; the 

 others argillaceous, olive shale that can 

 be scratched by the nail. Characteristic 

 Portage shale and sandstone. 



6. 185'. Fine chips of slightly arenaceous, grayish 



to olive shales. 



7. 2S5'. Gray shales, some of the chips have a 



slightly brownish streak, slightly calcare- 

 ous. 



8. 350'. Dark gray, argillaceous shale, not calcareous, 



streak nearly white. 



9. 410'. Ditto. 



TO. 475'. Very argillaceous grayish to olive shales. 



95 



of drift. 



Portage 



sandstones 



and shales. 



