NORWICH WELL AND SECTION. 95 



SECTION OF THE NORWICH WELL. 



Approximate altitude, 1,000 feet. 



Depth. Thickness. Kind of rock. Formation. 



Feet. Feet. • 



50 25 Dark gray or bluish-gray arenaceous shale; 



non-calcareous < >neonta of Conrad. 



75 50 Mostly argillaceous shale, but part of the 



chips are from a fossiliferous layer which 

 contains Spirifera mesacostaMs, Hall (?) .... Portage. 



125 50 Bluish gray arenaceous chips " 



175 75 Chips, very fine, and of a dull gray color, 



non-calcareous ; " Sherburne sandstone ". " 



250 200 Dark gray and greenish gray argillaceous 



and arenaceous shales ; " fresh water and 



gas at 384 feet " 



450 170 Bluish argillaceous shale, non-calcareous; 



probably Hamilton Hamilton (?). 



020 65 Gray shale, quite calcareous and rather arena- 



ceous, with mica ; must be Hamilton .... Hamilton. 

 685 190 Lithology same as above, slightly calcareous, 



" gas pocket " of driller " 



875 585 Dark gray arenaceous shale, slightly calcare- 

 ous ; fossils at 1,020 feet ' : 



1,460 190 Bluish argillaceous shale, quite calcareous, 



fossils ; Clionetes scitula, Hall (?) ■ " 



1,650 400 Dark gray argillaceous and arenaceous shales " 

 2,050 185 Very dark blue to blackish shale ; streak- 

 white, non-calcareous " 



2,235 99 Very dark almost black argillaceous shale 



with brownish white streak, non-calcare- 

 ous ; Marcellus shale or black band in the 



Hamilton Marcellus (?). 



2.:;:!4 Black argillaceous shale, non-calcareous, 

 brown streak ; true Marcellus. Bottom of 

 well Marcellus. 



This well begins in the Lower Portage, Oneonta group of Conrad or 

 the Paracyclas Virata stage of the Hamilton fauna, as named by Dr H. S. 

 Williams,* and terminates in the Marcellus. The Hamilton is shown to 

 have a probable thickness of from 1.615 to 1,785 feet, which is the most 

 important fact furnished by the record of this well. 



Morrisville Well and Section. — In- the spring and summer of 1887 the 

 first test-well was drilled in central Xew York at Eagle ville, about- one 

 mile south of Morrisville, Madison county, and twenty-live miles slightly 



*See Prosser in Proc. Am. Assoc. Adv. Sci., vol. xxxvi, 1887, p. 210. 



