609' 



6i5 



626 



LIVONIA SALT SHAFT 27 



Depth Thickness 



2 feet light gray limestone. 



^ 4 feet sandy shale, quite hard. 



5 4 feet fine bituminous shale. 



**' 34 feet soft dark rock. 



\ „ 6 inches hard sandy dark bluish gray shale. 

 , „ 3 feet 4 inches soft dark bluish shale. 

 \ 1 foot 2 inches hard calcareous sandy layer. 



6 feet dark bluish soft shale. 

 1 1 feet harder dark blue shale. 



3 feet sandy layer, quite hard. 



21 feet dark brownish and bluish gray shale. 



** 147 feet dark brown or black shale, with bluish 



797 or olive layers. 



1 5 feet very bituminous shale, bottom of Hamilton. 



11 feet black bituminous shale. 

 823 



^ 2 feet compact gray limestone. 



^ 4 feet of black bituminous shale. 



22 feet of black shale, very bituminous. 

 ^ 1 foot bluish black shale. 



^~ 2 feet black impure limestone. 



^ 2 feet blue black grayish limestone. 



^ 1 foot impure limestone. 



^' 6 feet black shale. 



^ 3 feet black hard shale, bottom of Marcellus. 



22 feet gray limestone with chert. 

 66 feet gray limestone containing chert. 

 954 24 feet gray limestone full of chert very hard. 



9' 20 feet 6 inches gray limestone containing less 



998' 6" chert, bottom of corniferozis. (Gas.) 



2 feet 6 inches gray limestone, no chert. 

 5 feet hard green and gray sandstone (Oriskany). 

 Containing pebbles and fragments of hy. 

 1006 draulic limestone. 



4 feet bituminous dark colored hydraulic lime- 

 1010 stone. 



1 00 1 



