REPORT OF THE STATE PALEONTOLOGIST 1902 



1083 



The proximity of this cut to wells penetrating to the Lockport 

 dolomite, and to exposures on the west branch of Allen creek 

 within half a mile to the north, show that the section is located 

 on the northern edge of the Salina formation, hence approxi- 

 mately at its base. 



The accompanying table, representing the beds lying between 

 the black shale and the Lockport dolomite, as well as those for 

 some distance above, was made from an examination of well 

 sections a little to the westward of the fossil locality, and from 

 a series of outcrops along the creek. The level of the black 

 shale is thus ascertained to be about 20 feet from the base. 



From wells: 8ali ™ 



1 Red shale or marlite 10 



2 Hard, fine grained, yellowish, dolomite, having 



an imperfect conchoidal fracture 2 



3 Red shale 1 



4 Break estimated at 3 



5 Dolomite like no. 2 3 



6 Green shale or marlite 4 



7 Red shale 1 8 



8 Break estimated at about 2 



9 Green shale 2 5 



10 Black shale, very fine textured, fissile, and with 



1 inch dolomite parting (eurypterid horizon) 1 6 



11 Green shale 1 



12 Dolomite like no. 2 2 



13 Green shale or marlite 6 



From west branch of Allen creek: 



14 Light colored waterlime, some pyrites and sun 



cracks 5 



15 Pea-green shaly marlite 7 



51 7 



Niagaran 



16 An impure yellowish porous limestone 



17 Succeeded by an impure bituminous limestone 



made up of imbricating, shell-like domes etc. 



