640 



Report of the State Geologist.- 



8. Pterinea Trmtonensis (Conrad). (rr) 



9. (?) Edmondia suhtruncata (Hall). (rr) 



10. Endoceras proteiforme^ Hall. (c) 



11. Raphistoma lenticulare (Emmons). (r) 



12. Trocholites ammonii/x, Conrad. (r) 



15. Rajinesquina alternata (Con.), H. and C. (r) 

 14. OrtMs (Dinorthis) jtectinella, Ehmi., var. semiovalis, Hall, (rr) 

 IT). Crinoid segment. (rr) 



16. Liptoholus msignis, Hall. (r) 



17. Lingula cwrta, Con. (a) 



18. Monticulipora (Prasopora) lyoqperdon, Say. (rr) 



19. Bellerophon sp. (rr) 



The Mohawk Valley Stone Company's Quarry. 



On the northern side of the Mohawk river to the west of Palatine 

 Bridge is the extensive quarry of the Mohawk Valley Stone Company, 

 formerly called the Frey. This quarry is in the Fucoidal substage of the 

 Calciferous and in recent years a large amount of stone has been shipped 

 from it. At present it is, probably, the most largely worked quarry in the 

 Mohawk valley. On the upper surface of the rock, near its eastern end, 

 are glacial striae. 



LII C\ Covered from the level of the New York Central rail- 

 road track to the base of the quarry. 



C 2 . The lower half of the quarry, consisting of fucoidal Calcif- ^1% 

 erous sandrock which splits into three prominent layers that become thinner 

 on the weathered surface and thus do not extend for any considerable 

 distance. 



C 3 . Nine feet and four inches of fucoidal Calciferous sandrock, 9 F J% 

 in fairly thick layers, forming the upper part of the quarry. 



In the field to the northeast of the quarry a ledge of Calciferous rock 

 was noticed, but no other formation was seen below the highway. Mr. Darton 

 stated that the Fucoidal beds in the vicinity of Canajoharie, ''have a 

 thickness of about ten feet and lie about six feet below the top of the 

 formation."* It is perfectly evident after an examination of the quarries on 

 either side of the Mohawk river at Canajoharie. that the thickness of the 

 Fucoidal substage is much greater than ten feet. 



* Thirteenth Annual Report of the Sttite Geologist |New York], p. 421. 



