68 NEW YORK STATE MUSEUM 



Feet 



These shales are quarried, ground and sold 

 for plaster; but several analyses of different 

 specimens failed to reveal gypsum. 



A 3 Niagara limestone. Dark gray, massive lime- 7-6$ 



stone in which Favo sites niaga- 

 r e n s i s Hall and Stromatopora are 

 conspicuous. In addition to these Spirifer 

 sp. occurs rarely, which is the same as the one 

 figured by Hall in Paleontology of New York, 

 v. 2, pi. 74, fig. 8a-d, from the Coralline lime- 

 stone [Niagara] at Schoharie (N. Y.) It was 

 not identified specifically but considered as 

 clearly allied to S. crispus (His.) Sow. In 

 the cliff above the Clinton shale, is a massive 

 stratum 4 feet, 4 inches in 'thickness. The 

 total thickness is well shown by the roadside 

 immediately west of the old cement quarries, 

 where at the base is a massive stratum 4 feet, 

 1 inch thick, above which are thin bedded 

 to somewhat shaly layers with a thick- 

 ness of almost 3 feet. The Favosites 

 niagarensis Hall occurs within 1 inch 

 of the top of the shaly layers. Below the 

 limestone is the upper part of the Clinton 

 shales while above is the waterlime. This 

 outcrop is very well shown by the picture in 

 Darton's report 1 , as is also the Niagara lime- 

 stone at the top of the Clinton shale in the 

 plaster quarry. 2 



A 4 Waterlime varying from dark to light gray 39-102 

 and weathering to a buff color. Argillaceous 

 and magnesian limestone which has thicker 

 layers at the base and thinner bedded to shaly 

 ones in the upper part. The top of the forma- 



H3th an. rep't state geologist. 1893. pi. 3. 

 213th an. rep't state geologist. 1893. pi. 4. 



