64 NEW YORK STATE MUSEUM 



geologic formations were represented. 1 A prominent limestone 

 cliff begins about opposite the village and extends to the northern 

 end of the hill opposite Central Bridge, where it turns to the 

 west up the Oobleskill valley. This limestone escarpment may 

 be distinctly seen by all passengers on the railroad from Schoharie 

 junction to Schoharie. The rocks are better exposed in the 

 middle and upper parts of this hill; therefore, in making a section 

 of it, it is better to go down the creek about one mile from the 

 Gebhard creek bridge. 



Feet 



III B 1 Mostly covered slope from the creek level to 260=260 

 the base of the prominent cliff. About 100 feet 

 below the base of the cliff some ledges of Hudr 

 son sandstone. 



B 2 Thin bedded, drab colored, impure limestones, 10=270 

 which form the upper part of the waterlime. 



B 3 Dark blue, mainly thin bedded limestones, with 44J=314^ 

 the metallic ring of the Tentaculite limestone. - 

 From the top of the waterlime to the base of the 

 massive limestone containing Pentamerus it is 

 44J feet; but the upper 8 feet or more is some- 

 what transitional in lithology, for there are 

 quite thick layers separated by thin shales. 

 T e n t a c u 1 i t e s was not seen in the upper 

 part of the formation ; but Spirifer 

 vanuxemi Hall occurs commonly in layers 

 within 8 feet of the top. 



B 4 Massive, dark gray limestone, breaking with a 53=367^ 

 rough surface, that forms the upper part of the 

 cliff; the Pentamerus limestone. In the per- 

 pendicular wall of the cliff there is 27J feet of 

 the Pentamerus limestone; while the total thick- 

 ness of the formation as measured at one place 

 on the cliff is 50 feet, and at another 53 feet. 



1 13th an. rep't N. Y. state geologist. 1893 p. 227. More recently a sketch 

 of this mountain has been given in Bull. N. Y. state museum no. 19, 1898 pi. 67. 



