GEOLOGY AND PALEONTOLOGY OF THE SCHOHARIE VALLEY 237 



The following section will show the relation of the Cobleskill 

 to the overlying rock as it is exposed in the nearly vertical wall 

 of the Brown quarry. 



Section of Brown quarry modified from HartnageVs section 



Rondout Feet Inches 



e7 Thin bedded, light colored waterlime 10 



e 6 Blue lime mudrock with corals in fragment 2 1 



e 5 Blue limestone with corals (like e 6) 2 1 



e 4 Fine, somewhat argillaceous lime sandrock 

 weathering earthy, with Favosites and Stro- 

 ma top or a, and with C a m a r o t o e c h i a ? 



1 a in e 1 1 a t a and other fossils 1 2 



e3 Clayey weathered layer with Favosites 4 



e2 Argillaceous lime mudrock with Favosites and 



C a m a r o t o e c h i a ? 1 a m e 1 1 a t a 1 10 



el Shaly and clayey layers 10 



Cobleskill 



d 3 Thin limestone layer somewhat arenaceous in 



texture 10 



d2 Limestone (marble layer) 1 4 



d 1 Highly crystalline crinoidal lime sandrock with 

 conglomeratic character, due to fragments of 

 Favosites and Stroma topora. Xo complete 



heads were observed 3 2 



Total Cobleskill 5 4 



Brayman shales (c) exposed on roadside 1 



2 Section in Vroman's quarry 



This is from 400-500 feet south of the point 

 where the Cobleskill crops out on the road leading 

 easl from Schoharie postoffiee. The 

 quarry lias been opened in the terrace 

 formed by the Cobleskill and Tx>wer Ron- 

 doul beds and in the lower part 

 of which i lie BrowD quarry is 



Fig-. 190 Section of Vroman's quarry 



situated. The beds exposed in 

 this quarry belong to the Rondont scries km. beds el, e2 and e3 

 being absenl here, but exposed in the Brown quarry. 



