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 



e 7 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 earth}^, with Favosites and Stro- 



matopora, and with Camarotoechia? 



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



e 3 Clayey weathered layer with Favosites 4 



e 2 Argillaceous lime mudrock with Favosites and 



Camarotoechia? la mellata 1 10 



e 1 Shaly and clayey layers 10 



Cobleskill 



d 3 Thin limestone layer somewhat arenaceous in 



texture 10 



d 2 Limestone (marble layer) 1 4 



d 1 Highly crystalline crinoidal lime sandrock with 

 conglomeratic character, due to fragments of 

 Favosites and Stromatopora. No 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 



ea- r^ wherc the Cobleskill crops out on the road leading 



^* ^^ east from Schoharie postoffice. The 



e7 — - . - 



x^^ quarry has been opened in the terrace 

 formed bv the Cobleskill and Lower Ron- 





dout beds and in the lower part 



=^^^ of which the Brown quarry is 



Fig. 190 Section of Vroman's quarry 



situated. The beds exposed in 

 this quarry belong to the Rondout series (e), beds el, e2 and e3 

 being absent here, but exposed in the Brown quarry. 



