﻿24 Bulletin 19 74 



Five miles east of Schoharie, in the vicinity of Gallupville, ex- 

 cellent exposures are seen in the pasture lot south of the Berne 

 road. So far as could be judged from a hasty inspection, the 

 Manlius beds here resemble their westward extension at Scho- 

 harie and Howe's Cave. 



Summing up the general characteristics of the Manlius 

 in the Schoharie region we note : ( 1 ) The decrease in 

 number of specimens of brachiopods in the upper portion of the 

 stage, save the very top layer, which we have called "transition" 

 and may as well be referred to the Coeymans. (2) The Stropheo- 

 donta layers become again very noticeable, resembling their equival- 

 ents in the Manlius and Union Springs sections. (3) Tentaculites 

 gyraca?ithns begins to make its appearance in great numbers, 

 especially in the thin, gray, shaly laminae. (4) Stromato- 

 pora, though present in several layers does not appear prominent- 

 ly in any. In fact its presence would often scarcely be suspected un- 

 less a special search were made for it. (5) The sum total thick- 

 ness of the Manlius stage, including the Rondout and .Cobleskill 

 substages, is materially decreasing eastward. 



VIII Helderbergs 



General section. — The general section presented as No. 8, PI. 1, 

 is based largely on the outcrops near Indian Ladder. Es- 

 pecially is this true of the few feet at base, including the Hud- 

 son River shales and sandstones. 



Special sections. — The Altamont — Thompson's L,ake road about 

 2 miles south of the former locality, passes over the northern 

 edge of the Helderberg escarpment. Old quarries by the wayside 

 reveal more or less complete sections of the Manlius stage. Just 

 west of the road we note : 



Section 2 miles south of Altamont 



Ft. Thick 



1 . A transition brachiopod fauna in a Stromatoporoid lime- 

 stone 5.7 



2. Blue limestone with Gasteropods 3.0 



3. Stromatopora in limestone 2.5 



4. Buff-colored impure limestone 5.0 



5. Hard blue limestone with Tentaculites, Leperditia, and 



Sp. vanuxemi 8.3 



