GEOLOGY AND PALEONTOLOGY OF THE SCLIOHARIE VALLEY 291 



Feet Total 



Transition beds 12-413 



Thinner bedded limestones than the above which 

 are transitional in lithologic and faunal char- 

 acters from the Pentamerus [Coeymans] to the 

 Tentacalite [Manlins] limestone. 



Manlius limestones 34-101 



Dark blue, thin bedded limestones, the layers of 

 which are generally from one to three inches in 

 thickness and break with a ringing sound. 

 These thin limestones form the lower part of 

 the vertical cliff from New Salem around the 

 northern end of the Helderbergs to Altamont. 

 The fossils are: 



1 Tentaculites gj-racantJius (Eaton) Hall aa 



2 Spirifer vanuxemi Hall aa 



3 Leperditia alta (Con.) Hall aa 



4 Megamboiiia aviciiloidea Hall r 



5 Modiolopsis (?) diibia Hall r 



6 Chaetetes (Monotrypella) arbusculus Hall r 



Covered by soil and talus 10-367 



Lorraine 'beds 57-357 



Bluish gray, fairly massive sandstones which 



alternate with dark colored argillaceous shales. 

 Covered by soil, drift and talus to the foot of the 



hill 300-300 



23 Section south of New Salem 



Prosser and Rowe 



In the above section the contact of the Lorraine beds and the 

 overlying limestones is covered, but in a small glen west of 

 the house of Rensselaer Markel ^ mile south of New iSalem the 

 contact is clearly shown. The section of this glen is as follows 

 [descending order] : 



Feet Total 



Coeymans (partly exposed) 38-180 



Massive limestone forming cliff at the head of the 

 run which is the southerly continuation of the 

 lower cliff directly Avest of New Salem. 



Transitional 12J-142 



Transitional layers from the Pentamerus [Coey- 

 mans] to the Tentaculite [Manlius] limestone, 

 containing Spirifer vanuxemi Hall and 

 Leperditia alta (Con.) Hall. 



