440 NEW YO&K StATE MUSEUM 



of approximately lOO feet above river level. The rock here is some- 

 what thin bedded. A small quarry has been opened in medium 

 thick layers of Calciferous in the side of the hill back of the streets 

 about three quarters of a mile east of the depot, and the rock is 

 rather dark blue and fine grained. Near the point where the high- 

 way crosses the small creek a short distance east of this quarry is a 

 larger quarry in the same rock in the bed of the creek. Following 

 the course of this creek northward the lower members of the Tren- 

 ton stage are seen in the creek bed and banks at an altitude of about 

 220 feet above river level. Nearly due east from this point the 

 lower beds of the Trenton are again exposed in the bank of the 

 next creek east of the last mentioned creek, and at this point have 

 been quarried to some extent. Certain portions of the rock are 

 covered by a stalactitic incrustation. 



Near the southern bank of the same creek just east of the highway 

 which runs through Mannys Corners^ is a small quarry in which the 

 following section was measured (46B): 



B^ Thin bedded to shaly layers of limestone. 

 Trenton. i'6"=i3'6" 



32 Bluish gray, thick bedded limestone divid- 

 ing into thinner layers on long exposed surfaces. 

 Contains corals, brachiopods and crinoids. Tren- 

 ton. 9'=I2' 



B^ Massive, dark gray, thick bedded limestone 

 abounding in corals (Streptelasma). Black 

 river? 3'=3' 



No. I may belong to the Black river horizon, but is not referred 

 definitely to it inasmuch as the characteristic fossil (Column- 

 aria) of that horizon was not found. Not far east of this quarry 

 is a larger quarry in Trenton limestone of medium thin layers, dark 

 blue, semi-crystalline and showing very black on the upper surfaces 

 of the layers owing to the deposit of carbonaceous shale between 

 successive deposits of calcareous material. Such a black film of car- 

 bonaceous material is often to be seen on the surface of layers of the 

 Trenton limestone. About one half mile east by southeast of this 

 point the Trenton Hmestones form the cap of an insulated hill or 



iThis place 1b given on some of the earlier state maps and atlases as Mannas 

 Comers. 



