LOW£R SILURIAN SYStEM Oi? EASf ERN kONTGOMERY CO. 44I 



point which drops off abruptly to the east but has very little slope 

 to the west. On the northeastern corner of this hill are extensive 

 quarries and the place may well be called Quarry hill. A section 

 was measured extending from the river level at Crane's village one 

 mile south to the top of the hill. 



46A Section from Crane's village to the top of dnarry hill 



A^ Thin bedded, dark blue limestone often of 

 crystaUine structure. Abounds in fossils including 

 Asaphus platycephalus Stokes and 

 Rafinesquina alternata (Con.) Hall 

 and Clarke. Trenton. 5'=^i8' 



A^ Grayish blue limestone containing Col- 

 umnaria alveolata Goldfuss and an abund- 

 ance of crinoi(l segments. Near the top frag- 

 ments of rock in all respects similar to Calciferous 

 sandrock are imbedded in the limestone. Trenton. i' 6''=4I3' 



A*^ Dark blue fine grained, lumpy, thick bedded 

 limestone containing Columnaria alveo- 

 lata. In the western part of the quarry the same 

 layers become more crystalline in grain and grayish / 



in color. Black river. 7'-9'=4iiJ' 



A^ Dove colored Hmestone^ fine grained with 

 conchoidal fracture. In thin layers weathering 

 somewhat unevenly. Birdseye. 2^=402^ 



A^ Mostly covered but exposed at the top in the 

 side of Quarry hill and in the floor of the eastern 

 part of the quarry, and at the base in the highway 

 near the Evakill.^ Somewhat arenaceous lime- 

 stone; less arenaceous at the top. i2o'==400' 



A^ Medium to thin bedded shaly arenaceous 

 limestone with fucoidal markings specially near 

 the top where the color is dark blue and the 

 weathering very light ash-gray. Contains iron py- 

 rites. Base at level of Evakill. Fucoidal mem- 

 ber of Calciferous. i3o'=28o' 



^This creek is left without any name on the Amsterdam topographic sheet, but 

 the creek which empties into the Mohawk at Crane's village is known as the Bra- 

 kiU. 



