LOWER SILURIAN SYSTEM OF EASTERN MONTGOMERY CO. 457 



46C Section opposite Crane's village on the south side of the 

 Mohawk river 



O- Medium to thin bedded, irregular layers of 

 calcareous sandrock, to canal level. In cut and 

 creek east of cut. 52'= 52' 



O Heavy bedded massive sandstone exposed in 

 cut and bed of creek just east of cut. 23'= 75' 



(y Mostly covered. Steel gray arenaceous lime- 

 stone containing flint. 8o'=i55' 



O Dove colored, very compact, even bedded, 

 fine grained limestone with conchoidal fracture 

 and weathering ash-white. Contains abundant 

 examples of Phytopsis tubulosa Hall. 

 Seen in lower quarry east of creek. Birdseye lime- 

 stone. 2'-4'^i59' 



C^ Dark bluish-black, massive, compact light- 

 weathering Hmestone, containing Black river 

 corals. Black river. Large quarry just east of 

 creek. 6'=i65' 



C^ Very compact dark blue limestone weathering 

 light bluish gray. Thick bedded, even and of 

 good quality for construction stone. Contains 

 Rafinesquina alternata (Con.) Hall and 

 Clarke, and other Trenton fossils. Large quarry 

 east of no. 5. Trenton. * 9'=I74' 



C^ Irregularly bedded thin layers, highly fossil- 

 iferous, resting upon those of no. 6. Trenton. I2'=i86' 



C^ Black smooth shale resting on the Trenton in the bed of the 

 creek, and as fragments occurring in the soil of the hills to the 

 south. Utica. 



At the railroad cut where no. i and 2 are exposed the layers of 

 no. I exhibit a rather abrupt bending amounting almost to a slight 

 fault. Near the eastern part of the cut the dip is about 10° E 

 and in the western part the dip is about 1° to the west. This sec- 

 tion furnishes the best outcrop of the Birdseye Hmestone to be 

 found in any part of this region. At this place the Birdseye pre- 

 sents its most typical characters. It is dove colored, impalpably 

 fine grained, with flat conchoidal fracture, smooth joint faces, and 



