h-n. 



^54 NEW YOEK STATE MUSEUM 



The character of these is mentioned in the county descriptions. 

 These limestones are equivalent to the Stockbridge, and repre^ 

 sent the Acadian-Trenton periods. 



A belt of Calciferous limestone extends from Saratoga west- 

 ward through Montgomery, Fulton and Herkimer counties. 



With the exception of the outcrops in the vicinity of Glen& 

 Palls the rock is usually very silicious and is known as sandrock. 



In Herkimer, Fulton, Saratoga and Montgomery counties this 

 formation underlies a considerable area and often forms cliffs 

 along the rivers and creeks. Its normal character is fairly con- 

 stant, viz a light bluish gray, fine grained, massively bedded 

 sandy limestone. The weathered surfaces are generally a dirty 

 buff. The following localities are noted by IT. H. Darton as. 

 affording good exposures.-^ 



About Middleville, Little Falls and northwestward along the 

 fault scarp, on East Canada creek, about St Johnsville, along 

 the Mohawk from Canajoharie to the ^ Eposes,' the quarries at 

 Tribeshill along the Mohawk from Amsterdam to Hoffmanns 

 ferry, also in southwestern Saratoga county and west of Saratoga 

 Springs. 



According to "Walcott^ the section of Calciferous near Sara- 

 toga involves: 



Massive layers of steel gray, more or less arenaceous lime- ^^^^ 



stone 125 



Massive bedded, slightly magnesian, gray and dove colored 



limestone * 35 



Unfossiliferous, impure, compact, more or less silicious lime- 

 stone 95 



Dark gray, evenly bedded liuiestone 50 



Oolitic limestone . . . . ; 30 



Cliazy 

 The Chazy limestone first appears at Saratoga and extends 

 northward along the Champlain valley to Montreal. The area 



1 13th an. reip't N. Y. state geol. p. 612. 



2 Bui. 81. U. S. geol. sur. p. 346. 



