Sections and Thickness of the Lower Silurian Formations on 

 West Canada Creek and in the Mohawk Valley. 



By Charles S. Peosser and Edgar R. Cumings. 



Contents: Introduction, p. 619. Trenton Falls, p. 620; Section of Trenton Falls gorge, p. 620. 

 The Newport Sections, p. 627; Section of the Newport railroad cut, p. 627; Section of the Moshier 

 quarry, p. 631. Little Falls, p. 632; Section northeast of Little Falls, p. 633; Section of the Cook 

 quarry, p. 636. Canajoharie and Palatine Bridge, p. 637; Shaper quarry, p. 637; Canajoharie creek 

 section, p. 638; The Mohawk Valley Stone Co. quarry, p. 640. Sprakers, p. 641; Flat creek section, 

 p. 641; West Shore railroad-cut section, p. 642; Section at Yosts, p. 643. Tribes Hill and Fort 

 Hunter, p. 644; North side of the Mohawk, p. 644; South side of the Mohawk, p. 646. The Amster- 

 dam-Hoffman Region, p. 647; Section along Morphy creek to the top of Adebahr hill, p. 647; 

 Minaville section, p. 649 ; The Eva's kill section, p. 652 ; Section opposite Crane's Village on the 

 south side of the Mohawk river, p. 653; Hoffman and Van Epps hill section, p. 655; Patterson- 

 ville section, p. 656. 



Introduction. 



A recent paper describing the geology of the vicinity of Trenton Falls 

 contains this statement: "The writer was unable to find a detailed tabula- 

 tion of the stratigraphy or local geological boundaries of the type section 

 [of the Trenton formation]." * 



In that paper its author has given a detailed account of -the strati- 

 graphy and faunas of the various zones along the gorge of West Canada 

 creek, at Trenton Falls, based upon extensive collections of fossils from the 

 entire length of the gorge; these were carefully identified and assigned to the 

 various zones into which he divided the section. In a recent examination of 

 the gorge, made by the writers, some differences in the stratigraphic details 

 were noted, and in order that the description of this interesting formation at 

 its typical locality may be as accurate as possible, it is considered advisable 

 to publish the following section and, in addition, to give some account of the 

 formations in the vicinity of Newport on West Canada creek, which were 

 also described by Mr. White. 



* The Faunas of the Upper Ordovician strata at Trenton Falls, Oneida County, New York ; by Theodore G. White Trans, 

 actions New York Academy of Sciences, Vol. XV, April, 1896, p. 71. 



619 



