Faulted Region of the Mohawk. 



41 



may be traced for a short distance, but the relations east and 

 north from Dolgeville are hidden under a wide area of heavy 

 drift cover. 



Figure 5.— Cross sections along East Canada creek, below Dolgeville. 

 and Birdseye limestones . C. Calciferous. 



U. Utica slate. T. Trenton 



St. Johnsmlle Faults. — Yanuxem described some features of 

 the St. Johnsville region and recognized two, if not more, series 

 of uplifts, but stated that there was considerable obscurity in 

 their relations which he had not had time to unravel. It appears 

 that there is one fault which branches and curves in an unique 

 manner for a dislocation that is apparently not due to overthrust. 

 The relations are fairly well exposed, and 1 believe the true nature 

 of the dislocation is shown in plate 2. 

 6 



