state Museum 



Plate 11 



Bulletin 77 



H. P. Gushing, photo. 



Fall in creek over the pre-Cambrian at tbe Little Falls fault line 2 miles 

 west of Dolgeville. The creek is in a postglacial valley, and has only cut 

 hack its fall 100 yards from the fault plane, the volume being slight and 

 the rocks very resistant. The perpendicular walls of the gorge below are 

 due to the joint planes, and the large loose blocks are dislodged mainly by 

 frost. 



