Education Department Bulletin 



Published fortnightly by the University of the State of New York 



Entered as second-class matter June 24, 1908, at the Post Office at Albany, N. Y., under 

 the act of Congress of July 16, 1894 



No. 504 ALBANY, N. Y. October i, 19 n 



New York State Museum 



John M. Clarke, Director 



Museum Bulletin 152 



GEOLOGY OF THE HONEOYE-WAYLAND QUAD- 

 RANGLES 



By D. Dana Luther 



The Honeoye-Wayland quadrangles are included between the 

 lines of latitude 42 ° 30' and 43 ° north, and of longitude 77 ° 30' 

 and 77 45' west and contain one-eighth of a degree, or about 441 

 square miles of territory. 



The rocks of these quadrangles have an estimated aggregate 

 thickness of about 2660 feet, of which 15 10 feet are surface rocks 

 because of the difference in altitude between the lowest outcrop, 

 which is on Honeoye creek near Sibleyville at 590 feet A. T., and 

 the highest, at the top of Sand hill near the south line of the Wayland 

 quadrangle at 2100 feet A. T. Eleven hundred and fifty feet of 

 strata are brought to the surface by their elevation toward the north 

 at an average rate of about 33 feet per mile. 



These rocks embrace the following geological subdivisions or 

 formations, twenty-four in number, which are represented by dis- 

 tinctive colors on the accompanying map. 



