New York State Museum Bulletin 



Entered as second-class matter November 27, 191S at the Post Office at Albany, N. Y., 

 under the act of August 24, 1912 



Published monthly by The University of the State of New York 



Nos. 215, 216 



ALBANY, N.Y. November-December 1918 



The University of the State of New York 

 New York State Museum 



John M. Clarke, Director 



GLACIAL GEOLOGY OF THE COHOES 

 QUADRANGLE 



By JAMES H. STOLLER 



PAGE 



Introduction 5 



Physical geography arid general 



geology. 6 



Description and interpretation of 



thedeposits ., 12 



The Lake Albany deposits 17 



Development of the upper terrace 19 



Development of the lower terrace 21 



PAGE 



Development of theHoosic terraces 26 



Erosion terraces 27 



Evidence bearing on postglacial 

 history of Hudson-Champlain 



valley 29 



Recent deposits 39 



Review and summary 41 



Index 49 



ALBANY 



THE UNIVERSITY OF THE STATE OF NEW YORK 



1920 



Mii8r-Ni8-iSoo 



