New York State Museum Bulletin 



Entered as second-class matter November 27, 1915, at the Post Office at ABtoil^. Y., 

 under the act of August 24, 1912 



Published monthly by The University of the State 



ofiUBRAB^ 



' Nos. 211, 212 



ALBANY, N. Y. 



July- August, 191 8 



The University of the State of New York 

 ■^ New York State Museum 



John M. Clarke, Director 



GEOLOGY OF THE LAKE PLACID QUADRANGLE 



By WILLIAM J. MILLER 



WITH A CHAPTER ON THE PLEISTOCENE GEOLOGY 



By HAROLD L. ALLING 



Introduction 5 



General geography and geology .... 9 



The Precambrian rocks. 12 



Structural geology. 64 



PAGE 



Pleistocene geology. H. L. Ailing 71 



Introduction 71 



Historical geology 96 



Stone quarries and mines 100 



Index ;; 103 





t^a^l ^-4^%"' 



Mi tgr-N 18-1 sod 



ALBANY 



THE UNIVERSITY OF THE STATE OF NEW VOJK 



1919 



