



Published monthly by the 



• 







New Yorjc State Education Department 







1 1 1 1 imfT^iiii. 







SEPTEMBER 



I9„7 



New York State Museum 



John M. Clarke, Director 



BulletinjtiS 

 GEOLOGY 14 '^ 



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GEOLOGY OF THE LONG LAKE 

 QUADRANGLE 



BY / ■'. V '^ ■' 



H. P. GUSHING / " •7gg^,0 5 



PAGE 



Acknowledgment 451 



Situation and character 451 



General geology 453 



Rocks... 459 



Rock structures 484 



PAGE 



Topography 490 



Glaciation 495 



Economic geology 502 



Petrography of the I'ocks 503 



Index 529 



ALBANY 



NEW YORK STATE EDUCATION DEPARTMENT 

 1907 



Mi7om-06 1000 



Price 25 cents 



