BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 

 Vol. 2, pp. 477-502, PL. 20. APRIL 30, 1891 



ON THE GEOLOGY OF QUEBEC AND ENVIRONS. 



BY HENRY M. AMI, OF THE GEOLOGICAL SURVEY OF CANADA. 



{Read before ihe Society December 31, 1890.) 



CONTENTS. 



Pagp. 



Introduction 478 



The Terranes exposed about Quebec 480 



Description of the Terranes 481 



The Laurentian or Archean 481 



The Trenton 482 



Lorette 482 



Charlesbourg 482 



Beauport 483 



Montmorency 483 



Pointe-aux-Trembles 484 



The Utica 484 



Distribution 484 



Montmorency 485 



Beauport 485 



Charlesbourg 485 



Pointe-aux-Trembles 486 



The Lorraine 486 



General Character and Distribution , 486 



St. Nicholas 487 



Cote Sauvageau 487 



Montmorency Falls 487 



The Quebec \ 487 



The Quebec Massif 487 



Cote de la Negresse 488 



Montcalm Market 488 



Between Drill Shed and Grande Allee 489 



Keview 490 



The Levis 491 



TheSillery 493 



Conclusion 493 



Distribution of Genera and Species 495 



Discussion 501 



LXX-BuLL. Geol. Soc. Am., Vol. 2, 1890. (477) 



