BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



VOL. 1, PP. 453-468, PLS. 10 APRIL 23, 1890 



THE STRATIGRAPHY OF THE " QUEBEC GROUP." 



BY R. W. ELLS, LL. D. 

 (Read by abstract before the Society December 28, 1889.) 



CONTENTS. 



Page. 

 Introduction 453 



Historical Review 454 



Bigsby's View 454 



Bayfield's View 454 



Logan and Richardson 454 



Hunt's Studies 455 



The Founding of the " Quebec Group " 455 



Richardson's later Work 457 



Hunt's later View 457 



Selwyn's Classification 457 



The Gaspe Studies 458 



Recent Investigations 458 



Work in the Eastern Townships ._ 458 



Work on the St. Lawrence 460 



The Succession about Levis and Quebec 464 



The Stratigraphical Succession 464 



The Paleontological Succession 465 



Conclusions 466 



Introduction. 



The discussion of the various opinions which have been put forth from 

 time to time during the last half century as to the age and geological posi- 

 tion of the different members of the peculiar series of rocks known among 

 geologists generally by the term " Quebec group," would be an undertaking 

 too great for the limits of an ordinary paper. It is, moreover, to a great 

 extent rendered unnecessary in this place from the fact that the history has 

 already been given with considerable completeness in several publications, 

 among which may be chiefly enumerated papers by Dr. T. Sterry Hunt and 

 Professor Jules Marcou, as well as by the writer, who, in the volume of the 

 Geological Survey of Canada, just issued ( l<S87-'88), has gone into the sub- 

 ject with some detail. This course was deemed advisable, and in fact almost 



LX— Bun.. Gkol. Soc. Am., Vol. 1, 1889. (^53) 



