BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



VOL. 11, PP. 433-448, PLS. 30-39 JUNE 21, 1900 



GLACIATION OF MOUNT KTAADN, MAINE* 



BY R. S. TARR 



(Presented before the Society December SO, 1899) 

 CONTENTS 



Page 



Nature of the work 433. 



Glaciation of the high mountains 434 



Previous announcements of valley glaciers 438 



Topography of mount Ktaadn. . 439 



Evidence of valley glaciers 441 



Possible existence of other glaciers 444 



A conception of the Glacial Period in Maine , 445 



Summary 447 



Nature of the Work 



In 1897 I spent a month among the mountains of the highland region 

 of Maine, ascending a number of the higher peaks, notably mount Abra- 

 ham, in the Dead River plantation, and mount Ktaadn. The chief object 

 of this expedition was to satisf}^ myself, from personal stud} r , as to the 

 probable succession Qf events near the close of the Glacial Period in the 

 New England region. 



Some American writers have called attention to the evidence of local 

 glaciation among the New England mountains, but of late years very 

 little has been done toward a study of these phenomena. Evidence has 

 also been brought forward seeming to prove that the continental glacier 

 passed from Canada across the Saint Lawrence and over the highest New 

 England mountains ; yet certain Canadian geologists have held that the 

 Labrador glacier did not cross the Saint Lawrence valley and invade the 

 New England states, but that, on the contrary, glaciers spread out from 

 separate centers, both from New England and- Labrador, reaching toward 

 and into the Saint Lawrence valley. The facts which the Canadian geol- 

 ogists have brought forward in support of this view, together with the 



* In this work I was assisted in 1897 by R. D. Evans and R. P. Tarr and in 1899 by J. 0. Martin 

 and F. S. Mills, all Cornell students. 



LXII— Bull. Geol. Soc. Am., Vol. 11, 1899 (433) 



