U. S. GEOLOGICAL SURVEY 



MONOGRAPH LIU PLATE XXV 



MiWo 



Each of the three parts of the profile runs in the direction of maximum uplift, about N.20°E. Measurements made by Goldthwait, 

 Johnston and Taylor, with wye level in 1U08. Except a small fragment at Wilson's, the Algonquin and lower beaches between Grand 

 Uend and Point Clark have all been cut r "— "• ' '-■- 



: away by the present lake 



• Beach ridge 



i I Observed variation in height of beach or terrace 



j Undercut bluff 



1 Cut terrace 



oaAO Obscure forms 



Altitudes in feet above sea level 



I 



— i ^ 'E 



* '!' = - 





111! ? 



«***; 



rr— ■, a'""^ 1 



-fe 



Nipissing beach 



« 



gtel^E 



:t 



'i 



■II- 



•-1 





** 



I 



■■ 



■■'■.->..■■■* ■■• 



ll ^ 



l" 3 I 



?Sl^ 



12 | 



i si i 



r. ■••: 



-i- 



C 



NE. 



PROFILE OF WARPED WATER PLANES ON THE EAST SIDE OF LAKE HURON IN CANADA 



