4G8 



GEOLOGY. 



ice, at any stage when its end or edges remained nearly constant in 

 position for a time, there are heavy accumulations of drift, lateral- 

 moraines often being more conspicuous than terminal; (5) the valleys 



/ 



V 



Tokevanna 



s e ir k v 



-ft 



e 



Lamotte 

 Pk 







N J 



Wks 



tytLoveni'W 



/ 



m 



o / 



-s^--W a\, . 



wffi 

















T 



R 



E 







r 





%*£ 



I X T A. 



S E R V A T I Q v 







Fig. 548. — Glacial cirques in the Uinta Mountains. (Hayden Peak quadrangle, 



U. S. Geol. Surv.) 



contain lakes (PL XIX, Vol. I), some of which occupy rock basins 

 in the cirques, and some occupy basins produced by drift dams in 

 the valleys below the cirques; and (6) valley trains or outwash plains 



