﻿GLACIAL STUDIES IX CANADIAN ROCKIES 



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discharge across this delta were made at 9:00 \. \i. and 6:00 r. m., 

 after a week of minimum and another of maximum activity. Just 

 at the glacier it was found impracticable to get the volume of water 

 discharged, 1 mt the sediment carried per cu. ft. was found to be 

 .230 oz. for the period of minimum melting, during which time .671 

 in. nf rain fell near the nose. For the maximum period the amount 



Fig. 68. — Stony till, left lateral moraine of Victoria glacier. 



of sediment per cu. ft. was found to be .506 oz., with .03 in. of 

 precipitation. During the former period there was delivered to the 

 lake /3 cu. ft. of water per second and during the latter 93 cu. ft. 

 The total amount of sediment brought from the glacier daily was 

 estimated as six tons for the maximum period and about one-third 

 this amount for the minimum. 



7. Surface Moraines. — The two lateral moraines of the Victoria 

 are made up essentially of a stony till, consisting of bruised and 

 glaciated rock fragments, embedded in a matrix of bluish clay 

 (fig. 68). Upon becoming saturated with water mud flows occur 

 which carry forward fragments of considerable size (fig. 69). < >ver 

 this material, which has been produced subglacially, there is a sprink- 

 ling of unglaciated, angular fragments, such as are more charac- 

 teristic of surface moraines. This ground-morainic material for the 

 left lateral has been manufactured beneath the extensive hanging- 

 glacier which cloaks the entire eastern slope of Mt. Victoria, having 



