DEPOSITS ON KENNEDY RIDGE 703 



Creek. No earlier record bas been detected in tbe bistory of tbat stream. 

 Since tbat date, bowever, the valley bas been cut down 900 feet, a glacial 

 epoch bas intervened, and the channel bas recently been re-excavated and sunk 

 deeper in the subterrane. 



"Certain tabular drift surfaces between Swift Current and South Kennedy 

 creeks and on tbe northern slope of Yellow Mountain are probably not of tbe 

 Kennedy formation, but are outwash plains beyond moraines. Gravel mesas, 

 tbat are correlative with tbe Kennedy and may be included under tbe forma- 

 tion name, occur in Canada, one lying 6 to 8 miles north by west from Chief 

 Mountain and east of Belly River ; another, a group of three bills, occurring 

 cast of lower Waterton Lake, a few miles north of the boundary. The basis of 

 correlation in these two cases is general form, altitude, and constitution of tbe 

 masses, which were not, however, examined in detail." 



The character and relations of the deposit on the ridge between Swift- 

 current and South Kennedy creeks have "already been described. The 

 mesas in southern Alberta on the east sides of Belly Eiver and Waterton 

 Lake were seen but were not examined. Xeither was the tabular surface 

 on the slope of Yellow Mountain examined. 



In discussing the relations of the Kennedy gravel mesa, Mr. Willis 

 refers to it as ^^isolated and equalled in height among the outlying hills 

 only by a ridge of Cretaceous sandstone about 100 feet higher and 2 

 miles west of it." After examining the Kennedy gravel mesa, Mr. 

 Thomas and I crossed the intervening sag, which is nearly 300 feet in 

 depth, and ascended to the top of the south end of this Cretaceous ridge. 

 The smooth top of this eminence rises to an elevation 5,900 feet above 

 the sea, about 100 feet higher than the mesa to the east. On the west 

 the surface drops down between 300 and 400 feet to a sag in the divide 

 between Kennedy and Lees creeks, and beyond this sag the slope rises to 

 tlie foot of Chief Mountain about 2^ miles away. At the point of tlie 

 ridge facing Chief Mountain, in northeast quarter of section 26, town- 

 ship 37 north, range 15 west, fresh scarps have been produced by sliding 

 on the underlying Cretaceous sandstone and shale. These show the cap- 

 ping of the ridge to be 100 feet or more of typical glacial till. This till 

 is very stony, reddish below and gray above and very compact, probably 

 partially cemented. The pebbles and boulders, a large part of which arc 

 finely facetted and striated, are mostly from the Altyn limestone, with 

 subordinate amounts of greenish argillite and some red argillite. The 

 till is notably fresh in appearance, but I attribute this fact to its having 

 been so recently exposed. 



I do not know the height attained by the ice of the last Kennedy 

 Creek glacier. It may have spilled northward through the sags on either 

 side of this ridge, but I doubt if the ridge was overtopped; certainly the 



