6io 



ELLSWORTH HUNTINGTON 



sinter. The latter occurs on an isolated hill of schist east of 

 Tukkung in the middle of the south side of the lake (Fig g A), 

 and again on a marble spur in the outlet valley close to the lip. It 

 forms a thin coating on the surface of rocks which had been well 

 smoothed and rounded by the previous glaciation. At the same level 

 there are other evidences of the high stand of the lake. In a general 

 view from almost any point a distinct line can be seen at a height 

 of about 200 feet above the present strand wherever the lake shores 

 consist of solid rock, as appears at the right of Fig. i. In most places 

 it is a mere scratch, indistinguishable close at hand, though visible in 

 a general view; elsewhere it forms a slight notch, or even a very 



insignificant bench 

 ^B and bluff. Below it, 

 I in favorable loca- 



tions, two or three 

 L * ■ '■'".;■ "'/^'^ still fainter lines ap- 



-o/M pear upon the steep 



• -^■- "*" ••-«... rocky shores. The 



parallelism of the 

 lines to one another 

 and to the present 

 strand, their con- 

 tinuity around the 

 lake, and their utter 

 disregard of the 

 structure of the rocks 

 on which they lie, 

 make it practically 

 certain that they are 

 strands marking former short-hved high levels of the lake. 



When the lines are followed into some of the minor ravines where 

 erosion proceeds slowly, this conclusion is supported. Here, at a 

 height of about 200 feet, there are a number of httle fans hung upon 

 the side of the mountain as though they had been deposited when 

 the water stood much higher than now, and nipped off into terraces 

 in front as though the water had retired step by step. Such terraced 

 fans, hke the one at B on the extreme right of Fig. i, may be seen 



Fig. 9. — The lower set of beaches in a cove in the 

 middle of the south side of Lake Pangong. The bowlder 

 in the foreground, 12 feet in diameter, consists of granite. 

 It was brought by a glacier to its present position on a 

 slope of schist 200 feet above the lake. 



