750 STEPHEN R. CAPPS 



upon the problem of whether or not there have been recurrent 

 glacial stages in Alaska. The first of these problems has been 

 discussed elsewhere/ and the mere statement will suffice here that 

 the last great ice advance was probably contemporaneous with 

 the Wisconsin continental glaciation. 



Near the source of White River in Russell Glacier and lying 

 between Lime and Solo creeks, two of its tributaries, there are 

 certain foothills of the mountains which in 1908 were seen by 

 the writer to consist for the most part of gravels, but no careful 

 study of this section was then made. In the summer of 1914 a 



v^ vv > *> f>. -^- V 



Fig. I — Diagrammatic section of older glacial deposits near head of White River 



single day was available in which to revisit this locality, and heav)^ 

 rains and fog during that day prevented as thorough an examina- 

 tion as was desirable. The section shown in the accompanying 

 figure (Fig. i) is therefore not complete and the thicknesses given 

 are only approximate, but nevertheless certain important facts are 

 made clear. In the section to be described the exposure is unusually 

 good, the surface of the hills being almost entirely free from vege- 

 tation, and cut by a number of clean, steep-sided gullies so that 

 practically every foot of the deposit is exposed (Fig. 2). 



The section, covering a vertical range of 1,150 feet, shows a 

 great thickness of unconsolidated gravel beds, with some soft shales 



' S. R. Capps, "An Estimate of the Age of the Last Great Glaciation in Alaska," 

 Jour. Wash. Acad. ScL, V, No. 4 (1915), 108-15. 



