Land Ice of Arctic and Sub-Arctic Regions 



57 



of the surface. The formation of the bank is well shown by Herz's 

 photographs. He did not go to the opposite side of the valley but 

 noticed there, as on the left side, a ' Taiga ' (wooded terrace) which 

 runs along the river as a broad strip of land, and which he dis- 

 tinguishes from the lowlands or bottoms of the newest alluvial 

 deposits of the Beresowka. 



" From this point, up and down, the valley of the Beresowka 

 becomes narrower, the mountains east and west get nearer to each 

 other and they bound a large expansion of the valley similar to a 



I : 840 o 



Figure 2. — Geologic map of the Beresowka valley about place where the 

 mammoth was found. Small square indicates the position the carcass was in. 

 [After Tolmatschow, op. cit., fig. i, p. 425.] 



1. Recent alluvial deposits of the Beresowka. 



2. Older terrace deposits " Taiga." 



3. Porphyry of nearby hills. 



lake. The older formation of the left terrace is what remains of 

 a deposit that once filled the whole lake-like expanse of the valley 

 of the Beresowka. According to Herz's opinion the deposits of 

 the left bank originally filled the whole valley, but have been swept 

 away by the Beresowka, so that only small portions remain and 

 these will soon disappear. Although the right side of the valley 

 was not examined its ' Taiga ' terrace corresponds, orographically, 

 to the left terrace. 



