PERMO-CARBONIFEROUS GLACIAL DEPOSITS 22m 
lutely different section, in which a bowlder conglomerate rudely 
stratified in parts rises as a ridge about 30 meters high. This is of 
a kamelike character and includes sand, gravel, and stones of all 
sizes up to a meter in diameter. They are often rounded, but may 
be of various shapes and consist of many kinds of rocks—granite, 
FIG. 2. 
From tillite south of San Juan, Argentina 
gneiss, quartzite, vein quartz, sandstone, and limestone having 
been observed. Striated stones seem rare, only one poorly marked 
one having been found. It may be remarked, however, that in 
Pleistocene kames also it is unusual to find distinctly striated 
stones. Beneath the kamelike bed there are two or three meters 
of sandstone, and across a wide valley to the south a cliff shows 
six or seven meters of the conglomerate underlying, apparently 
