Scrambles amongst the Alps in the Years 1860-69 (1871)
Whymper, Edward · John Murray (London) · leaf 413
ST THE ALPS. CHAP, XVIII. The weathering of the walls of crevasses, which obsewres the internal structure of the glacier, has led some to conclude that the stratification which is seen in the higher glacier-regions is obliterated in the lower ones. Others, Agassiz and Mr. John Ball for example,… … we are not, upon that account, entitled to conclude that the ori- ginal structure of the ice has been obliterated. There are thou- sands of crevasses in the upper regions upon whose walls no traces of bedding are apparent, and we might say, with equal unreason- ableness, that it was obliterated…
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