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National Institute of Informatics - Digital Silk Road Project
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| IIIF Color HighRes |
| Explorations in Turkestan : Expedition of 1904 : vol.2 |
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| Thatched Roofs in the Sardai-mione Gorge. | |
| A Sled in the Hissar Valley. |
Citation Information
DESERTS.
275
THE ZERAFSHAN VALLEY.
On the Northern Pamir and in the Alai valley we found a good field for glaciology, and would, off-hand, expect to find record of corresponding climatic change on outlying ranges, nearby members of the Tian Shan. But although no such extreme difference as the variation of from one to six glacial epochs, found by
Fig. 452.—Thatched Roofs in the Sardai-miona Gorge.
Mr. Huntington, was met with on my journey, there was an unmistakable discordance between certain valleys. We hope to show that a differential glacial record was inevitable on mountains subjected to the differential uplift such as we find recorded by various degrees of block-faulting and tilting. With the Alai Mountains, we have a region that has been uplifted some thousands of 1
feet, faulted on the north and bor-
dered
there by rows of,uptilted 1
piedmonts. It is a significant fact that .Mr. Huntington found a uni-
versal correspondence of variations #~ '
in climate (by attributing valléy ter-
races to climatic change) and yet. ;}~,` 4
no correspondence at all between . - ; ; t
valley glaciers. We can not, however, believe that the glaciers of Central Asia were independent of Central Asia's climatic change. If it were merely a disagreement between valleys of different elevation,
between high valleys now occupied and low ones now glacier empty and between empty valleys of different height, the matter might be argued independent of uplift. But such is not the case. Out of twenty-four valleys scarcely any two of the same height agree; and there are instances of valleys near together and of the same height disagreeing several epochs. It will be understood that most
Fig. 453.—A Sled in the Hissar Valley.
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