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Geomorphology of Mountainous Deserts

Davis, W. M. (1933) Geomorphology of Mountainous Deserts. In: Copper Resources of the World. International Union of Geological Sciences , Washington, DC, pp. 1-12.

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The peculiar land forms of the desert are due largely (1) to the paucity of plant growth, in consequence of which (2) disintegrated rock, produced more by physical than by chemical processes, which (3) vary with rock nature (hence granitic rocks assume forms of special interest), does not remain near its source long enough in the earlier stages of erosion to be reduced to very fine texture before (4) it is carried by stream floods or sheet floods toward or to (5) playa basins of rising base-level; but in an advanced stage of the arid cycle (6) the playa surface may be lowered by the wind, whereupon the rock slopes previously weathered down to sheet-flood grade and buried with sheet-flood waste will be (7) trenched by stream floods with respect to the sinking baselevel, and the buried rock floors will be laid bare until again reduced to sheet-flood grade. But (8) in deserts draining to the ocean these various processes will work with respect to a relatively fixed baselevel; also (9) in deserts where the action of water floods is dominated by wind action, the carving of the surface will be in part independent of any baselevel.

Item Type:Book Section
Additional Information:© 1933 International Union of Geological Sciences.
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Balch Graduate School of the Geological Sciences188
Record Number:CaltechAUTHORS:20200219-134518962
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ID Code:101394
Deposited By: Tony Diaz
Deposited On:19 Feb 2020 21:54
Last Modified:19 Feb 2020 21:54

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