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Sheetfloods and streamfloods

Davis, William Morris (1938) Sheetfloods and streamfloods. Geological Society of America Bulletin, 49 (9). pp. 1337-1416. ISSN 0016-7606. https://resolver.caltech.edu/CaltechAUTHORS:20191126-085804478

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Abstract

Repeated excursions in the Mohave Desert region of southeastern California have led to this comprehensive summary of the work of sheetfloods and streamfloods in arid physiographic cycles. Comparisons are also made with accounts of a few other arid regions, especially those in which better examples of external drainage or locally degrading base levels have been observed. In regard to the controversial question of the importance of lateral erosion in deserts, it is concluded, at least for the region under observation, that lateral erosion is of practically no importance, except in the mountains and in the few other places where there are well-developed washes or water courses. Sheetfloods, not streamfloods, normally grade piedmont slopes and the fan bays where desert mountain valleys open out between diminishing spurs. The areas subject to sheetfloods there are enlarged mainly by back-weathering subaerial degradation of the mountain and spur slopes, essentially in the manner analyzed by Lawson (1915). Where gradual uplift, degrading base levels, or other moderate changes allow streamfloods to take mild possession of these graded areas, their work too is almost entirely down-wearing rather than lateral cutting.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1130/gsab-49-1337DOIArticle
Additional Information:© 1938 Geological Society of America.
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Balch Graduate School of the Geological Sciences264
Issue or Number:9
Record Number:CaltechAUTHORS:20191126-085804478
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20191126-085804478
Official Citation:WILLIAM MORRIS DAVIS; Sheetfloods and streamfloods. GSA Bulletin ; 49 (9): 1337–1416. doi: https://doi.org/10.1130/GSAB-49-1337
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:100055
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:26 Nov 2019 19:56
Last Modified:21 Apr 2020 22:50

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