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Influence of climate on progressive hillslope failure in Redwood Creek Valley, northwestern California

Open-File Report 83-259

By:
, , and

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Abstract

Both creep and earthflow processes control hillslope erosion over large parts of the Redwood Creek basin. The type of process and displacement rates are largely dependent on underlying bedrock type and precipitation input. Progressive creep with rates ranging from 1.0 to 2.5 mm/a dominates on slopes west of the Grogen fault underlain by sheared and foliated schists. Movement appears to respond primarily to annual increments of precipitation. Complex earthflows occur predominantly on slopes east of the Grogen fault underlain by sheared graywacke and mudstone. Movement rates range from 3.0 to 131.0 mm/a and characteristically display dominant rainy season movement.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Influence of climate on progressive hillslope failure in Redwood Creek Valley, northwestern California
Series title:
Open-File Report
Series number:
83-259
Edition:
-
Year Published:
1983
Language:
ENGLISH
Publisher:
U.S. Geological Survey ; Open-File Services Section [distributor],
Description:
49 p. :ill. ;28 cm.