An engineering analysis of the Elder Creek landslide, Alpine County, California
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Authors
Wells , Mary E
Issue Date
1991
Type
Thesis
Language
en_US
Keywords
Elder Creek Landslide , Failed Material , Relief Peak Formation , Eureka Valley Formation , Table Mountain Formation , Stanislaus Group , Circular Failure , Topples And Flows , Disturbed Material , Rock Strength , Lahar , Shear Stress , High Water Table , Tioga Glaciation , Faults , Leads , Initial Catastrophic Failure , Equilibrium , Downslope Movement , Mackay Theses and Dissertations Grant Collection
Alternative Title
Abstract
The Elder Creek Landslide is comprised of failed material from the Relief Peak Formation and from the Eureka Valley and Table Mountain Formations of the Stanislaus Group. The total volume of failed material is approximately 2.67 x 106 cubic yards. The failure is a complex movement, a large circular failure with topples and flows, which has moved approximately 2 00 feet vertically with an angle of rotation of 15 degrees. There has been subsequent failures within the disturbed material. A unique set of circumstances, including a reduction of rock strength of the Relief Peak Formation lahar and an increase in shear stress from a high water table at the end of Tioga glaciation and movement along a fault, lead to the initial catastrophic failure. The failure has reached a state of equilibrium and is undergoing minor downslope movement related to increases in precipitation.
Description
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Citation
Publisher
University of Nevada, Reno
License
In Copyright(All Rights Reserved)