Civil Thinking

Geologic development:

A. Tectonic forces tilt and fold sedimentary rock strata.  Slip occurs at contacts between units.
B. River erosion debutresses the toe of the slope and landslide slips on the contact.
C. With continued river erosion, deeper contacts can slip.
D. Older landslide deposits stabilize as they become drained.
E. Until they are disturbed by construction…


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