註釋 This 18-page report summarizes a recent UGS
project to characterize the relative level of activity of the Collinston
and Clarkston Mountain segments of the Wasatch fault zone. The project
involved geologic reconnaissance, scarp-profile measurement and
analysis, and empirical analysis of relations between surface rupture
length and vertical displacement. Results include estimates of the
timing of most recent surface faulting for both segments and estimates
of slip rate and earthquake magnitude for the Clarkston Mountain
segments. The report also includes a discussion of issues related to
using data from nearby Bonneville shoreline scarps to calibrate
diffusion-equation models of fault-scarp age. 