Paleoseismology of Utah, Volume 12: Neotectonics of Bear Lake Valley, Utah and Idaho; a preliminary assessment (MP 03-4)

MP 034
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Paleoseismic Studies

By: J. P. McCalpin

This Utah Geological Survey Miscellaneous Publication, Neotectonics of Bear Lake Valley, Utah and Idaho; A Preliminary Assessment, is the twelfth report in the Paleoseismology of Utah series. This series makes the results of paleoseismic investigations in Utah available to geoscientists, engineers, planners, public officials, and the general public. These studies provide critical information of paleoearthquake parameters such as timing, recurrence, displacement, slip rate, and fault geometry, which can be used to characterize potential seismic sources and evaluate the long-term seismic hazard presented by Utah.s Quaternary faults.

This report presents the results of a preliminary evaluation of the East Bear Lake (EBF) and West Bear Lake (WBF) fault zones, which bound the east and west sides, respectively, of the Bear Lake Valley. The Bear Lake Valley straddles the Utah/Idaho border northeast of Logan, Utah. The results of this study show that both the EBF and the WBF have experienced surface-faulting earthquakes in the recent geologic past and therefore represent an ongoing seismic hazard to northeastern Utah and southeastern Idaho.

Other Information:
Published: 2003
Pages: 43 p.
Location: Cache County
Media Type: Paper Publication

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