Geologic Hazards

By: S. N. Eldredge A beautifully designed and easy to understand publication discussing the geologic history of the Wasatch Fault and possible dangers it poses to anyone living nearby. This is a perfect introduction to the fault for anyone of...

By: I. G. Wong, W. J. Silva, D. Wright, S. S. Olig, F. X. Ashland, N. Gregor, and G. E. Christenson This map illustrates the estimated intensity of ground shaking that would occur in a magnitude 7 earthquake on the...

by Robert F. Biek, Peter D. Rowley, and David B. Hacker Southwest Utah contains what may be the largest landslide complex on land in the world. This complex includes three ancient side-by-side gigantic slides that cover an area roughly the...

By: Steve D. Bowman and Walter J. Arabasz This map shows earthquakes known to have occurred within and surrounding Utah from 1850 through December 2016 and mapped Quaternary faults considered to be earthquake sources. The faults shown on the map...

By: S. N. Eldredge Large, damaging earthquakes can happen in many parts of Utah. Therefore, when choosing where to live in this state, we should be aware of the earthquake risk. It is important to know what potential earthquake hazards...

By: J. L. Jarva The liquefaction-potential categories of Utah County are mapped based on local geology and subsurface soil and water conditions and depend on the probability of having an earthquake within a 100-year period that will be strong enough...

By: I. G. Wong, W. J. Silva, S. S. Olig, P. Thomas, D. Wright, F. X. Ashland, and N. Gregor The Salt Lake City metropolitan area is one of the most seismically hazardous urban areas in the interior of the...

“Putting Down Roots in Earthquake Country: Your Handbook for Earthquakes in Utah” is a comprehensive guide designed to help Utah residents understand and prepare for the seismic risks in their region. Published by the Utah Seismic Safety Commission, this handbook...

By: S. N. Eldredge and E. H. O'Brien This photo essay contains selected photos, brief text, and newspaper excerpts for four significant earthquakes in Utah, illustrating what happened and what could happen during an earthquake. Original photos were compiled by...

Edited by Steve D. Bowman and William R. Lund Summary The purpose of these guidelines for investigating geologic hazards and preparing engineering-geology reports, is to provide recommendations for appropriate, minimum investigative techniques, standards, and report content to ensure adequate geologic...

By: K. M. Harty and M. Lowe The purpose of this study is to evaluate the potential for future movement of the landslides during earthquakes to determine the hazard these features may pose. Goals of the study were to: (1)...

By: UGS Staff This map shows the location of faults in the Hurricane fault zone adjacent to the towns of La Verkin and Hurricane and in the Washington fault zone adjacent to St. George and Washington. Back side of map...

By: UGS Staff The liquefaction-potential categories of Cache Valley are mapped based on local geology and subsurface soil and water conditions and depend on the probability of having an earthquake within a 100-year period that will be strong enough to...

By: J. L. Jarva The liquefaction-potential categories of Weber County are mapped based on local geology and subsurface soil and water conditions and depend on the probability of having an earthquake within a 100-year period that will be strong enough...

By: J. L. Jarva The liquefaction-potential categories of Salt Lake County are mapped based on local geology and subsurface soil and water conditions and depend on the probability of having an earthquake within a 100-year period that will be strong...

By: J. L. Jarva The liquefaction-potential categories of Davis County are mapped based on local geology and subsurface soil and water conditions and depend on the probability of having an earthquake within a 100-year period that will be strong enough...

By: G. E. Christenson, L. D. Batatian, and C. V. Nelson The purpose of these guidelines is to outline appropriate surface-fault-rupture-hazard investigation techniques and report content to ensure adequate studies to protect the public, aid in land-use regulation, and facilitate...

By: S. Hecker This report consolidates and synthesizes information on Quaternary faulting, folding, and volcanism in Utah and characterizes recent tectonic activity throughout the state. The primary purpose is to provide a comprehensive reference on fault-specific seismic sources and surface...

By: H. H. Doelling, F. D. Davis, and C. J. Brandt Kane County, with its 4105 square miles, lies along the south-central margin of Utah and is found in the western part of the Colorado Plateaus physiographic province. It is...

By: B. D. Black, B. J. Solomon, and K. M. Harty Geologic hazards are naturally occurring geologic processes that present a risk to life and property. Tooele County is subject to many geologic hazards that need to be identified and...

By: M. D. Hylland and M. Lowe The Farmington Siding landslide complex is in Davis County, Utah, about 25 kilometers north of Salt Lake City. The landslide complex covers approximately 19.5 square kilometers and is one of 13 late Pleistocene/Holocene...

By: H. E. Gill and W. R. LundPark City began as a mining community in the late 1860s and mining continued actively in the area for more than 100 years. In the 1970s skiing surpassed mining as the major industry...