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: 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 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: 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...

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: 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...

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: 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: 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: 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...

By: C. G. Oviatt, J. F. Shroder, and R. E. Sewell The Colorado Plateau is a unique area for the study of Quaternary deposits and processes since it has been the site of continuous stream downcutting, cliff retreat, and landscape...

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 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: 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...

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: UGS Staff This map shows the location of faults in Davis County. Back side of map includes information on faults, effects of surface fault rupture, when and where surface rupture is likely to occur, and what can be done...

By: B. N. Kaliser Twenty-four counties in Utah were surveyed in 1983-84 to compile this summary of known geological events related to the 1983 wet year. It is hoped that this summary and the one by Davis will provide a...

By: B. N. Kaliser and J. E. Slossen Geologic consequences of the abnormally wet year of 1983 were unprecedented in number, magnitude, and geographic distribution in the l36-year history of Utah. That year was preceded by an extraordinarily wet 1982...