map for southern Salt Lake County. Such areas along the Bay margins are found in San Francisco, Oakland and Alameda Island, as well as other places around San Francisco Bay.
10 a.m. to 5 p.m. Utah Mining Districts and Industrial Mineral Resources, Natural Resources Map & Bookstore (Outside Link), Groundwater and Hydrogeology Publications, Sensitivity & Vulnerability to Pesticides Maps, Services for Local Governments and Other Agencies, A Guide for Homebuyers and Real Estate Agents, School Site Evaluation and Report Review Services, Great Salt Lake, Lake Bonneville, & Bear Lake, GeoSights: G.K. Gilbert Geologic View Park, LEARN MORE ABOUT THE UTAH GEOLOGICAL SURVEY, © Copyright - Utah Geological Survey - State of Utah, Liquefaction in the April 15, 2010, M 4.5 Randolph Earthquake. trailer << /Size 35 /Prev 349631 /Info 7 0 R /Root 9 0 R /ID[] >> startxref 0 %%EOF 9 0 obj << /Type /Catalog /Pages 10 0 R >> endobj 10 0 obj << /Type /Pages /Kids [ 11 0 R 1 0 R ] /Count 2 >> endobj 33 0 obj << /Length 34 0 R /S 50 /Filter /FlateDecode >> stream
0000271102 00000 n (1986) delineated liquefaction potential zones using liquefaction-triggering calculations based on Standard Penetration Test (SPT) results from a relatively limited geotechnical database. Liquefaction may occur when water-saturated sandy soils are subjected to earthquake ground shaking. x�E�1AQ���q���n%jQH$�a+��"4 0000274854 00000 n AREA, Waves caused by seismic activity that cause damage include seiches and tsunamis. The liquefaction potential categories shown on this map depend on the probability of having an earthquake within a 100-year period that will be strong enough to cause liquefaction … What can be done? LIQUEFACTION POTENTIAL MAP for UTAH COUNTY, UTAH by Loren R. Anderson, Jeffrey R. Keaton and Jon E. Bischoff Sponsored by: U.S. Geological Survey Contract: 14-08-0001-21359 Department of Civil and Environmental Engineering Utah State University Logan, Utah and Dames & Moore Consulting Engineers Salt Lake City, Utah May 1986 LIQ27,
Liquefaction potential map for Salt Lake County, Utah : complete technical report.
Preliminary and generalized map showing the probability of liquefaction triggered by a magnitude 7 Wasatch fault earthquake in the Salt Lake Valley area. 0000000913 00000 n Northern, central, and southwestern Utah are the state’s most seismically active areas. Utah Government Publications Online, a service of the Utah State Library, http://geology.utah.gov/online/pdf/pi-25.pdf, http://ugspub.nr.utah.gov/publications/public_information/PI-25.pdf, http://digitallibrary.utah.gov/awweb/guest.jsp?smd=1&cl=all_lib&lb_document_id=12348, Liquefaction-potential map for a part of Salt Lake County, Utah, Utah Geological Survey; Natural Resources. How is liquefaction potential determined? 0000046950 00000 n The highest hazard areas shown by the liquefaction hazard maps are concentrated in regions of man-made landfill, especially fill that was placed many decades ago in areas that were once submerged bay floor.
All informational materials in this government publication are in the public domain, and as such, are not restricted by copyright law unless otherwise stated. Moderate means that the probability is between 10% and 50%, low between 5 and 10%, and very low less than 5%. Description Contract Report 94-9: As part of the U.S. Geological Survey's Earthquake Hazard Reduction program a "Liquefaction Potential Map" has been prepared for Salt Lake County, Utah. startxref Glad You Asked: How Do Geologists Know How Old a Rock Is? Liquefaction-potential map for Utah County. 0000001139 00000 n Liquefaction may occur when water-saturated sandy soils are subjected to earthquake ground shaking. x��W�r�6�������. The Utah State Library Division considers state publications made available by state agencies and political subdivisions as required by Utah Code Ann. Several specialized programs comprise the UGS: Energy & Minerals, Geologic Hazards, Geologic Information & Outreach, Geologic Mapping, Groundwater & Wetlands, and Paleontology. Liquefaction Hazard Maps. Liquefaction Potential Map of Salt Lake County; Public Information Series #25. in, PERIMETER, The Utah Geological Survey (UGS) is a division of the Utah Department of Natural Resources. 0000273734 00000 n Where is liquefaction likely to occur? The Public Information Series consists of brief topical reports or brochures designed to make nontechnical geologic information available to the general public. 0000001455 00000 n Documents in this series may have either UGS or non-UGS authors. Glad You Asked: Igneous, Sedimentary, & Metamorphic Rocks. The most susceptible soils are generally along rivers, streams, and lake shorelines, as well as in some ancient river and lake deposits. Utah Department of Transportation . 0000266969 00000 n Two conditions must exist for liquefaction to occur: (1) the soil must be susceptible to liquefaction (loose, water-saturated, sandy soil, typically between 0 and 30 feet below the ground surface) and (2) ground shaking must be strong enough to cause susceptible soils to liquefy. 0000269578 00000 n LIQUEFACTION-POTENTIAL MAP FOR A PART OF UTAH COUNTY, UTAH UTAH GEOLOGICAL SURVEY Public Information Series 28 August 1994 LIQUEFACTION POTENTIAL Moderate -V x p $> Digital compilation by Janine L. Jarva, Utah Geological Survey, facilitated by Automated Geographic Reterence Center SCALE 1:365,000 V 15 KILOMfcTEHS This map is for ganeral reference only and was modified … Show Map. Services. �/�7`�c�r@��.Kd��!�6� 3I-?���m2�!,N>W�������z֬��s���[�lc^�&oEg��*�.��4y�8���LL�S�z��ʕȐ6���G��fv̐.h���z)4U���Q� �Q)3:��x"b>����I,��D�8u��$q(�J� ��Y�]*$@a�)��*�y%@0���Բ��I"PM�� 9�0 ,4�3�T!L
Liquefaction occurs when the pressure in the pore water equals the weight of the sediment column above the sandy layer. endstream endobj 34 0 obj 106 endobj 11 0 obj << /Type /Page /Parent 10 0 R /MediaBox [ 0 0 521.760 766.080 ] /Resources 12 0 R /Contents 13 0 R /Tabs /S >> endobj 12 0 obj << /ProcSet [ /PDF /Text /ImageC ] /Font << /F5 17 0 R /F6 19 0 R /F7 21 0 R /F8 23 0 R /F9 25 0 R /F13 27 0 R /F14 29 0 R /F15 31 0 R >> /XObject << /im1 15 0 R >> >> endobj 13 0 obj << /Length 14 0 R /Filter /FlateDecode >> stream 0000001223 00000 n
0000268452 00000 n The cost of site investigations and/or mitigation measures should be balanced with an acceptable risk. 0000001040 00000 n Scale card is about 6.5 inches long. Soil liquefaction; Earthquake hazard analysis; Hazardous geographic environments; Earthquakes; Soils, Utah, United States, http://sws.geonames.org/5549030/, 39.25024, -111.75103; Salt Lake County, Utah, United States, http://sws.geonames.org/5781004/, 40.66758, -111.92403. %PDF-1.2 %���� Prepared For: United States Geological Survey .
The valleys of the Wasatch Front are especially vulnerable to liquefaction because of susceptible soils, shallow ground water, and relatively high probability of moderate to large earthquakes. Contract Report 94-9: As part of the U.S. Geological Survey's Earthquake Hazard Reduction program a "Liquefaction Potential Map" has been prepared for Salt Lake County, Utah. %PDF-1.3 %���� History. 0000265854 00000 n Probabilistic Liquefaction Triggering and Lateral Spread Hazard Maps for Davis, Weber, and Salt Lake Counties, Utah: Collaborative Research with University of Utah and Brigham Young University .
High liquefaction potential means that there is a 50% probability of having an earthquake within a 100-year period that will be strong enough to cause liquefaction.
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