Download or read book Fault behavior and earthquake recurrence on the Provo segment of the Wasatch fault zone at Mapleton Utah County Utah written by William R. Lund and published by . This book was released on 1991 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fault Behavior and Earthquake Recurrence on the Provo Segment of the Wasatch Fault Zone at Mapleton Utah County Utah written by William R. Lund and published by . This book was released on 1991-06-01 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Paleoseismic Investigation at Rock Canyon Provo Segment Wasatch Fault Zone Utah County Utah written by William R. Lund and published by Utah Geological Survey. This book was released on 1998 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Field work for this paleoseismic investigation at Rock Canyon was performed in 1988. It was one of three studies conducted in the late 1980s and early 1990s to determine if the Provo segment of the Wasatch fault zone should be subdivided into three smaller segments as tentatively proposed by Machette and others on the basis of their geologic mapping. This investigation was the last of the three studies performed. Those results, combined with the results of paleoseismic investigations at American Fork Canyon and Mapleton, showed that the Wasatch fault where it passes through Utah Valley probably consists of a single, almost 70-kilometer-Iong fault segment (Machette and others, 1992). Publication of the details of the Rock Canyon study has been delayed for several years, chiefly due to the press of new job duties on the part of the investigators. The information remains important and is presented here for the use of those individuals interested in earthquake hazards and seismic-source characteristics of the Wasatch fault in Utah Valley. 21 pages + 2 plates
Download or read book Assessment of Regional Earthquake Hazards and Risk Along the Wasatch Front Utah written by Paula Gori and published by . This book was released on 1992 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chapters A-J are issued as a single volume and are not available separately.
Download or read book Assessment of Regional Earthquake Hazards and Risk Along the Wasatch Front Utah written by and published by . This book was released on 1984 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chapters A-J are issued as a single volume and are not available separately.
Download or read book The Oquirrh Fault Zone Tooele County Utah written by William R. Lund and published by Utah Geological Survey. This book was released on 1996 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two reports in this Special Study provide critical geologic and paleoseismic information on the Oquirrh fault zone, a Quaternary fault in eastern Tooele County, west-central Utah. The Oquirrh fault zone has long been recognized as a potential source of large earthquakes which could affect military and hazardous waste facilities, nearby towns, and populous areas of the more distant central Wasatch Front. 64 pages + 2 plates
Download or read book The Wasatch Fault written by Sandra N. Eldredge and published by Utah Geological Survey. This book was released on 1996-01-22 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 all ages.
Download or read book Consensus Preferred Recurrence interval and Vertical Slip rate Estimates written by William R. Lund and published by Utah Geological Survey. This book was released on 2005-06-30 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of the Utah Quaternary Fault Parameters Working Group (hereafter referred to as the Working Group) review and evaluation of Utah’s Quaternary fault paleoseismic-trenching data. The purpose of the review was to (1) critically evaluate the accuracy and completeness of the paleoseismictrenching data, particularly regarding earthquake timing and displacement, (2) where the data permit, assign consensus, preferred recurrence-interval (RI) and vertical slip-rate (VSR) estimates with appropriate confidence limits to the faults/fault sections under review, and (3) identify critical gaps in the paleoseismic data and recommend where and what kinds of additional paleoseismic studies should be performed to ensure that Utah’s earthquake hazard is adequately documented and understood. It is important to note that, with the exception of the Great Salt Lake fault zone, the Working Group’s review was limited to faults/fault sections having paleoseismic-trenching data. Most Quaternary faults/fault sections in Utah have not been trenched, but many have RI and VSR estimates based on tectonic geomorphology or other non-trench-derived studies. Black and others compiled the RI and VSR data for Utah’s Quaternary faults, both those with and without trenches.
Download or read book Paleoseismic Investigation on the Salt Lake City Segment of the Wasatch Fault Zone at the South Fork Dry Creek and Dry Gulch Sites Salt Lake County Utah written by Bill D. Black and published by Utah Geological Survey. This book was released on 1996 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The South Fork Dry Creek and Dry Gulch sites lie within a few hundred meters of each other in the southeastern part of the Salt Lake Valley, and together provide the only location on the heavily urbanized Salt Lake City segment of the Wasatch fault zone where it is possible to develop a complete surface-faulting chronology for the segment since middle Holocene time (the past 6,000 years). Investigations at the two sites took place intermittently between 1985 and 1995 as permission was obtained to trench more and more of the scarps within the broad fault zone. The new information reported here on the size, timing, and especially recurrence of surface-faulting earthquakes on the Salt Lake City segment shows that the earthquake hazard presented by this segment of the Wasatch fault is greater than previously thought. Such information is vital to public officials, planners, and others making decisions regarding earthquake-hazard mitigation. 22 pages + 1 plate
Download or read book U S Geological Survey Professional Paper written by and published by . This book was released on 1984 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Paleoseismic Investigation of the Clarkston Junction Hills and Wellsville Faults West Cache Fault Zone Cache County Utah written by Bill D. Black and published by Utah Geological Survey. This book was released on 2000 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: Field work for this paleoseismic investigation was performed in 1997 at three sites (Winter Canyon, Roundy Farm, and Deep Canyon) on the Clarkston, Junction Hills, and Wellsville faults. These faults, along with several lesser associated faults nearby, comprise the West Cache fault zone on the west side of Cache Valley. No previous paleoseismic studies had been conducted on these faults. The information reported here on the size, timing, and recurrence of surface-faulting earthquakes on the West Cache fault zone is critical to public officials, planners, and others making decisions regarding earthquake-hazard mitigation in Cache Valley and the northern Wasatch front. 23 pages + 1 plate
Download or read book National Earthquake Hazards Reduction Program Summaries of Technical Reports Volume XXXII written by Geological Survey (U.S.) and published by . This book was released on 1991 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book History of Late Holocene Earthquakes at the Willow Creek Site and on the Nephi Segment Wasatch Fault Zone Utah written by Anthony J. Crone and published by Utah Geological Survey. This book was released on 2014-09-15 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 43-page report presents new data from the Willow Creek site that provides well-defined and narrow bounds on the times of the three youngest earthquakes on the southern strand of the Nephi segment, Wasatch Fault zone, and refines the time of the youngest earthquake to about 200 years ago. This is the youngest surface rupture on the entire Wasatch fault zone, which occurred about a century or less before European settles arrived in Utah. Two trenches at the Willow Creek site exposed three scarp-derived colluvial wedges that are evidence of three paleoearthquakes. OxCal modeling of ages from Willow Creek indicate that paleoearthquake WC1 occurred at 0.2 ± 0.1 ka, WC2 occurred at 1.2 ± 0.1 ka, and WC3 occurred at 1.9 ± 0.6 ka. Stratigraphic constraints on the time of paleoearthquake WC4 are extremely poor, so OxCal modeling only yields a broadly constrained age of 4.7 ± 1.8 ka. Results from the Willow Creek site significantly refine the times of late Holocene earthquakes on the Southern strand of the Nephi segment, and this result, when combined with a reanalysis of the stratigraphic and chronologic information from previous investigations at North Creek and Red Canyon, yield a stronger basis of correlating individual earthquakes between all three sites.
Download or read book New Publications of the Geological Survey written by Geological Survey (U.S.) and published by . This book was released on 1991 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Earthquake Scenario and Probabilistic Ground Shaking Maps for the Salt Lake City Utah Metropolitan Area written by Ivan Gynmun Wong and published by Utah Geological Survey. This book was released on 2002 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Salt Lake City metropolitan area is one of the most seismically hazardous urban areas in the interior of the western U.S. because of its location within the Intermountain Seismic Belt and its position adjacent to the active Wasatch fault. The elapsed time since the last large earthquake on the Salt Lake City segment of the Wasatch fault is approaching the mean recurrence interval based on the short-term paleoseismic record. In order to help raise the awareness of the general public and to help reduce earthquake risk in this area, we have developed nine microzonation maps showing surficial ground-shaking hazard. The maps are GIS-based and incorporate the site response effects of the unconsolidated sediments that underlie most of the metropolitan area within Salt Lake Valley. These nine maps, at a scale of 1:75,000, make up three sets, each consisting of three maps that display color-contoured ground motions in terms of (1) peak horizontal acceleration, (2) horizontal spectral acceleration at a period of 0.2 sec (5 Hz) and, (3) horizontal spectral acceleration at a period of 1.0 sec (1 Hz). One set of maps consists of deterministic or “scenario” maps for a moment magnitude (M) 7.0 earthquake on the Salt Lake City segment of the Wasatch fault. The two other sets are probabilistic maps for the two return periods of building code relevance, 500 and 2,500 years.
Download or read book Neotectonic Deformation Along the East Cache Fault Zone Cache County Utah written by James McCalpin and published by . This book was released on 1994 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Paleoseismic Analysis of the Wasatch Fault Zone at the Brigham City Trench Site Brigham City Utah and Pole Patch Trench Site Pleasant View Utah written by Stephen F. Personius and published by Utah Geological Survey. This book was released on 1991 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
