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| Author | : Stephen F. Personius |
| Publisher | : Utah Geological Survey |
| Total Pages | : 60 |
| Release | : 1991 |
| Genre | : Science |
| ISBN | : |
| Author | : Bill D. Black |
| Publisher | : Utah Geological Survey |
| Total Pages | : 28 |
| Release | : 1996 |
| Genre | : Faults (Geology) |
| ISBN | : 1557913994 |
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
| Author | : William R. Lund |
| Publisher | : Utah Geological Survey |
| Total Pages | : 87 |
| Release | : 2007 |
| Genre | : Science |
| ISBN | : 1557917604 |
This 81 page report presents the results of a study of the Hurricane fault in Utah.
| Author | : William R. Lund |
| Publisher | : Utah Geological Survey |
| Total Pages | : 28 |
| Release | : 1998 |
| Genre | : Earthquake hazard analysis |
| ISBN | : 1557916136 |
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
| Author | : James McCalpin |
| Publisher | : Utah Geological Survey |
| Total Pages | : 53 |
| Release | : 2002 |
| Genre | : Nature |
| ISBN | : 1557916713 |
This Utah Geological Survey Miscellaneous Publication, Post-Provo Paleoearthquake Chronology of the Brigham City Segment, Wasatch Fault Zone, Utah, is the eleventh 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 on 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 the most extensive single paleoseismic-trenching project yet conducted on the Wasatch fault zone. The purpose of the study was to lengthen the paleoseismic chronology for the Brigham City segment of the Wasatch fault zone beyond the 6,000-year record previously available, and to resolve questions regarding the irregular pattern of paleoearthquakes reported by earlier workers for the Brigham City segment. This study makes extensive use of radiocarbon, thermoluminescence, and infrared stimulated luminescence dating techniques to develop a real-time chronology of past surface-faulting earthquakes.
| Author | : Michael D. Hylland |
| Publisher | : Utah Geological Survey |
| Total Pages | : 23 |
| Release | : 2007 |
| Genre | : Science |
| ISBN | : 1557917639 |
Report summarizes a Utah Geological Survey project to characterize the relative level of activity of the Collinston and Clarkston mountain segments of the Wasatch Fault Zone.
| Author | : William R. Lund |
| Publisher | : Utah Geological Survey |
| Total Pages | : 70 |
| Release | : 1996 |
| Genre | : Faults (Geology) |
| ISBN | : 1557913706 |
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
| Author | : Bill D. Black |
| Publisher | : Utah Geological Survey |
| Total Pages | : 29 |
| Release | : 2000 |
| Genre | : Fault zones |
| ISBN | : 1557916462 |
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
| Author | : Geological Survey (U.S.). |
| Publisher | : |
| Total Pages | : 962 |
| Release | : 1991 |
| Genre | : Geology |
| ISBN | : |
| Author | : William R. Lund |
| Publisher | : Utah Geological Survey |
| Total Pages | : 114 |
| Release | : 2005-06-30 |
| Genre | : Science |
| ISBN | : 1557917272 |
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.
