History of Late Holocene Earthquakes at the Willow Creek Site and on the Nephi Segment, Wasatch Fault Zone, Utah
Title | History of Late Holocene Earthquakes at the Willow Creek Site and on the Nephi Segment, Wasatch Fault Zone, Utah PDF eBook |
Author | Anthony J. Crone |
Publisher | Utah Geological Survey |
Pages | 65 |
Release | 2014-09-15 |
Genre | CD-ROMs |
ISBN | 1557918945 |
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.
Holocene Surface-faulting Earthquakes at the Spring Lake and North Creek Sites of the Wasatch Fault Zone
Title | Holocene Surface-faulting Earthquakes at the Spring Lake and North Creek Sites of the Wasatch Fault Zone PDF eBook |
Author | Christopher B. DuRoss |
Publisher | |
Pages | 119 |
Release | 2017 |
Genre | Paleoseismology |
ISBN | 9781557919366 |
The Wasatch Fault
Title | The Wasatch Fault PDF eBook |
Author | Sandra N. Eldredge |
Publisher | Utah Geological Survey |
Pages | 20 |
Release | 1996-01-22 |
Genre | Science |
ISBN | 1557913870 |
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.
Paleoseismic Investigation of the Northern Strand of the Nephi Segment of the Wasatch Fault Zone at Santaquin, Utah
Title | Paleoseismic Investigation of the Northern Strand of the Nephi Segment of the Wasatch Fault Zone at Santaquin, Utah PDF eBook |
Author | Christopher B. DuRoss |
Publisher | Utah Geological Survey |
Pages | 39 |
Release | 2008 |
Genre | CD-ROMs |
ISBN | 1557917892 |
This CD contains a 33 page report, appendix, and plate. This study presents the results of fault-trench excavations near Santaquin, Utah, and includes discussion of (1) previous paleoseismic investigations on the Nephi segment, (2) the geology of the Santaquin trench site and excavations (3) paleoseismic results, including the timing of the most recent surface-faulting earthquake, fault displacement and slip rate, and surface-faulting earthquake recurrence and (4) implications for the segmentation of the southern Wasatch fault zone.
The Number and Timing of Holocene Paleoseismic Events on the Nephi and Levan Segments, Wasatch Fault Zone, Utah
Title | The Number and Timing of Holocene Paleoseismic Events on the Nephi and Levan Segments, Wasatch Fault Zone, Utah PDF eBook |
Author | Michael Jackson |
Publisher | |
Pages | 23 |
Release | 1991 |
Genre | Earthquakes |
ISBN |
Holocene Earthquake History of the Northern Weber Segment of the Wasatch Fault Zone, Utah
Title | Holocene Earthquake History of the Northern Weber Segment of the Wasatch Fault Zone, Utah PDF eBook |
Author | |
Publisher | |
Pages | |
Release | 2006 |
Genre | Earthquakes |
ISBN |
This CD (39 p. report, 2 plates) contains critical information regarding paleoearthquake parameters such as earthquake timing, recurrence, displacement, slip rate, and fault geometry.
Segmentation of the Wasatch Fault Zone, Utah--summaries, Analyses, and Interpretations of Geological and Geophysical Data
Title | Segmentation of the Wasatch Fault Zone, Utah--summaries, Analyses, and Interpretations of Geological and Geophysical Data PDF eBook |
Author | Russell L. Wheeler |
Publisher | |
Pages | 54 |
Release | 1988 |
Genre | Faults (Geology) |
ISBN |
Descriptions, with supporting evidence, of segment boundaries as they are expressed in gravity, aeromagnetic, seismological, fault-geometric, topographic, and structural data.