Paleoseismic Investigation and Long-term Slip History of the Hurricane Fault in Southwestern Utah - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Paleoseismic Investigation and Long-term Slip History of the Hurricane Fault in Southwestern Utah write by William R. Lund. This book was released on 2007. Paleoseismic Investigation and Long-term Slip History of the Hurricane Fault in Southwestern Utah available in PDF, EPUB and Kindle. This 81 page report presents the results of a study of the Hurricane fault in Utah.
Paleoseismic Reconnaissance of the Sevier Fault, Kane and Garfield Counties, Utah
Paleoseismic Reconnaissance of the Sevier Fault, Kane and Garfield Counties, Utah - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Paleoseismic Reconnaissance of the Sevier Fault, Kane and Garfield Counties, Utah write by William R. Lund. This book was released on 2008. Paleoseismic Reconnaissance of the Sevier Fault, Kane and Garfield Counties, Utah available in PDF, EPUB and Kindle. This 37 page report presents the results of a study of the Sevier fault in Utah.
History of Late Holocene Earthquakes at the Willow Creek Site and on the Nephi Segment, Wasatch Fault Zone, Utah
History of Late Holocene Earthquakes at the Willow Creek Site and on the Nephi Segment, Wasatch Fault Zone, Utah - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook History of Late Holocene Earthquakes at the Willow Creek Site and on the Nephi Segment, Wasatch Fault Zone, Utah write by Anthony J. Crone. This book was released on 2014-09-15. History of Late Holocene Earthquakes at the Willow Creek Site and on the Nephi Segment, Wasatch Fault Zone, Utah available in PDF, EPUB and Kindle. 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.
Consensus Preferred Recurrence-interval and Vertical Slip-rate Estimates
Consensus Preferred Recurrence-interval and Vertical Slip-rate Estimates - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Consensus Preferred Recurrence-interval and Vertical Slip-rate Estimates write by William R. Lund. This book was released on 2005-06-30. Consensus Preferred Recurrence-interval and Vertical Slip-rate Estimates available in PDF, EPUB and Kindle. 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.
Regional groundwater flow and water quality in the Virgin River Basin and surrounding areas, Utah and Arizona
Regional groundwater flow and water quality in the Virgin River Basin and surrounding areas, Utah and Arizona - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Regional groundwater flow and water quality in the Virgin River Basin and surrounding areas, Utah and Arizona write by Paul Inkenbrandt. This book was released on 2013-12-17. Regional groundwater flow and water quality in the Virgin River Basin and surrounding areas, Utah and Arizona available in PDF, EPUB and Kindle. In this 46-page report, we characterized the deep aquifer system and its connections to the overlying aquifers in the area of the Hurricane fault in Washington County by examining well logs, creating regional potentiometric-surface maps, compiling groundwater quality data, conducting gravity surveys, examining remote sensing data for surface lineaments, and determining areas for potential monitoring wells. Results of the study were: (1) R and C aquifer groundwater depths are > 500 feet in the I-15 corridor area, (2) a groundwater divide likely exists south of the Utah-Arizona state line, (3) groundwater flow follows open fracture systems, (4) fracture conductivity is highest near the fault, (5) dissolution of evaporites increase groundwater TDS, and (6) a well should be drilled into the Hurricane fault near Pintura.
