Download or read book Late Pleistocene Slip Rates Along the Panamint Valley Fault Zone Eastern California written by William R. Hoffman and published by . This book was released on 2009 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Panamint Valley fault zone (PVFZ) is one of the primary structures accommodating right lateral shear across the Eastern California Shear Zone. Current slip-rate estimates are either long-term estimates based on total offset of the system and bounds on the initiation of fault slip, or estimates that rely on undated alluvial deposits. Using field surveys and high-resolution airborne LiDAR digital topography, I utilize displaced alluvial deposits at two localities, Happy Canyon and Manly Peak Canyon, to provide new slip-rate estimates along the PVFZ. Chronologic control is provided by a newly developed chronosequence of soils in Panamint Valley, radiocarbon dating of lacustrine tufa associated with shoreline deposits, and terrestrial cosmogenic nuclide (10Be) dating of alluvial fan surfaces. At Manly Peak Canyon, debris flow levees offset 26.5 " 3.8 m with a maximum surface age of 12.5 " 1.4 ka yield a minimum extension rate of 2.1 " 0.5 mm/yr. At Happy Canyon, displaced alluvial markers demonstrate that slip along northeast-striking fault strands in the right-stepping portion of the fault zone is purely dip-slip with no lateral component. Here, an alluvial fan complex cut by a series of normal faults with total extension of 56.0 " 10.3 m has surface age estimates from a calibrated soil chronofunction ranging from ~16 - 40 ka, yielding a minimum extension rate of 2.7 " 1.5 mm/yr. Additionally, a 20.7 " 5.2 ka surface at Happy Canyon is cut by a fault scarp with 68.1 " 2.0 m of vertical offset, which yields a preliminary Late Pleistocene minimum throw rate of 3.3 " 0.7 mm/yr. Results from this thesis provide the only two slip-rate estimates along the PVFZ with chronologic control, and reveal along-strike variations in horizontal displacement direction that appear coordinated with increased subsidence in the northern part of the valley.
Download or read book The Owens Valley Fault Zone Eastern California and Surface Faulting Associated with the 1872 Earthquake written by Sarah Beanland and published by . This book was released on 1994 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estimates of slip and magnitude of the 1872 Owens Valley earthquake and estimates of late Quaternary slip, slip rate, and earthquake recurrence associated with the 100-km-long fault zone as determined at 40 sites.
Download or read book Late Pleistocene Slip Rate for the Western Pinto Mountain Fault Morongo Valley Southern California written by Katherine Gabriel and published by . This book was released on 2017 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: The San Gorgonio Pass (SGP) region of the San Andreas fault (SAF) system in southern California is complicated by overlapping, active strands and its intersection with prominent, secondary structures such as the Pinto Mountain fault (PMF). Recent work in this area proposes that strain may be transferred from the Mission Creek strand of the SAF to the Eastern California Shear Zone (ECSZ), at least partly via the PMF. Like the better known Garlock fault, the PMF is a major east-west trending left-lateral transverse fault that intersects the Mission Creek strand of the SAF in the eastern SGP area. Geodetic and geologic slip rates reported for the PMF vary from 1 to 12.5 mm/yr and are poorly constrained because of a lack of geologic data. This report describes a geologic slip rate from faulted alluvium in Big Morongo Canyon in Morongo Valley, California. A best-constrained strath contact between late Pleistocene alluvium (Qoa) and underlying bedrock (ggm) is offset in a left-lateral sense a total of 228 – 303 m. I obtained cosmogenic 10Be exposure ages of six monzo-granite boulders on the surface of Qoa. Assuming zero-erosion rate, boulder ages range from ~63 ka to ~88 ka. I believe that surface deflation and erosion has occurred, and therefore choose a weighted average of 86.9 +/- 4.5 ka as the preferred age for the surface of Qoa. I calculate a preferred slip rate of 3.0 +0.6/-0.4 mm/yr for western PMF system for the last ~87 ka. A fault scarp on one of the secondary splays in latest Pleistocene to Holocene alluvium (Qa) indicates that the western PMF has been active during the last
Download or read book High Geologic Slip Rates Since Early Pleistocene Initiation of the San Jacinto and San Felipe Fault Zones in the San Andreas Fault System Southern California USA written by and published by Geological Society of America. This book was released on 2010-01-01 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The San Jacinto right-lateral strike-slip fault zone is crucial for understanding plate-boundary dynamics, regional slip partitioning, and seismic hazards within the San Andreas fault system of southern California, yet its age of initiation and long-term average slip rate are controversial. This synthesis of prior and new detailed studies in the western Salton Trough documents initiation of structural segments of the San Jacinto fault zone at or slightly before the 1.07 Ma base of the Jaramillo subchron. In Special Paper 475, five new estimates of displacement are developed using offset successions of crystalline rocks; distinctive marker beds in the late Cenozoic basin fill; analysis of strike-slip-related fault-bend folds; quantification of strain in folds at the tips of dextral faults; and gravity, magnetic, and geomorphic data sets."--Publisher's website.
Download or read book Determination of Late Pleistocene Holocene Slip Rates Along the San Gregorio Fault Zone San Mateo County California written by Gerald Eric Weber and published by . This book was released on 1993 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Treatise on Geomorphology written by and published by Academic Press. This book was released on 2013-02-27 with total page 6392 pages. Available in PDF, EPUB and Kindle. Book excerpt: The changing focus and approach of geomorphic research suggests that the time is opportune for a summary of the state of discipline. The number of peer-reviewed papers published in geomorphic journals has grown steadily for more than two decades and, more importantly, the diversity of authors with respect to geographic location and disciplinary background (geography, geology, ecology, civil engineering, computer science, geographic information science, and others) has expanded dramatically. As more good minds are drawn to geomorphology, and the breadth of the peer-reviewed literature grows, an effective summary of contemporary geomorphic knowledge becomes increasingly difficult. The fourteen volumes of this Treatise on Geomorphology will provide an important reference for users from undergraduate students looking for term paper topics, to graduate students starting a literature review for their thesis work, and professionals seeking a concise summary of a particular topic. Information on the historical development of diverse topics within geomorphology provides context for ongoing research; discussion of research strategies, equipment, and field methods, laboratory experiments, and numerical simulations reflect the multiple approaches to understanding Earth’s surfaces; and summaries of outstanding research questions highlight future challenges and suggest productive new avenues for research. Our future ability to adapt to geomorphic changes in the critical zone very much hinges upon how well landform scientists comprehend the dynamics of Earth’s diverse surfaces. This Treatise on Geomorphology provides a useful synthesis of the state of the discipline, as well as highlighting productive research directions, that Educators and students/researchers will find useful. Geomorphology has advanced greatly in the last 10 years to become a very interdisciplinary field. Undergraduate students looking for term paper topics, to graduate students starting a literature review for their thesis work, and professionals seeking a concise summary of a particular topic will find the answers they need in this broad reference work which has been designed and written to accommodate their diverse backgrounds and levels of understanding Editor-in-Chief, Prof. J. F. Shroder of the University of Nebraska at Omaha, is past president of the QG&G section of the Geological Society of America and present Trustee of the GSA Foundation, while being well respected in the geomorphology research community and having won numerous awards in the field. A host of noted international geomorphologists have contributed state-of-the-art chapters to the work. Readers can be guaranteed that every chapter in this extensive work has been critically reviewed for consistency and accuracy by the World expert Volume Editors and by the Editor-in-Chief himself No other reference work exists in the area of Geomorphology that offers the breadth and depth of information contained in this 14-volume masterpiece. From the foundations and history of geomorphology through to geomorphological innovations and computer modelling, and the past and future states of landform science, no "stone" has been left unturned!
Download or read book U S Geological Survey Bulletin written by and published by . This book was released on 1983 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pleistocene Slip Rate of the Owens Valley Fault California written by Matthew J. Rogers and published by . This book was released on 2006 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Field Guide to Plutons Volcanoes Faults Reefs Dinosaurs and Possible Glaciation in Selected Areas of Arizona California and Nevada written by Ernest M. Duebendorfer and published by Geological Society of America. This book was released on 2008-01-01 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers from the 2008 combined Cordilleran and Rocky Mountain Sections meeting of the Geological Society of America provide background information and road logs for 11 field trips in Nevada, Arizona, and California. Field trips span the geological record from the Ediacaaran (late Neoproterrozoic) to the Holocene. The field trips highlight features of tectonics, paleontology, volcanism, and glaciation. B&w and color photos and maps are included. There is no subject index. Duebendorfer is affiliated with Northern Arizona University. Smith is affiliated with the University of Nevada-Las Vegas.
Download or read book Late Quaternary Recurrence Intervals on the Owens Valley Fault Zone Lone Pine California written by Alan R. Gillespie and published by . This book was released on 1990 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Geological Survey Professional Paper written by Michael N. Machette and published by . This book was released on 1984 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pliocene Kinematic Reorganization Fault Geometry Basin Evolution and Displacement Budget Along the Furnace Creek Fish Lake Valley Fault Zone Eastern California and Western Nevada written by Nicholas James Mueller and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The active northwest-striking Furnace Creek - Fish Lake Valley fault system of eastern California and western Nevada records a protracted history of displacement that has accumulated 45-50 km of right-lateral offset since inception of motion in the middle Miocene. Geologic mapping and 40Ar/39Ar geochronologic data document that ~22 km of right-lateral offset occurred from ~11.6 - 4 Ma, at a long-term average rate of 2.9 mm/yr. A kinematic transition from wrench-dominated deformation to right-oblique transtensional deformation is recorded along the Furnace Creek - Fish Lake Valley fault zone beginning in the middle Pliocene, and has resulted in the remaining right-lateral displacement at a long-term average slip rate of 5.75 - 7 mm/yr. Both the total magnitude of right-lateral displacement and late Pleistocene slip rates are demonstrated to decrease from south to north along the Fish Lake Valley part of the fault zone and are related to displacement transfer onto kinematically linked fault systems. New geologic mapping, structural and stratigraphic analysis, and modeling of gravity data are used to determine the subsurface architecture of Fish Lake Valley and place constraints on the displacement budget for the region. Three-dimensional depth inversion of gravity data indicates that Fish Lake Valley is internally dissected by a system of faults that segments the subsurface into multiple sub-basins with depths of ~1.8 to 3.0 km, filled with lower Miocene to Quaternary volcanic and sedimentary deposits. A grid of 2-dimensional forward gravity models, based on geologic mapping and subsurface data in northern Fish Lake Valley, reveals the internal distribution of basin filling deposits and allows for the estimation of Pliocene and younger displacement on basin bounding faults. Offsets markers mapped in the highlands and inferred in the subsurface indicate that 4 to 5.5 kilometers of vertical offset has accumulated on faults bounding and within southern and central Fish Lake Valley, and around 3.6 km of vertical offset has accrued along the Emigrant Peak fault zone and structures bounding northeastern Fish Lake Valley since the middle Pliocene. Around 2 to 3 km of right-lateral displacement has been transferred from the Fish Lake Valley fault zone to structures bounding northeastern Fish Lake Valley in the last 4 Ma. These results, combined with prior work in the area, indicate that of the 23-28 km of right-lateral displacement accumulated on the Fish Lake Valley fault zone since the mid-Pliocene, only ~10 km of displacement is transferred away to kinematically linked structures to the east of the Fish Lake Valley fault zone. The remaining displacement is likely transferred to the north and west via a horse-tail array of structures underlying northwestern Fish Lake Valley.
Download or read book U S Geological Survey Bulletin written by Gilpin R. Robinson (Jr.) and published by . This book was released on 1992 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: A multidisciplinary study of the geomorphic effects of a severe storm in a mountainous area of the Appalachians.
Download or read book Late Holocene Slip Rate and Amounts of Coseismic Rupture Along the Central Calavaras Fault San Francisco Bay Area California written by Keith Irvin Kelson and published by . This book was released on 1998 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Late Cenozoic Drainage History of the Southwestern Great Basin and Lower Colorado River Region written by Marith C. Reheis and published by Geological Society of America. This book was released on 2008-01-01 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers in this title were selected from presentations from an April 2005 workshop sponsored by the U.S. Geological Survey Earth Surface Dynamics Program, the U.S. Geological Survey National Cooperative Geologic Mapping Program, and the Smithsonian Institution. Papers are divided into two broad topics of the configuration, areal extent, and temporal development of the chain of interconnected lakes that emptied into Death Valley during periods of the Pleistocene, and the late Cenozoic history of drainage integration in the lower Colorado River region. Papers are occasionally illustrated in both color and black-and-white; the publication contains no index.
Download or read book High Geologic Slip Rates Since Early Pleistocene Initiation of the San Jacinto and San Felipe Fault Zones in the San Andreas Fault System Southern California USA written by Susanne U. Janecke and published by . This book was released on 2018 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Probabilistic Seismic Hazard Assessment for the State of California written by and published by . This book was released on 1996 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
