The engineering properties of alluvial/colluvial fault scarp soils in the western Basin and Range, and their influence on fault scarp morphology/dating
AuthorProkop, Christopher Jon
Geological Sciences & Engineering
StatisticsView Usage Statistics
Both field and laboratory studies of the alluvial/colluvial soils, derived from various lithologies, that comprise the 1954 Dixie Valley – Fairview Peak fault scarps and the 1915 Pleasant Valley fault scarps of west- central Nevada show that the engineering properties of these soils play a significant role in the development of scarp morphology. Laboratory shear tests demonstrate that the cohesive strengths (C) of these scarp soils increase in an approximately linear manner with increasing ratio of free face to total scarp height (R) . Comparable linear relationships exist between the bulk densities (Y,) and the b Rg ratios for the two study areas. In both cases, the v correlation coefficients between the soil engineering parameters and the Rg ratios are high. The peak friction angles ( (J)^) and the Rg ratios for the Dixie Valley-Fairview Peak study area also exhibit a linear trend and a high correlation coefficient, but, those of Pleasant Valley do not. This is probably due to the smaller sampling base of the latter. Such results help explain the often abrupt changes in the free face/total scarp height ratios observed along fault scarps at the boundaries between differing soil types.
Online access for this thesis was created in part with support from the Institute of Museum and Library Services (IMLS) administered by the Nevada State Library, Archives and Public Records through the Library Services and Technology Act (LSTA). To obtain a high quality image or document please contact the DeLaMare Library at https://unr.libanswers.com/ or call: 775-784-6945.
Subjectfault scarp morphology
fault scarp dating
Dixie Valley-Fairview Peak
Showing items related by title, author, creator and subject.
Pease, Robert Charles (University of Nevada, Reno, 1979)Examination of faults south of Carson City indicates that scarps erode more rapidly in non-indurated alluvium and that Pleistocene soils, developed on older scarps, prevent scarp degradation and result in faults with steeper ...
Late Quaternary deformation and seismic risk in the northern Sierra Nevada-Great Basin boundary zone near the Sweetwater Mountains, California and Nevada Hayes, Garry Fallis (University of Nevada, Reno, 1985)Remote-sensing, seismic and field studies indicate three major zones of Quaternary deformation near the Sweetwater Mountains. Holocene fault scarps are present in the Antelope, Little Antelope, Smith and Bridgeport Valleys, ...
Carver, Gary Alen (University of Nevada, Reno, 1969)Shorelines, surface fault scarps, and fissures in the Owens Lake Basin have been examined in detail to determine the Quaternary tectonic history.