Seismicity of the Intermountain Seismic Belt

Faulting in the Yucca Mountain region: Critical review and analyses of tectonic data from the central Basin and Range

“…The distribution of earthquake hypocenters in southern Nevada and southern California es a pronounced increase over the last 50 yr (Figure 3-1) and clustering of earthquakes along the San Andreas fault system, western Mojave Desert, southern Sierra Nevada Range, Owens Valley, Long Valley Caldera, Walker Lane Seismic Belt, Central Nevada Seismic Belt, and the Intermountain Seismic Belt (Figures 3-1, 3-3, and 3-4; Rogers et al, 1991;Smith and Arabasz, 1991;Oldow, 1992). Most of these seismically active areas show abundant recent activity as indicated by the red spheres, which represent earthquakes that occurred from the 1960's through February 1994 (Figure 3-1 (Slemmons, 1957;Doser, 1986;Zhang et al, 1991;Rogers et al, 1991).…”

Field guide to geologic excursions in southwestern Utah and adjacent areas of Arizona and Nevada

“…Quaternary deposits along the fault consist of steep colluvial deposits mantling the lower Hurricane Cliffs, steep alluvial fans emanating from smaller drainages along the cliffs, and fans, terraces and channels associated with the few larger drainages that breach the cliffs. The Colorado Plateau/Basin and Range Transition Zone is coincident with part of the Intermountain seismic belt (Smith and Sbar, 1974;Smith and Arabasz, 1991;figure 3), although this belt of earthquake epicenters becomes broader and more poorly defined from north to south. Surface rupture has not occurred along the Hurricane fault historically, but the area does have a pronounced record of seismicity.…”

Idaho National Engineering Laboratory (INEL) Environmental Restoration (ER) Program Baseline Safety Analysis File (BSAF)

“…The eastern Snake River Plain has been characterized as a pronounced aseismic region relative to the surrounding Intermountain Seismic Belt (Smith and Arabasz 1991). Earthquake epicenters are plotted in Figure 1- …”