Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Entire DC Network
Holocene Earthquakes And Late Pleistocene Slip-Rate Estimates On The Wassuk Range Fault Zone, Nevada, J. M. Bormann, Benjamin E. Surpless, M. W. Caffee, S. G. Wesnousky
Holocene Earthquakes And Late Pleistocene Slip-Rate Estimates On The Wassuk Range Fault Zone, Nevada, J. M. Bormann, Benjamin E. Surpless, M. W. Caffee, S. G. Wesnousky
Geosciences Faculty Research
The Wassuk Range fault zone is an 80‐km‐long, east‐dipping, high‐angle normal fault that flanks the eastern margin of the Wassuk Range in central Nevada. Observations from two alluvial fan systems truncated by the fault yield information on the vertical slip rate and Holocene earthquake history along the range front. At the apex of the Rose Creek alluvial fan, radiocarbon dating of offset stratigraphy exposed in two fault trenches shows that multiple earthquakes resulted in 7.0 m of vertical offset along the fault since ∼9400 cal B.P. These data yield a Holocene vertical slip rate of 0.7±0.1 mm/yr. The south trench …
Cenozoic Tectonic Evolution Of The Central Wassuk Range, Western Nevada, Usa, Benjamin E. Surpless
Cenozoic Tectonic Evolution Of The Central Wassuk Range, Western Nevada, Usa, Benjamin E. Surpless
Geosciences Faculty Research
The central Wassuk Range of western Nevada is ideally located to investigate the interplay of Basin and Range extension and Walker Lane dextral deformation on the margin of the Basin and Range province. To elucidate the Cenozoic evolution of the range, the author conducted geologic mapping, structural data collection and analysis, geochemical analysis of igneous lithologies, and geochronology. This research delineates a three-stage deformational history for the range. A ~15 Ma pulse of ENE-WSW directed extension at high strain rates (~8.7 Ma) was immediately preceded by the eruption of andesites and was accommodated by high-angle, closely spaced (1-2 km), east-dipping …