Richard A. Bennett

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[1] We investigate the distribution of active deformation in the northern Basin and Range province using data from continuous GPS (CGPS) networks, supplemented by additional campaign data from the Death Valley, northern Basin and Range, and Sierra Nevada–Great Valley regions. To understand the contemporary strain rate field in the context of the greater(More)
[1] We assess the accuracy of horizontal velocity estimates from the Basin and Range Geodetic Network (BARGEN), a continuous GPS network that has been in operation since 1996. To make this quantitative assessment, we use a procedure that we term the ‘‘whole-error’’ method. In this method, the measure of the velocity errors is the root-mean-square (RMS)(More)
[1] The Wasatch fault and adjacent fault zones provide an opportunity to compare present-day deformation rate estimates obtained from space geodesy with geologic displacement rates over at least four temporal windows, ranging from the last millennium up to 10 Myr. The three easternmost GPS sites of the Basin and Range Geodetic Network (BARGEN) at this(More)
We have acquired and analyzed data from the northern Basin and Range (NBAR) continuous GPS network since July 1996. The RMS residual with respect to the best fitting lines through the individual station position estimates is 2-3 mm in the horizontal and 6-10 mm in the vertical. After the first 395 days of operation, uncertainties in horizontal velocity(More)
[1] A dense, continuous GPS network was established in the Yucca Mountain area in 1999 to provide the most reliable measurements possible of geodetic strain patterns across the nation’s only proposed permanent repository for high-level radioactive waste. The network lies astride a boundary between the geodetically stable central Great Basin and the active(More)
Crust at many divergent plate boundaries forms primarily by the injection of vertical sheet-like dykes, some tens of kilometres long. Previous models of rifting events indicate either lateral dyke growth away from a feeding source, with propagation rates decreasing as the dyke lengthens, or magma flowing vertically into dykes from an underlying source, with(More)
S U M M A R Y We collected data from a transect of continuous Global Positioning System (GPS) sites across the eastern Basin and Range province at latitude 39◦N from 1997–2000. Intersite velocities define a region ∼350 km wide of broadly distributed strain accumulation at ∼10 nstr yr−1. On the western margin of the region, site EGAN, ∼10 km north of Ely,(More)
We apply a new method to target potential geothermal resources on the regional scale in the Great Basin by seeking relationships between geologic structures and GPS-geodetic observations of regional tectonic strain. First, we establish a theoretical basis for understanding how the rate of fracture opening can be related to the directional trend of faults(More)
[1] Two sites of the BARGEN GPS network are located 30 km south of Great Salt Lake (GSL). Lake-level records since mid-1996 indicate seasonal water elevation variations of 0.3 m amplitude superimposed on a roughly ‘‘decadal’’ feature of amplitude 0.6 m. Using an elastic Green’s function and a simplified load geometry for GSL, we calculate that these(More)
We estimated horizontal velocities at 15 locations in the vicinity of Yucca Mountain, Nevada, from Global Positioning System surveys conducted between 1991 and 1996. We used these velocity estimates to infer slip rates on two major Quaternary faults within the eastern California shear zone (ECSZ), the Hunter Mountain and Death Valley faults. The sum of slip(More)