Physics
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30m...6m&link_type=abstract
Geophysical Research Letters, Volume 30, Issue 13, pp. 6-1, CiteID 1673, DOI 10.1029/2003GL017408
Physics
7
Tectonophysics: Dynamics, Seismotectonics, Tectonophysics: Continental Tectonics-Extensional (0905), Seismology: Seismic Hazard Assessment And Prediction, Geodesy And Gravity: Crustal Movements-Interplate (8155), Geodesy And Gravity: Rheology Of The Lithosphere And Mantle (8160)
Scientific paper
GPS data define a broad zone of present day deformation in the eastern Basin and Range province, western US. Using finite element models with elastic upper crust over viscoelastic lower crust/upper mantle and incorporating earthquake cycle effects, we show that these data are consistent with a model whereby most contemporary fault slip is focused on the Wasatch fault zone. Modeled rates of horizontal extension are 3.0-4.5 mm/yr, in agreement with Holocene geologic data. The models are non-unique, in part because much of the Wasatch fault is in the late stages of the earthquake cycle, when surface velocity gradients across the fault are low.
Dixon Timothy H.
Furlong Kevin P.
La Femina Peter C.
Malservisi Rocco
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