Physics
Scientific paper
Jan 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30b..48c&link_type=abstract
Geophysical Research Letters, Volume 30, Issue 2, pp. 48-1, CiteID 1076, DOI 10.1029/2002GL016129
Physics
7
Tectonophysics: Continental Tectonics-General (0905), Tectonophysics: Continental Tectonics-Extensional (0905), Tectonophysics: Dynamics Of Lithosphere And Mantle-General
Scientific paper
Previous mechanical models of the western U.S. have concluded that plate boundary forces cannot generate far-field deformation. Such models have ignored preexisting large-scale lithospheric strength variations, an assumption that appears to be inconsistent with seismically determined variations in lithospheric structure. We have formulated a three-dimensional viscous flow model with imposed plate motions, but include lateral zones of low viscosity. These models show that strain rates are concentrated in weak zones with adjacent blocks experiencing little deformation. Deformation can extend far inboard of plate boundaries, contrary to the result of previous studies with rheologically homogeneous plates, and apparently compatible with the variation is seismic velocity and GPS determined deformations in western U.S. These results suggest that plate boundary forces cannot be neglected in the deformation of the western U.S., including the Cenozoic extension of the Basin and Range Province.
Choi Eun-Seo
Gurnis Michael
No associations
LandOfFree
Deformation in transcurrent and extensional environments with widely spaced weak zones does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Deformation in transcurrent and extensional environments with widely spaced weak zones, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Deformation in transcurrent and extensional environments with widely spaced weak zones will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1527540