New Kinematic models for Pacific-North America motion from 3 Ma to present, II: Evidence for a ``Baja California shear zone''

Details New Kinematic models for Pacific-North America motion from 3 Ma to present, II: Evidence for a ``Baja California shear zone'' New Kinematic models for Pacific-North America motion from 3 Ma to present, II: Evidence for a ``Baja California shear zone''

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000georl..27.3961d&link_type=abstract

Geophysical Research Letters, Volume 27, Issue 23, p. 3961-3964

Physics

24

Geodesy And Gravity: Crustal Movements-Interplate, Geodesy And Gravity: Space Geodetic Surveys, Tectonophysics: Continental Neotectonics

Scientific paper

We use new models for present-day Pacific-North America motion to evaluate the tectonics of offshore regions west of the Californias. Vandenburg in coastal Alta California moves at the Pacific plate velocity within uncertainties (~1 mm/yr) after correcting for strain accumulation on the San Andreas and San Gregorio-Hosgri faults with a model that includes a viscoelastic lower crust. Modeled and measured velocities at coastal sites in Baja California south of the Agua Blanca fault, a region that most previous models consider Pacific plate, differ by 3-8 mm/yr, with coastal sites moving slower that the Pacific plate. We interpret these discrepancies in terms of strain accumulation on known on-shore faults, combined with right lateral slip at a rate of 3-4 mm/yr on additional faults offshore peninsular Baja California in the Pacific. Offshore seismicity, offset Quaternary features along the west coast of Baja California, and a discrepancy between the magnetically determined spreading rate in the Gulf Rise and the total plate rate from a geological model provide independent evidence for a ``Baja California shear zone.''

Affiliated with

Also associated with

No associations

Rating

New Kinematic models for Pacific-North America motion from 3 Ma to present, II: Evidence for a ``Baja California shear zone'' 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 New Kinematic models for Pacific-North America motion from 3 Ma to present, II: Evidence for a ``Baja California shear zone'', we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and New Kinematic models for Pacific-North America motion from 3 Ma to present, II: Evidence for a ``Baja California shear zone'' will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1043518