Earthquakes 1963-1995; m b > 4 Stein and Wysession, 2003 INTRAPLATE NARROW BOUNDARIES DIFFUSE...
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Transcript of Earthquakes 1963-1995; m b > 4 Stein and Wysession, 2003 INTRAPLATE NARROW BOUNDARIES DIFFUSE...
Earthquakes 1963-1995; mb > 4
Stein and Wysession, 2003
INTRAPLATE
NARROW BOUNDARIES
DIFFUSE BOUNDARY ZONES
• From seismicity and current deformation patterns
Inferred plate boundaries
Gordon and Stein, 1992
Color scale:
Green & Black: Stable
Red: Unambiguous current deformation
Orange: Likely current deformation (earthquakes)
Yellow: Maybe current deformation (from plate cicuits)
relative plate velocities based on seafloor spreading rates and directions plus directions from earthquake slip vectors
NNR-NUVEL-1A
http://sps.unavco.org/crustal_motion/dxdt/dxdt.html