Earthquakes ; m b > 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