1. Plate Kinematics – studying how tectonic plates move and deform

2. Finding Euler poles Transform faults Spreading center rates
Slip vectors from earthquakes along the boundary
Geodetic measurements (GPS, VLBI)

3. Euler poles JF
North America
Pacific CA
Cocos
South
America
Nazca

4. Plate Motion Model Results

5. “Geological” Global Plate Motion Model plate boundaries
DeMets et al., 1991

6. GPS measurement of plate motions
Mid-plate - Poland
Near Plate Boundary – Fairbanks Alaska
Prawirodirdjo & Bock, 2004

7. North American Plate Deformation from GPS
Sella et al., 2007

8. Very Long Baseline Interferometry (VLBI)
Distance between Massachusetts and Germany

9. Geodetic Plate Motion Model plate boundaries

10. Comparison of “Geological” and Instantaneous Results

11. The search for a plate motion reference frame – Hotspots?

12. Defining the Hotspot Reference Frame

13. Global plate motions wrt “hotspot reference frame”

14. No-net rotation plate motion model
Argus et al., 2011