1.   As it loses the heat that fuels its steady churning, the plate motions on the surface are slowly winding down.

2.   An excellent guide to the study of plate motions, which has a strong practical bias, is that by Cox and Hart.

3.   Hawaii has exhibited a much faster rate of construction, but its volcanism will be short-lived as it will be carried away from its magma source by plate motion.

4.   Huge rolls of magma move like corkscrews in the direction of plate motion, drawing fresh material from below.

5.   Schweig said standard models of strain accumulation based on plate motions should not be used in New Madrid.

6.   The new finding, the team said in Nature, may add new understanding to the riddle of what drives plate motion.