rmsgrey wrote:For 1cm/s, that's very roughly 1 atom added to a chunk of material for every 100 moles of that atom there were before, every second
dM/dt = 4πρR2(dR/dt)
(dM/dt)/M = 3(dR/dt)/R
R = 6,371,000 m (average radius for oblate earth)
(dM/dt)/M = 4.7e-9 /s
Avogadro's number = 6.02e23 molecules/mole
4.7e-9 * 6.02e23 --> 2.8e15 molecules per mole per second
I'll leave the computation of mechanical shear through the crust and against the mantle for others. Circulatory patterns in air demonstrate what Coriolis acceleration can do, and in this case Coriolis acceleration is shearing the plate, along with differential growth top to bottom. There's already a lot of built-up strain in the system; we can expect the heating and shear to release some of that.
My prescription: head for Antarctica, and assemble lots of rockets when you get there.