Motion of tectonic plates changes less often than first thought

Significant changes in the motion of Earth’s tectonic plates has been found to occur less frequently than was previously thought.

Seismologists have taken into account “noise” - the portion of data unrelated to the Earth’s plate motions - and found plates move on a timescale no shorter than five million years.

It was previously thought plates experience significant motion changes less than once every million years.

Read more at Australian National University