How slow is the typical flow velocity of rock within a single mantle convection cycle?

Answer

A few centimeters per year

The flow velocity of the mantle material is remarkably slow, often measured in just a few centimeters per year, comparable to the rate at which fingernails grow.

How slow is the typical flow velocity of rock within a single mantle convection cycle?

#Videos

Mantle Convection explained by Peter Bunge - YouTube

GeologyEarthconvectionmantledrive