The mountain chains with their deep roots in the lithosphere , (whose depth comes to about ten to fifteen times their height above the earth's surface) tend to subside these violent motions , lessen the powerful staggering of the earth's rotational axis a.......

They were astonished to find that many volcanic mountain chains extended throughout all oceans along thousands of kilometers and they called them the Mid-ocean Mountains. By studying these oceanic mountain chains, it became clear that they were formed as.......