Process by which ocean floors spread laterally from crests of main ocean ridges. As material moves laterally from the ridge, new material replaces it along the ridge crest by welling upward from the mantle. compare continental drift , plate tectonics

rift in underwater mountain range where new oceanic crust is formed. Read more in the NG Education Encyclopedia

the creation of seafloor crust moving outward from the mid-oceanic ridge.

The mechanism by which new seafloor crust is created at oceanic ridges and slowly spreads away as tectonic plates separate.

The mechanism by which new seafloor crust is created at oceanic ridges and slowly spreads away as plates are separating.

(n) - the process where 2 oceanic plates are separating from one another

The mechanism by which new seafloor crust is created at oceanic ridges and slowly spreads away as plates are separating.

The theory that the seafloor slowly spreads and moves away from mid-ocean ridges. The spreading is believed to be due to convection cycles of subterranean molten material that cause the formation of t [..]

the concept that new oceanic crust is created at mid-ocean ridges, causing lateral movement of the crust

A hypothesis, proposed by the American geophysicist Harry Hess at Princeton University in 1960, that oceanic crust forms along the mid-oceanic ridge system and spreads out laterally away from it. Ther [..]