The mechanism by which new seafloor is created at ridges at divergent plate boundaries as adjacent plates move apart. This process may continue at a few centimeters per year through many geologic periods.
Theory in which new oceanic crust is created by volcanic eruptions at the mid-ocean ridge. As new crust is created, it moves away from the ridge at a rate that varies from place to place along the ridge. This movement provides the source of dynamic thrust in the theory of plate tectonics.
the process by which the lithospheric plates either side of an ocean ridge grown by the addition of new material as the plates either side of the ridge move apart.
The process in which the ocean floor is extended when two plates move apart.
The mechanism by which new seafloor crust is created at oceanic ridges and slowly spreads away as plates are separating.
Seafloor spreading is the movement of two oceanic plates away from each other, which results in the formation of new oceanic crust and a mid-ocean ridge.
The mechanism by which new seafloor crust is created at oceanic ridges and slowly spreads away as the plates separate.
The movement of two oceanic plates away from each other, resulting in the construction of a mid-ocean ridge.
The mechanism proposed by Harry Hess which drives plate tectonics. According to this theory, new magma is formed at divergent boundaries, pushing plates away from each other as if on a conveyor belt.
Seafloor spreading is a part of the theory of plate tectonics; it is the process by which continental drift occurs. This mechanism, which is a more accurate version of Alfred Wegener's original drift of continents that "plow" through the sea, was proposed by Harry Hess from Princeton University in the 1960s. This phenomenon is known to be caused by convection currents in the plastic, very weak upper mantle, or asthenosphere.