Seafloor spreading definition a process in which new ocean floor is created as molten material from the earth s mantle rises in margins between plates or ridges and spreads out.
Sea floor spreading earth science definition.
Seafloor spreading and other tectonic activity processes are the result of mantle convection.
Seafloor spreading is a geologic process in which tectonic plates large slabs of earth s lithosphere split apart from each other.
Evidence in the rocks not long after hess published his ideas other scientists published their measurements of the magnetic properties of atlantic ocean seafloor basalt or the.
The solid surface underlying a sea or an ocean.