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Ridge push (also known as gravitational slides or sliding plate force) is a proposed driving force for plate motion in plate tectonics that occurs at mid-ocean ridges as the result of the rigid lithosphere sliding down the hot, raised asthenosphere below mid-ocean ridges.
Ridge push force influences tectonic plate movement by causing newly formed oceanic crust at mid-ocean ridges to slide away due to its elevated position. As magma erupts at these ridges and cools, it creates new crust that is warmer and less dense than the older crust.
Ridge push contributes to plate movement by creating a gravitational force that encourages tectonic plates to slide away from mid-ocean ridges. As new oceanic crust forms and elevates the ridge, it creates a slope that aids in this movement.
29 gru 2014 · Definition. Plate Driving Forces: The forces that drive the motions of tectonic plates at the surface. Slab Pull: The force exerted by the weight of the subducted slab on the plate it is attached to. Ridge Push: The pressure exerted by the excess height of the mid-ocean ridge.
Ridge push is a geological force that occurs at mid-ocean ridges, where the elevated position of the oceanic crust causes it to push the tectonic plates away from the ridge. This process is a result of the thermal expansion of the magma at the ridge, which leads to the formation of new oceanic crust.
Ridge-push forces cause two plates to pull apart on the surface. Slab-pull forces pull the plates down. This movement of out and down is also encouraged by convection traction, or clockwise and counterclockwise currents that are present beneath the plates.
ridge push: the force due to the buoyancy of the hot mantle rising to the surface beneath the ridge. viscous drag: the force opposing motion of the plate and slab past the viscous mantle underneath or on the side. This force balance is given by: Fridge − push + Fslab − pull − Fviscous − drag = 0.
