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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. Let's cover a final force a subducting plate would experience, the ridge-push force. This force results from the elevation of oceanic ridges above the seafloor. This difference in height leads to pressure that 'pushes' the plate away from the ridge.
In this model, plates move through a combination of pull from the weight of the subducting edge of the plates, and through the outward pushing of an ocean ridge where magma is rising and forming new crust (Figure 4.3.2).
30 paź 2019 · In the framework of plate tectonics, the surface is represented by rigid plates separated along discrete plate boundary faults (1, 2), placing the focus on the forces acting at the edge of plates (ridge push, slab pull, and shear along transform faults) and at their base (active or passive mantle drag) (3).
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.
24 kwi 2024 · 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 is the pushing force of plates sliding off a mid-ocean ridge. Force generated by mid-oceanic ridges approximated by: F r p = g e ( ρ m − ρ w) ( L 3 + e 2) where F r p is the ridge push per unit length (unit: N m − 1 ), e is the relief between ridge axis and cooled plate (unit: m ), L is the plate thickness (unit: m ).
