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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.
28 sie 2017 · Here, I assess the transmission of ridge-push related stresses in oceanic plates by comparing the magnitude of the ridge-push force to the integrated strength of oceanic plates. The strength is determined based on plate cooling and rheological models.
Ridge push force and slab pull are two key forces that drive tectonic plate movements. Ridge push occurs at mid-ocean ridges, where newly formed, elevated oceanic crust slides down due to gravity, while slab pull takes place at subduction zones where denser oceanic plates sink into the mantle.
Ridge push is a geological force that occurs at the mid-oceanic ridge, where new material rises to the top of the ridge and gravity pulls it down. This force is caused by the elevated topography of the ridge.
Ridge push is the result of gravitational forces acting on the young, raised oceanic lithosphere around mid-ocean ridges, causing it to slide down the similarly raised but weaker asthenosphere and push on lithospheric material farther from the ridges.
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.
One side in the argument holds that the plates are only moved by the traction caused by mantle convection. The other side holds that traction plays only a minor role and that two other forces, ridge push and slab pull, are more important. Some argue that the real answer lies somewhere in between.
