Seafloor Spreading Short Definition
In the theory of plate tectonics the process by which new oceanic crust is formed by the convective upwelling of magma at mid ocean ridges resulting in.
Seafloor spreading short definition. The red sea has not yet completely split arabia from africa but a similar feature can be found on the other side of africa that has broken completely free. In 1912 when alfred wegener proposed that the continents had once been joined together and had split apart the biggest weakness in his hypothesis was the. Seafloor spreading happens at the bottom of an ocean as tectonic plates move apart. Sea floor spreading definition of sea floor spreading.
Seafloor spreading and other tectonic activity processes are the result of mantle convection. Die aussere starre hulle der erde die lithosphare besteht aus platten von. Sea floor spreading der vorgang des auseinanderweichens von ozeanischen platten krustensegmente an mittelozeanischen rucken. Seafloor spreading ist das langsame seitliche auseinanderweichen spreading des ozeanbodens seafloor an divergenten plattengrenzen als teilprozess der plattentektonik und damit der mantelkonvektion grundlagen und begriffe.
Convection currents also recycle lithospheric materials back to the mantle. At ridges in the middle of oceans new oceanic crust is created. Seafloor spreading noun a process in which new ocean floor is created as molten material from the earths mantle rises in margins between plates or ridges and spreads out. The seafloor moves and carries continents with it.
Seafloor spreading definition is the divergence at mid ocean ridges of the tectonic plates underlying the oceans that is due to upwelling from the earths interior of magma which solidifies and adds to the spreading plates. At the mid atlantic ridge and other places material from the upper mantle rises through the faults between oceanic plates to form new crust as the plates move away from each other. Convection currents carry heat from the lower mantle and core to the lithosphere. Mantle convection is the slow churning motion of earths mantle.
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