asthenosphere वाक्य
उदाहरण वाक्य
मोबाइल
- The volcanic rocks are derived from decompression melting of the asthenosphere, with garnet and lherzolite as precursors.
- Tectonic plates are able to move because the Earth's lithosphere has greater strength than the underlying asthenosphere.
- Two main zones are distinguished in the upper mantle : the inner asthenosphere composed of world's oceans combined.
- The outer portion of the Earth is divided into an upper, lithosphere layer and a lower, asthenosphere layer.
- The lithosphere is underlain by the asthenosphere which is the weaker, hotter, and deeper part of the upper mantle.
- The upper part of the asthenosphere is believed to be the zone upon which the great rigid and brittle lithospheric faults.
- Mechanically, it can be divided into lithosphere, asthenosphere, mesospheric mantle, outer core, and the inner core.
- These small alkalic volcanoes are small percent melts of asthenosphere that exploit bending-related lithospheric faults to reach the seafloor.
- The crustal lithosphere is in unstable mechanical equilibrium because the underlying mantle lithosphere has a greater density than the asthenosphere below.
- Colder material in the lithosphere resists flow while the " warmer " material in the asthenosphere contributes to its lower viscosity.
- This particular null may have occurred because the subducted slab was in contact with relatively cool continental lithosphere, not hotter asthenosphere.
- The buoyant fluids then rise into the asthenosphere, where they lower the melting temperature of the mantle and cause partial melting.
- The heat expelled by the magma expands the lithosphere and asthenosphere at the ridge, pushing them above the surrounding ocean floor.
- However, most scientists working today believe that the asthenosphere does not directly cause motion by the friction of such basal forces.
- Oceanic lithosphere is less dense than asthenosphere for a few tens of millions of years but after this becomes increasingly denser than asthenosphere.
- Oceanic lithosphere is less dense than asthenosphere for a few tens of millions of years but after this becomes increasingly denser than asthenosphere.
- Plumes are postulated to rise through the mantle and begin to partially melt on reaching shallow depths in the asthenosphere by decompression melting.
- In plate tectonics, the horizontal movement of tectonic plates over the Earth's soft asthenosphere causes horizontal forces within the crust.
- More recent studies by Explorer and Juan de Fuca Plates, the subducted plate asthenosphere may possibly flow upward into the mantle wedge.
- The abyssal plain is formed when the lower oceanic crust is melted and forced upwards by the asthenosphere layer of the upper mantle.
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