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On mechanical basis what is the most correct feature of the asthenosphere?

Answer and explanation

Correct answer: It is a weak and ductile upper mantle zone below the lithosphere

The asthenosphere is a relatively weak and ductile (plastic) zone of the upper mantle below the lithosphere. Its ductile behaviour enables the movement of lithospheric plates above it. Option A describes the rigid and brittle nature of the lithosphere, not the asthenosphere. Exam tip: link the asthenosphere with plate tectonics and plate movement.

Related tags

AsthenosphereUpper MantleLithospherePlate TectonicsEarth InteriorMechanical LayersInterior Structure Of The EarthInterior Of The Earth

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