GEOLOGY

Detailed explanation-1: -The asthenosphere is solid upper mantle material that is so hot that it behaves plastically and can flow. The lithosphere rides on the asthenosphere. The asthenosphere is solid upper mantle material that is so hot that it behaves plastically and can flow. The lithosphere rides on the asthenosphere.

Detailed explanation-2: -The lithosphere is a thin layer of rock (average density of 2.7 grams per cc) and “floats” on top of a plastic-like layer called the asthenosphere.

Detailed explanation-3: -Magma is the molten rock below the crust, in the mantle. Tremendous heat and pressure within the earth cause the hot magma to flow in convection currents. These currents cause the movement of the tectonic plates that make up the earth’s crust.

Detailed explanation-4: -The asthenosphere is a part of the upper mantle just below the lithosphere that is involved in plate tectonic movement and isostatic adjustments. It is composed of peridotite, a rock containing mostly the minerals olivine and pyroxene.

Detailed explanation-5: -The asthenosphere is a plastic, solid layer of the mantle made of rock that flows very slowly and allows tec-tonic plates to move on top of it. Beneath the asthenosphere is the mesosphere, the lower part of the mantle.