INDIAN GEOGRAPHY

Detailed explanation-1: -Asthenosphere. The asthenosphere is the denser, weaker layer beneath the lithospheric mantle. It lies between about 100 kilometers (62 miles) and 410 kilometers (255 miles) beneath Earth’s surface. The temperature and pressure of the asthenosphere are so high that rocks soften and partly melt, becoming semi-molten.

Detailed explanation-2: -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-3: -Below the asthenosphere is the lower mantle, which reaches a depth of 2900km. As part of the mantle, the asthenosphere is composed mostly of magnesium and iron. The exact boundary between the asthenosphere and the lithosphere is determined by temperature.

Detailed explanation-4: -The lithosphere is the rocky outer part of Earth. It is made up of the brittle crust and the top part of the upper mantle. The lithosphere is the coolest and most rigid part of Earth.

Detailed explanation-5: -The layer below the rigid lithosphere is a zone of asphalt-like consistancy called the Asthenosphere. The asthenosphere is the part of the mantle that flows and moves the plates of the Earth.