How Far Down Is The Asthenosphere?
How Far Down Is The 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. How far down is the lithosphere? Lithosphere, rigid, rocky outer layer of the Earth, consisting of the crust and the solid outermost