SOLAR SYSTEM

Detailed explanation-1: -Asthenosphere composition and structure Rock in the asthenosphere is close to the melting point. The temperature sits at around 1500°C, give or take 100°C. But it avoids melting because the pressure keeps it solid. For any type of rock, the melting point corresponds directly to the pressure exerted on it.

Detailed explanation-2: -The lithosphere-asthenosphere boundary is conventionally taken at the 1, 300 °C (2, 370 °F) isotherm. Below this temperature (closer to the surface) the mantle behaves rigidly; above this temperature (deeper below the surface) it acts in a ductile fashion.

Detailed explanation-3: -The temperatures increase as you go deeper into the earth, with the Lithosphere, compromised of the Crust and upper mantle, being the coolest averaging about 300-500°C. The Asthenosphere is the next layer, averaging about 1, 300°C, making it slightly more fluid than the lithosphere above it.

Detailed explanation-4: -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-5: -Properties of the asthenosphere In general, as the pressure is increased on a material, the melting point increases. The temperature of the rocks that constitute the asthenosphere is below their melting point. As temperature or pressure on increases, the material tends to deform and flow.