The lower part of the mantle is called the "lower mantle" or "mesosphere", while the upper part of the mantle is referred to as the "upper mantle" or "asthenosphere".
It is 2,900 kilometers
The lower mantle is more rigid and dense than the asthenosphere in the upper mantle because of higher pressure and temperature conditions. The increased pressure in the lower mantle prevents rocks from flowing as easily as in the asthenosphere. This leads to higher density and rigidity in the lower mantle region.
The mantle is divided into the upper mantle, transition zone, and lower mantle. The upper mantle is beneath the lithosphere, the transition zone lies between the upper and lower mantle, and the lower mantle extends to the outer core.
The mantle is divided into two main layers: the upper mantle and the lower mantle. The upper mantle is closer to the Earth's crust and is more rigid, while the lower mantle is hotter and flows more easily due to higher temperatures and pressures.
99,877 km
2900 km
The mesosphere
The middle mantle is just above the lower mantle.
The Lower Mantle
The lower part of the mantle is called the "lower mantle" or "mesosphere", while the upper part of the mantle is referred to as the "upper mantle" or "asthenosphere".
The Earth's mantle is approximately 2,900 kilometers thick and is composed of solid rock that lies between the Earth's crust and core. It is mainly made up of silicate minerals and is responsible for convection currents that drive plate tectonics and other geological processes on the planet.
It is 2,900 kilometers
The lower mantle is beneath the crust.
The upper mantle and the lower mantle.
410km
The lower mantle is located in the middle layer of the Earth's interior, known as the mantle. The mantle is divided into two main regions: the upper mantle and the lower mantle. The lower mantle is situated beneath the upper mantle and above the outer core.