Lower mantle
The deep region of Earth’s mantle extending from about 660 kilometers depth to the core–mantle boundary, roughly 2,900 kilometers below the surface. It consists mainly of dense silicate minerals under immense pressure and temperature.
The deep region of Earth’s mantle extending from about 660 kilometers depth to the core–mantle boundary, roughly 2,900 kilometers below the surface. It consists mainly of dense silicate minerals under immense pressure and temperature.