Earth's Mantle

Earth's Mantle

Beneath the Earth's surface is a thick layer of rock called the mantle. It sits between the crust and the core and makes up most of the planet's volume. Even though the mantle is solid, it moves very slowly over time. This movement helps shape Earth's surface by driving plate tec...

Beneath Earth's crust lies the mantle, a massive layer between the crust and the core.

The mantle is mainly made of a dense rock called peridotite, which contains green olivine and black pyroxene crystals.

Sometimes, volcanic eruptions bring up rare rocks called kimberlite, containing diamonds formed deep in the mantle under extreme ...