The mantle makes up the vast majority of the Earth's interior. The deep, incredibly hot core of the Earth is separated from its thin crust by the mantle. The mantle is approximately 2,900 kilometers (1,802 miles) deep and makes up an incredible 84% of the Earth's total volume.
Why is the mantle of Earth significant?
The thermal and mechanical driving factors for plate tectonics are provided by the Earth's mantle, which also plays a significant role in the evolution of the crust. The majority (> 90%) of the heat released by the core is convectively transported through the mantle to the lithosphere's base.
Mantle plumes that are produced close to the core-mantle boundary layer may carry the remaining material upward. Seismology's ability to resolve mantle structures has significantly improved during the past ten years, and currently, we can discern certain details as small as 100 km.
The fate of these descending lithospheric slabs is a topic of constant debate and discussion, as the mantle also serves as their final resting place.
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