write Short notes on
mantle
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Explanation:
The mantle is the mostly-solid bulk of Earth's interior. The mantle lies between Earth's dense, super-heated core and its thin outer layer, the crust. The mantle is about 2,900 kilometers (1,802 miles) thick, and makes up a whopping 84% of Earth's total volume. ... Over millions of years, the mantle cooled.
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The Mantle :
- The portion of the interior beyond the crust is called the mantle.
- It is in a solid - state.
- It has a density higher than the crust portion.
- The thickness ranges from 10 - 200 km.
- The mantle extends from Moho’s discontinuity to a depth of 2,900 km.
- The asthenosphere is the upper portion of Mantle.
- It is the chief source of magma that finds its way to the surface during volcanic eruptions.
- The crust and the uppermost part of the mantle are called the lithosphere.
- The major constituent elements of the mantle are Silicon and Magnesium and hence it is also termed as SIMA.
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