Question

What is the special feature of the upper mantle

Answer 1

Answer:

Its chemical composition is very similar to the crust. One difference is that rocks and minerals of the mantletend to have more magnesium and less silicon and aluminum than the crust. The first four most abundant elements in the upper mantle are oxygen, magnesium, silicon, and iron.

Answer 2

The special feature of the upper mantle is the asthenosphere layer.

Explanation:

• It is the chemical composition, which is quite similar to the crust.
• One of the difference is which the rocks and minerals of mantle has tend to have more amount of magnesium and less amount of "silicon and aluminum" than the crust.

• This is usually made up rock which is a fluid and it can move.

• The "1st four most abundant elements" in upper mantle such as iron, silicon, oxygen, and magnesium.

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