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The upper mantle is made of rock that is rich in oxygen O, iron Fe, magnesium Mg, and aluminum Al. It extends to approximately 1800 ? below the surface.
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The upper mantle is made of rock that is rich in oxygen O, iron Fe, magnesium Mg, and aluminum Al.

It extends to approximately 1800 ?
below the surface.

User Sergey Chikuyonok
by
4.7k points

1 Answer

3 votes

Answer: Mantle.

Step-by-step explanation:

The mantle under the crust is about 1,800 miles deep (2,890 km). It is composed mostly of silicate rocks rich in magnesium and iron.

User Jeromy Anglim
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