Question

how does the lower mantle differ from the lower mantle ?

Answer 1

Answer:

There are very small differences between the two layers. The upper mantle has Olivine (a very special rock), compounds with silicon dioxide, and a substance called Peridotite. The lower mantle is more solid than the upper mantle.

Answer 2

Answer:

The upper mantle adjoins the crust to form the lithosphere, whereas the lower mantle never comes in contact with the crust. ... The lower mantle temperature, in contrast, reaches over 7,230 degrees Fahrenheit or 4,000 degrees Celsius. Pressure is one great difference between the upper and lower mantle.

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