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the major composition is ultra-mafic rocks i.e. it contains rocks having higher proportion of iron and magnesium

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The upper mantle is primarily composed of solid rock material, with dominant minerals including olivine, pyroxene, and garnet. It extends from about 410 to 660 kilometers below the Earth's surface and experiences high temperatures and pressures that lead to its solid-state flow behavior.

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10mo ago
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Q: What is the composition of the upper mantel?
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