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The Earth's mantle is primarily composed of silicate minerals rich in magnesium and iron, such as olivine, pyroxene, and garnet. It is divided into the upper mantle and the lower mantle, with the upper mantle being partially molten, allowing for convection currents that drive plate tectonics. The mantle accounts for about 84% of Earth's volume and plays a crucial role in geological processes.

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1mo ago

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