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All layers… down to a depth of about… kilometers are known as the upper mantle. The average temperature of the upper mantle is…degree C. This zone has… like iron, magnesium, silicon, and aluminum
The layer of the earth down to a depth of about 2900 kilometres is known as mantle. The temperature at mantle varies from 200 °C at the upper boundary with the crust to approximately 4,000 °C at the core-mantle boundary. This zone has minerals like iron, magnesium, silicon and aluminum.