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What is the Earth's crust made of

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Above the core is Earth’s mantle which is made up of rock containing silicone iron magnesium aluminum oxygen and other materials the rocky surface layer of earth called the crust is made up mostly of oxygen silicone aluminum iron calcium sodium potassium and magnesium
User Shilly
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The crust, is made up of mostly oxygen, silicon,aluminum, iron, calcium, sodium, potassium and magnesium
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