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Which of the following rock has formed the Earth's crust

This question belongs to Geography Lithosphere
Lithosphere
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Which of the following rock has formed the Earth's crust?

Answer & Solution
Correct Answer: Option A
Igneous rock has formed the Earth's crust. Most of the Earth's Crust is formed of Sial and Sima i.e. (Silica, Aluminium and Silica Magnesium) composition. Both of thes rock types are granitic in nature being of igneous formation (origin).
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