Why are igneous rocks called primar rocks
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because they are the first and fore most rocks formed on earth. They formed from magma when cooled.Later these igneous rocks transform into sedimentary rocks and then to metamorphic rocks and there is a rock cycle involved in transformation from igneous rock to other type of rocks
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Igneous rocks are created from the cooling of molten magma/lava. All other rocks are derived from them. Because they form the basis of formation of other types of rocks, igneous rocks are known as the primary rocks.
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