An intrusive rock formed inside the Earth crust, and individual crystal grains can be seen.
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Igneous rock formed deep beneath the earth's surface.
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Plutonic rock is igneous rock that has solidified at depth in the Earth's crust. Having cooled slowly, plutonic rocks are coarse-grained: granites and gabbros are typical plutonic rocks. A body of plutonic rock can be called a pluton, but this word has also been used in a narrower sense for a granite mass occurring at a relatively high level in the...
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Igneous rock derived from magma that has cooled and solidified deep in the crust of the Earth; granites and gabbros are examples of plutonic rocks
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