Which statement best describes the formation of an intrusive igneous rock? Here are the choices:
A.Magma solidifies slowly, resulting in a coarse-grained texture.
B.Magma solidifies slowly, resulting in a fine-grained texture.
C.Magma solidifies rapidly, resulting in a glassy texture.
D.Magma solidifies rapidly, resulting in a clastic texture

A.Magma solidifies slowly, resulting in a coarse-grained texture.

Intrusive igneous rocks are created underground when magma, trapped in small pockets cools down.

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GeoPantherid GeoPantherid · Answer 2

The correct answer is - A. Magma solidifies slowly, resulting in a coarse-grained texture.

The intrusive igneous rocks are forming when the magma solidifies very slowly, deep underground, under higher temperatures and pressures. All these conditions contribute to the coarse-grained structure to form on these types of rocks and have it as a trademark. These rocks are very hard rocks, with big density, their colors vary a lot but are more on the dark side usually. Some of them are diorite, granite, pegmatite...