Which statement best describes the formation of an intrusive igneous rock?
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.
Answer (3)
A.Magma solidifies slowly, resulting in a coarse-grained texture.
Intrusive igneous rocks are created underground when magma, trapped in small pockets cools down.
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...
The answer is A: Magma solidifies slowly, resulting in a coarse-grained texture. Intrusive igneous rocks form deep within the Earth where magma cools slowly, allowing for larger crystal growth. Examples include granite and diorite, which display a coarse-grained texture.
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