Which rock class would be expected around the Rincon de la Vieja volcano?

• A. Sedimentary
• B. Metamorphic
• C. Igneous
• D. Granite

Answer: (C)

The correct answer is igneous rock, which forms from the cooling and solidification of magma or lava. Around a volcano like Rincon de la Vieja, igneous rocks are predominant due to the volcanic activity that produces molten rock material. As magma rises to the surface during eruptions, it either erupts as lava or cools underground, resulting in igneous formations.

Sedimentary rocks, on the other hand, are formed from the accumulation and compaction of mineral and organic particles. While sedimentary rocks can be found in many geological settings, they are typically not the primary rock type associated with active volcanic regions.

Metamorphic rocks arise from the alteration of existing rocks (either igneous, sedimentary, or other metamorphic rocks) due to heat, pressure, or chemically active fluids. While it is possible for metamorphic rocks to be present in volcanic regions due to tectonic processes, they do not form from volcanic activity itself.

Granite is a specific type of igneous rock, but it is usually formed from the slow crystallization of magma beneath the Earth’s surface and might not be as commonly found around active volcanic areas like Rincon de la Vieja, where more diverse igneous rocks such