Vesicles are a term used to describe a texture in __________ igneous rocks.
A)crystalline
B)glassy
C)pyroclastic

Question

Quizplus · Accepted Answer

Vesicles are small, spherical-shaped cavities that form when gas bubbles are trapped within magma as it cools quickly to form glass. Therefore, only glassy igneous rocks can have vesicles. Crystalline igneous rocks have interlocking crystals, and pyroclastic igneous rocks are made up of fragmented pieces of volcanic material, neither of which can contain vesicles.

Vesicles Are a Term Used to Describe a Texture in __________