Coarsely crystalline igneous textures indicate that:
A) there was a lot of gas in the magma
B) the rock cooled quickly
C) the rock broke apart as it flowed
D) the rock cooled slowly
E) the ash and pumice were hot and became compacted

Question

Quizplus · Accepted Answer

Coarsely crystalline textures in igneous rocks indicate that the rock cooled slowly, allowing large crystals to form. This typically occurs deep underground, where cooling rates are much slower than at the surface.

Coarsely Crystalline Igneous Textures Indicate That