Which of the following igneous rocks can be composed of fragments?
A) tuff
B) scoria
C) volcanic breccia
D) all of these

Question

Quizplus · Accepted Answer

All of these rocks (tuff, scoria, and volcanic breccia) can be composed of fragments. Tuff is made of volcanic ash and fragments ejected during an eruption, scoria is a vesicular volcanic rock that can contain fragments of other rocks, and volcanic breccia is composed of larger volcanic fragments.

Which of the Following Igneous Rocks Can Be Composed of Fragments