Which is one of four processes that produces different varieties of igneous rocks?
A) Single source rocks melt to form different types of magma.
B) Magma in a volcano changes mineral composition as soon as it is ejected.
C) Magma stays the same after assimilating nearby rocks.
D) Magma can change its composition by assimilating nearby rocks.

Question

Quizplus · Accepted Answer

Magma can change its composition by assimilating nearby rocks. This is one of the processes that can produce different varieties of igneous rocks. The other processes include different sources of magma, different cooling rates, and different amounts of gas content.

Which Is One of Four Processes That Produces Different Varieties