Why do magmas rise toward earth's surface?

Why does magma tend to rise toward Earth's surface? During metamorphism of granite into gneiss, what happens to minerals? What is molten material at Earth's surface called? read more

Start studying Chapter 4 Review. Learn vocabulary, terms, and more with flashcards, games, and other study tools. read more

B. magmas are mainly liquid and contain dissolved fluids such as water; most are less dense than the adjacent solid rock A _____ is an intrusive, igneous rock body that is tabular and concordant (parallel to adjacent sedimentary rocks). read more

Magma rises to the Earth's surface due to a combination of differences in density with other rocks in the crust and pressure. The differences in density cause it to move upward until its density is the same as the other rocks in the crust. read more