Making new rocks from old main content.

Making new rocks from old

Making New Rocks From Old AMNH/R.Mickens

Exhibition Text

Metamorphism is the process by which rocks re-crystallize into new combinations of minerals in response to changing temperature, pressure, and exposure to hot, reactive fluids. The rocks’ texture and grain size are usually altered as well. Metamorphic rocks are created deep in the roots of mountains. Geologists study these rocks to learn more about mountain building and how the Earth’s crust evolves.

For Educators

Topic: Earth Science

Subtopic: Mountain Building

Keywords: Metamorphic rocks, Orogeny, Metamorphism (Geology)

Audience: General