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Metamorphic rocks are formed by heat and pressure deep beneath the Earth's surface. Any type of rock can change into a metamorphic rock.
The picture shown above (on the left) is called Amphibolite. Amphibolite is a non-foliated metamorphic rock. The sample above is about 2 inches (five cenimeters)
The picture shown above (on the right) is a rock called Slate. Slate is a foilated metamorphic rock. The sample above is about 2 inches (five centemeters) across.
The picture shown above (on the right) is a rock called Slate. Slate is a foilated metamorphic rock. The sample above is about 2 inches (five centemeters) across.
The picture shown above (on the left) is called Marble. Marble is a non-foliated metamorphic rock. The sample above is about two inches (five centimeters) across.
The picture shown above (on the left) is known as Gneiss. Gneiss is a foliated metamorphic rock. The sample above is about two inches (five centimeters) across.
The picture shown above (on the left) is known as Gneiss. Gneiss is a foliated metamorphic rock. The sample above is about two inches (five centimeters) across.