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igneous rocks
They formed as heavier and lighter rocks separated
weathering
weathering
Metamorphic rocks were originally igneous or sedimentary rocks. They were altered by being involved in an episode of mountain building, buried deep and subjected to immense pressures and temperatures. In effect they were the roots of the mountains. Later erosion over millions of years removed most of the mountains leaving the altered rocks for us to see.
Metamorphic rocks.
Metamorphic rocks.
igneous rocks
Metamorphic rocks
foliated rocks
If a rock has been altered in composition or texture by pressure, it is called a metamorphic rock.
They formed as heavier and lighter rocks separated
weathering
weathering
Sediment.
You are most likely referring to metamorphism. It can change it's chemical make-up. It is the process by which rocks are altered in texture, composition or chemical structure by extreme heat and pressure.
they are formed by fault block