Metamorphic Rock Metamorphism: Changing of one type of rock to another by: Heat Pressure Chemical reactions Metamorphism makes rocks stronger or more.

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Presentation transcript:

Metamorphic Rock Metamorphism: Changing of one type of rock to another by: Heat Pressure Chemical reactions Metamorphism makes rocks stronger or more resistant

Contact Metamorphism l hot magma pushes through existing rock, heating surrounding rock and changing it to metamorphic.

Classification of Metamorphic rock Foliated & Non-foliated

Foliated Rocks: §Have visible layers §Mineral grains are flattened and aligned when pressure is added PRESSURE

Gneiss has banded foliation Granite Gneiss

Slate has banded foliation Shale Slate

Schist has banded foliation

Non-foliated Rocks: §These DO NOT have layers of crystals.

Quartzite has no foliation (layers) SandstoneQuartzite

Marble has no foliation (layers) Limestone Marble

§Finished Marble §Unfinished Marble

For centuries marble has been used as a strong building material. It has been used to create grand buildings, sculpted statues and tombstones that have lasted for centuries