Metamorphic Rock Notes Formation of Metamorphic Rocks 1

Formation of Metamorphic Rocks 1. The process in which metamorphic rocks form is through

Textures of Metamorphic Rock 2. Scientists classify igneous, sedimentary and metamorphic rocks by their

Textures of Metamorphic Rock Foliated Non-foliated 3. Metamorphic rocks have two textures foliated or

Foliated Metamorphic Rock This Photo by Unknown Author is licensed under CC BY-SA 4.

Foliated Metamorphic Rocks 5. This metamorphic rock usually contains aligned (lined up) grains of

Foliated Metamorphic Rock 6. A metamorphic rock can continue to change into another metamorphic

Non-Foliated Metamorphic Rock 7. The texture of a metamorphic rock that has mineral grains

Non-Foliated Metamorphic Rocks 8. These rocks are commonly made of one or only a

Non-Foliated Metamorphic Rocks 9. During metamorphism, the crystals of the minerals may change in

Non-Foliated Metamorphic Rocks 10. Examples of this are quartz sandstone is exposed to heat

Metamorphic Rock Structures 11. When metamorphic rocks change shape because of force placed on

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Metamorphic Rock Notes

Formation of Metamorphic Rocks 1. The process in which metamorphic rocks form is through intense heat and pressure.

Textures of Metamorphic Rock 2. Scientists classify igneous, sedimentary and metamorphic rocks by their texture. This Photo by Unknown Author is licensed under CC BY-SA This Photo by Unknown Author is licensed under CC BY

Textures of Metamorphic Rock Foliated Non-foliated 3. Metamorphic rocks have two textures foliated or non-foliated.

Foliated Metamorphic Rock This Photo by Unknown Author is licensed under CC BY-SA 4. The texture of a metamorphic rock that has mineral grains arranged in planes or bands is called foliated.

Foliated Metamorphic Rocks 5. This metamorphic rock usually contains aligned (lined up) grains of flat minerals. This Photo by Unknown Author is licensed under CC BY-SA

Foliated Metamorphic Rock 6. A metamorphic rock can continue to change into another metamorphic rock if it is exposed to more heat and pressure. For example sedimentary shale becomes Slate which can become Phyllite then become Schist and finally become Gneiss.

Non-Foliated Metamorphic Rock 7. The texture of a metamorphic rock that has mineral grains NOT arranged in planes or bands is called non-foliated. The minerals are NOT aligned. This Photo by Unknown Author is licensed under CC BY-SA

Non-Foliated Metamorphic Rocks 8. These rocks are commonly made of one or only a few minerals. This Photo by Unknown Author is licensed under CC BY

Non-Foliated Metamorphic Rocks 9. During metamorphism, the crystals of the minerals may change in size or composition called re-crystallization. This Photo by Unknown Author is licensed under CC BY-SA-NC

Non-Foliated Metamorphic Rocks 10. Examples of this are quartz sandstone is exposed to heat and pressure and the minerals recrystallize to form Quartzite; also limestone is exposed to heat and pressure and the minerals recrystallize and become marble.

Metamorphic Rock Structures 11. When metamorphic rocks change shape because of force placed on them, they can be squeezed or stretched. This is called deformation. Some deformations are called folds or bends.