1. Metamorphism

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3. Why animorphs?

4. Metamorphosis
Meta= changed
Morphosis= shape

5. Metamorphosis (caterpillar)
Metamorphism (rocks)

6. Metamorphic Rock
Rocks in which the structure, texture, or composition of rock have changed.

7. Metamorphic Rock
All 3 types of rock (metamorphic, igneous, & sedimentary) can be changed by heat, pressure, or combo of both

8. Origins of Metamorphic Rock
Can start out as an igneous or sedimentary rock or a metamorphic rock!
Changes into metamorphic rock at least 2 km below surface

9. 3 Ways Rock Can CHANGE into a Metamorphic Rock
1. extreme heat( * C or more!)
2. Extreme pressure (from rock layers above)
3. movements in Earth’s crust that rearrange minerals inside a rock into bands (layers/stripes).

10. 2 Types of Metamorphism 2. regional metamorphism
  1. contact metamorphism
2. regional metamorphism

11. 2 Types of Metamorphism 1. contact metamorphism
* magma moves through the crust, it heats the surrounding rock and changes it.
* The rock that magma touches directly experiences the most change.
* Can change minerals into new minerals.
* Where does this happen? Near igneous intrusion
enfo.agt.bme.hu

12. Contact Metamorphism

13. Contact Metamorphism

14. 2. regional metamorphism
2 Types of Metamorphism
2. regional metamorphism
*Temperature & pressure are increased, causing rock to become deformed and change chemically.
Happens when there is great pressure from pieces of Earth’s crust colliding.
Where does it happen?
deep under mountains or continents

15. Composition of Metamorphic Rock
Some minerals cannot survive at certain temperatures and pressures, so they change into new minerals.
SEE pg. 109

16. Foliated Rock
Texture in which the mineral grains are parallel or arranged in plains or bands.
SEE PAGE 109

17. Non- Foliated Rock
Texture of metamorphic rock in which mineral grains are arranged randomly.
2 examples: marble & quartzite

18. Non- Foliated Rock How? During metamorphism, recrystallization occurs
How?
During metamorphism, recrystallization occurs
Add to sheet:
Recrystallization: process in which mineral crystals change size or composition.
Ex. Limestone undergoes metamorphosis and the calcite crystals become larger, thus forming marble.

19. Each time metamorphic rock is exposed to more heat and pressure, it becomes a new metamorphic rock.
Ex. (See Figure 5 on pg. 109)
Gneiss (comes from schist)
Slate (comes from sedimentary shale)

20. Deformation: (add to notes) a change in the shape of a rock caused by a force placed on it. Forces might cause a rock to be stretched or squeezed

21. Q: How do these become non-foliated metamoprhic rocks?.
Non-foliated Rocks
Texture of metamorphic rock in which mineral grains are arranged randomly
Examples
Marble
Quartzite
Q: How do these become non-foliated metamoprhic rocks?
Starts out as limestone, recrystallization causes mineral grains to grow= Marble.
A: Metamorphism causes recrystallization (process in which mineral crystals change size or composition).

22. Rock Cycle

23. Igneous Rock Formed from magma & lava cooling and hardening.
Formed from magma & lava cooling and hardening.

24. Sedimentary Rock
Formed by weathering, erosion, deposition, compaction, cementation.

25. Metamorphic Rock Formed by extreme heat & pressure.
Formed by extreme heat & pressure.

26. All rocks can change into ANY other type of rock.
ROCK CYCLE
All rocks can change into ANY other type of rock.

27. Rock Cycle

28. Rock Cycle

29. Rock Cycle Intro Video
Rock Cycle Movie
Start at 7:22-end

30. Rock Cycle Intro Video
An Igneous rock, a sedimentary rock ,and a metamorphic rock can all become a new igneous rock if they melt into magma/lava, cool, and harden.
An Igneous rock, a sedimentary rock ,and a metamorphic rock can all become a new sedimentary rock if they are broken down, carried away as sediment, deposited, and then compacted and cemented together to form new rock.
An Igneous rock, a sedimentary rock ,and a metamorphic rock can all become a new metamorphic rock if they go through extreme heat and pressure.