Metamorphic Rock - Chp 6

Question 1

What is metamorphism?

Answer 1

refers to solid-state changes to rocks in Earth’s interior produced by increased heat and pressure.

Question 2

What is metamorphic rock?

Answer 2

any rock that has changed in texture, mineralogy, or chemical composition.

Question 3

Metamorphic rock is produced from:

Answer 3

• Igneous rocks
• Sedimentary rocks
• Other metamorphic rocks

Question 4

What are the effects of Pressure and Temperature on Metamorphic rock?

Answer 4

Pressure: Increasing pressure decreases space for mineral growth.
Metamorphic rocks tend to be more dense and stable at higher pressures.

Temperature: Increasing temperature influences the energy state of atoms; different atoms are stable at different energy levels.

Question 5

List Example of Metamorphic rock for Each classification:

Answer 5

Fiolated: Slate, Schist, Phyllite
Non-Fiolated: Marble, Quarzite

Low Grade: Slate, Phyllite
Medium Grade: Schist
High grade: Magmaitite and Gneiss

Question 6

List Sources of Heat

Answer 6

There are 2 sources:
1. Geothorm: Temperature increases with depth within the surface of the earth.

2. Ingenous Intrusions:
   Localized increases in temperature.

Question 6

What are the Sources of Pressure:

Answer 6

• Burial
• Convergence
• Directed pressure

Directed pressure is what causes Lineations and Foloiotions.

Question 7

Where does Metamorphism occur?

Answer 7

• Regional: Widespread changes in temperature and pressure due to tectonic forces at convergent plate boundaries.