Sedimentary Rock Quiz tomorrow ! (Half Period Quiz)

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Presentation transcript:

Sedimentary Rock Quiz tomorrow ! (Half Period Quiz) Metamorphic Rocks Sedimentary Rock Quiz tomorrow ! (Half Period Quiz)

Aim: What environmental factors are needed to form a metamorphic rock? Do Now: What do you think the word metamorphism means?

Metamorphism To Change Form 2 types of metamorphism Regional and Contact

Where does metamorphism usually take place? Areas of INTENSE HEAT AND PRESSURE

Contact Metamorphism Hot magma moves into rock LOW GRADE Example: Limestone  Marble

Regional Metamorphism Occurs during mountain-building HIGH GRADE Example: ShaleGneiss

Agents of Metamorphism HEAT AND PRESSURE Both heat and pressure INCREASE with depth

Heat Heat drives RECRYSTALLIZATION (Creates new minerals)

Pressure Tends to create new minerals Forms bands because of MINERAL ALIGNMENT

Classification (Page 7 ESRT) Foliated and Nonfoliated Rocks

Foliated Layered or Banded Appearance

Nonfoliated Rocks Does not have a banded texture Most nonfoliated metamorphic rocks contain only one mineral Quartzite Metaconglomerate

Homework Textbook HW (Sedimentary Rock HW) Read Pages 70-74 Answer HW problems #1-7

Exit-Slip In what types of environments does metamorphism take place?