§6-2 “Metamorphic Rocks”. Objectives: Distinguish between regional and contact metamorphism. Distinguish between foliated and nonfoliated metamorphic.

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Presentation transcript:

§6-2 “Metamorphic Rocks”

Objectives: Distinguish between regional and contact metamorphism. Distinguish between foliated and nonfoliated metamorphic rocks and give an example of each.

Metamorphism Changing of one type of rock to another by heat & pressure or chemical processes. Metamorphic rocks are formed from all 3 types of rocks.

Contact Metamorphism Magma rises into existing rocks & the heat causes changes in the minerals.

Regional Metamorphism Caused by tectonic activity at plate boundaries. Friction creates immense heat & pressure which changes the chemical composition of a rock.

Metamorphic Rock Video Clip

Classification of Metamorphic Rocks Only 2 choices: Foliate –Similar to layers –Also called “banding” Nonfoliated –Similar to fracture

Foliated Rocks – show layering or “banding”

Nonfoliated Rocks – Crystals grow as rock heats up Limestone changes to  Sandstone changes to 

Assignments Finish worksheet packet & have checked off. Look at metamorphic rocks in boxes. Go over worksheets Wednesday Test on Thursday in Computer Lab. –Field trip people  test on paper Friday in class –Everyone else  ch 12 vocab on Friday in class STUDY – STUDY --- STUDY

Page 191 –Blue Box #1 If you were to start a rock collection, what 10 rocks would you like to include & why. EXAMPLE: Moon Rock – because they are rare and I was born when the first astronauts landed on the moon