Transcript Metamorphic Rocks

Metamorphic
Rock
At your table, assign
each person a particular
card suit. Who will be
diamonds, spades, clubs
and hearts?
What do you think of
when you hear the term
“morph?”
Metamorphic Rocks
Form when heat and pressure
beneath Earth’s surface change or
morph a rock.
What does the word “contact”
mean?
What does the word “region”
mean?
Contact Metamorphism
A rock is formed because magma
contacts or touches rock and heats it
up.
’s Why does contact
metamorphism not create an
igneous rock?
Regional Metamorphism
A rock is formed because pressure
chemically changes the rock. Occurs
DEEP in the Earth OR where crust
collides
’s What types of rocks do you
think can become metamorphic
rock?
Examples of Metamorphic
Rocks
Granite = Gneiss
Shale = Slate
Sandstone = Quartzite
Limestone = Marble
Muscovite = Schist
s What type of rock is granite and shale?
What type of rock is sandstone and
limestone?
Foliated
Layers or bands of a rock
Gneiss
Non-Foliated
No pattern to the grains
http://geology.com/rocks/metamorphicrocks.shtml
Index – where you find something
that you are looking for in a book
Index mineral – we KNOW how much heat and pressure are needed to
form it, so that helps us KNOW how much
pressure was in the area around it.
Granite
Gneiss
Sandstone
Quartzite
Muscovite
Schist
Shale
Slate