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I. FORMATION OF METAMORPHIC ROCKS:
 
A metamorphic rock is one whose original form has been __________ changed
BY________  AND _____________ HEAT PRESSURE
THIS ALTERATION IS CALLED  _____________  RE -CRYSTALLIZATION
These changes are  NOT   caused by  MELTING
If the rock melted and cooled it would be an _____________  IGNEOUS ROCK
1. Changes  caused by _____________  RE - CRYSTALLIZATION (again)
May include the creation and growth of ________________________  NEW MINERAL CRYSTALS
2. Rocks which are  intensely __________  can also become    ____________ rock  Compressed metamorphic
 
 
MAKING IT MORE DENSE AND RESISTANT TO WEATHERING
The growth of new minerals may cause the rock to appear  BANDED
OR   STRIPES OF  LIGHT DARK MINERALS foliated
pressure pressure pressure
SCHIST SHOWS BANDING
 
It can also ____________ (BEND) OR ______________ ORIGINAL STRUCTURES DESTROY DISTORT
 
 
 
3. There are two types of Metamorphism : ,[object Object],[object Object],Regional Contact
A.Regional metamorphism: occurs over large areas  with  extreme pressures &  temperatures
Photograph of regional metamorphism New York State thruway
 
This extreme heat and pressure is what builds  MOUNTAINS
B. CONTACT METAMORPHISM
IS THE _________ OF CONTACT WHERE AN IGNEOUS INTRUSION MEETS THE EXISTING ROCK BUT _____________ MELT IT ZONE DOES NOT
IGNEOUS INTRUSION Contact metamorphism occurs  only  at the place where the magma contacts rock   SANDSTONE LIMESTONE SANDSTONE SHALE
Any kind of rock: IGNEOUS SEDIMENTARY METAMORPHIC
CAN UNDERGO RE-CRYSTALLIZATION TO FORM METAMORPHIC ROCK.
PARENT ROCK Is rock from  which metamorphic  rock is formed.
Limestone metamorphoses to  become _________________ marble
Sandstone metamorphoses to  become _________________ quartzite
Shale metamorphoses to  become _________________ slate
We will  not  find fossils in  Metamorphic rock because:
The heat and pressure of metamorphism would have destroyed them
TIME TO CHECK OUT THE REFERENCE TABLES TO LOOK AT HOW TO IDENTIFY METAMORPHIC ROCKS

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