The document discusses metamorphic rocks, which are formed from pre-existing rocks through heat, pressure, and chemical reactions typically near tectonic plate boundaries. Metamorphism can change a rock's appearance, texture, mineral content, and crystal structure, forming either foliated or non-foliated rocks. Examples of foliated metamorphic rocks include schist, slate, and gneiss, while examples of non-foliated rocks include marble and quartzite.
5. II. How are Metamorphic
Rocks Formed?
Formed under tremendous heat, great
pressure, and chemical reactions
Can make new minerals
Most are found on or near plate
boundaries
Metamorphism is changing one type of
rock into another as a result of
heat(from mantle), Pressure (from
layers above) and/or chemical
reactions.
6.
7. III. Where does the Heat Come
From?
The heat comes
from:
1. Mantle
2. Pressure of the
layers
3. Movement of the
Plates on Earth
8.
9. IV. What does Metamorphism
change?
Metamorphic rocks
can change:
1. a rocks
appearance, texture
2. crystal structure
3. mineral content
It can form from a/an:
1. Igneous
2. Sedimentary
3. Another
metamorphic rock!
10. a. Foliated – mineral crystals are
arranged in parallel layers or
bands
Examples: Schist, slate, and gneiss
b. Nonfoliated – rocks are not banded
and do not break into layers
Examples: Marble and quartizite
V. Types of Metamorphic
Rocks
18. Tier 1 Metamorphic
Picture
1 picture of foliated
1 picture of non-
foliated
Must have correct
rock names
Must be presented
in an
organized/colorful
way
Chart
Complete chart
Must do research
DOES NOT have
to be colorful