Geology 110 (GEO10) – Metamorphic Rocks
Name: _______________________________________
Metamorphic Rocks
Most of the bedrock under the soil of Gorham is metamorphic.
What is metamorphic rock?
Most of Gorham’s bedrock is described as kyanite-staurolite shist.
What is schist?
What are kyanite and staurolite?
Are there other types of metamorphic rock?
How are metamorphic rocks classified?
How was Gorham’s schist formed?
Silurian-Ordovician
Reading Notes – Section 3.4 Metamorphic Rocks, page 80.
When do metamorphic rocks form?
Where are the temperatures and pressures required by the metamorphic processes found?
What are contact metamorphism and regional metamorphism:
 Contact metamorphism:

Regional metamorphism:
What are the agents of metamorphism?
The white quartz veins found in Gorham (lots of examples on the USM campus), as well as
the pyrite and quartz veins around Bethel, started when magma superheated mineral rich
water that was forced to the surface under high pressure. These mineral-rich water solutions
are called ___________________ _______________________.
Metamorphic rock can be classified as foliated or non-foliated.
What causes foliated rock?
Describe foliated rock.
What are two examples of foliated metamorphic rock?
What is nonfoliated metamorphic rock?
What are three examples of nonfoliated metamorphic rock?
Metamorphic rock is rock changed from a previous rock form, The earlier rock is called the
parent rock. Use table 3 on page 84 to identify the parent rock for each of these
metamorphic rocks: List whether the rock is foliated or nonfoliated.
Metamorphic Rock
Slate
Phylite
Schist
Gneiss
Marble
Quartzite
Anthracite
Foliated or Nonfoliated
Parent Rock