METAMORPHIC ROCKS
Part I:
Use your textbook, course
notes, and the metamorphic rocks
provided by your TA to answer the
following questions.
1.
Compare samples 7 and 8.
Which would make a better roofing
shingle? (
Google roofing shingle if
confused
)
Why? (3 pts)
Sample 7 would be better to use as
a roofing shingle. Because it has a
preferred orientation and slate is
naturally mold resistant, fire-resistant, and has a low
water absorption capacity.
2.
Put the following order of metamorphic grade (lowest to highest): schist, migmatite,
phyllite, slate, gneiss. (3 pts)
(Highest)
a)
Migmatite
b)
Gneiss
c)
Schist
d)
Phyllite
e)
Slate
(Lowest)
3.
Look at the sample of Morton Gneiss at the front of the room. What was the parent
rock? What evidence do you see to support this conclusion? (3 pts)
I believe that the parent rock of Morton Gneiss is granite. The reason I think that it is
granite is because it has many layers with folding. Additionally, it shows banding like
gneiss formed in areas of high-grade metamorphism.
