METAMORPHIC ROCK LAB
ES 15
SECTION ______ LAB _____ due TODAY
IDENTIFY THE METAMORPHIC ROCKS IN THE CLASSROOM KITS.
Refer to the chart on Page 143. THEN ANSWER THE QUESTIONS BELOW. SHORT
ANSWERS ARE ACCEPTABLE. HAND IN LAB BEFORE LEAVING.
1.
Name three “agents” or causes of metamorphism in rocks.
2.
What is the difference in SCALE between “contact metamorphism” and “regional
metamorphism”? Give an example of the size of area affected for each.
3.
What is meant by “parent” rock?
Match the following metamorphic rock with the correct parent rock. (draw lines)
A.
B.
C.
3.
Marble
Schist
Quartzite
a.
b.
c.
quartz sandstone
shale, phyllite
limestone
Look at the two rocks on the lab labeled “A” and “B”. One of these rocks could be a
“parent” rock and the other a rock that has undergone metamorphism.
Give the rock types: Igneous, Sedimentary, Metamorphic
A.
B.
Describe the TEXTURE of each using correct terms:
A.
B.
Name each rock.
A.
B.
When you look at A and B, what appears similar?__________________________
What appears obviously different in A and B? _____________________________
Which rock has undergone metamorphism? What is the evidence?
What do you think has changed MOST during metamorphism?
(composition or texture?)
GO TO SIDE 2
4.
Use the diagram below to answer the questions:
(This is figure 7.1 from Page 134 of your lab book)
Grades of metamorphism depend on the range and combined effects of temperature
and pressure within the Earth’s crust.
A.
Using the metamorphic rock types, draw lines (slightly curved,
approximately vertical) on the diagram to separate the following areas.
Label each area.
“unchanged rocks” (line already drawn)
low grade metamorphic region
intermediate grade metamorphic region
intermediate – high grade metamorphic region
high grade metamorphic region
B.
Within what grade does contact metamorphism generally exist?
C.
Explain why there is a zone of “contact” metamorphism associated with the
Granite intrusion.