ESC 102 Metamorphic Rocks
Refer to the rocks in your lab and the identification chart.
1. Name two metamorphic textures.
2. Name four foliated rocks and list the grade of metamorphism for each:
Name Grade (low, med, high)
3. Name two non-foliated rocks.
4. Refer to the tectonic diagram.
List three tectonic settings in which metamorphic rocks are likely to be found.
Describe the intensity of temperature and pressure at each tectonic setting.
Tectonic Setting Temperature Pressure
1.
2.
3.
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The color map shows the large scale regional metamorphism over the New England States and New York.
7.
8.
6.
Geologists make a map like this using index minerals found in rocks – the minerals tell a history of the pressure and temperature the rocks were subjected to.
Note: Do not color the map – a key is provided.
Answer these questions:
5. What index minerals are present at
Low Grade:
Medium Grade:
High Grade:
Describe the pattern of high grade to lower grade on the map.
Why is western New York State not metamorphosed?
Why is Long Island not metamorphosed?