Lecture 7 Assignment
GEOS251 | Spring24
Name: _______________________________ Grade: ___/10 pts
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This lecture assignment covers key concept presented in lectures 6 and 5.
Assignment due on Tuesday 6
th
January at 11am.
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1. What are the three processes that are responsible for the variety of igneous rocks observed in the continental crust? [1.5 pts]
2. What are the two main melting mechanisms operating in the mantle? [1 pt]
3. In the diagram A, what makes the solid rock crossing the solidus? In the diagram B, why does the shape of the solidus curve change and move to lower temperature? [2 pts]
4. Name two tectonic settings for mantle melting mechanisms depicted in diagram A and B:
Diagram A: _______________________ [1 pt] / Diagram B: _______________________ [1 pt]
Diagram A: _______________________ [1 pt] / Diagram B: _______________________ [1 pt]
5. Complete the sentence:
A dike is __________________________________________________________ [0.5 pt]
A sill is ___________________________________________________________ [0.5 pt]
6. Circle the right answer: A pluton is smaller or bigger
than a batholith. [0.5 pt]
Answer diagram B:
Answer diagram A:
A
B
