Exam (elaborations) Week 5 Exam (timed and single access)Solved (SCI138)

.Week 5 Exam (timed and single access)Solved

Week 5 Exam (timed and single access)
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Part 1 of 3 - 40.0/ 52.0 Points

Question 1 of 25
4..0 Points
At what temperature does diagenesis end and metamorphism begin?

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A. 1,000 bars

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B. 3,000 kbars

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C. 100 degrees Celsius

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D. 200 degrees Celsius




Feedback:Metamorphism starts at around 200 degrees Celsius. Below that temperature is
considered diagenesis, which includes sediments solidifying (compacting and cementing) into
sedimentary rocks.
Question 2 of 25
4..0 Points
Which metamorphic facies is associated with subduction zones?

,.Week 5 Exam (timed and single access)Solved
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A. greenschist

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B. lawsonite-blueschist

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C. granulite

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D. epidote-eclogite




Feedback:by analyzing the Chapter 6 diagram, lawsonite-blueschist is shown on the left at a low
temperature but at a high pressure. The associated diagram indicates that high pressure and low
temperature minerals are found at subduction zones.
Question 3 of 25
0..0 Points
Which type of metamorphism is responsible for the greatest amount of deformation?

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A. contact

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, .Week 5 Exam (timed and single access)Solved

B. burial

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C. subduction

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D. fault

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E. regional




Question 4 of 25
4.0/ 4.0 Points
What is the texture of this rock?