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ConcepTest: Deformation Sequence of Events

ConcepTest questions by David McConnell, David Steer , Walter Borowski, Jeffrey Dick, Annabelle Foos, Jeffrey Knott, Alvin Konigsberg, Michelle Malone, Heidi McGrew, Kathie Owens, and Stephen Van Horn

Question:

The diagram below shows rock units with their age in millions of years. When did deformation (uplift or mountain building) occur?

Cross section with crustal deformation

a. less than 60 million years ago
b. more than 200 million years ago
c. between 60—200 million years ago
d. between 200 - 230 million years ago.

Student Responses:

No data yet. The correct response is c.

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References and Notes: