GL 107 Earth Systems Science

K. Hannula

Discussion questions for 10/8/07

1.  What is the difference between ductile and brittle deformation?  At what conditions do rocks deform in a brittle manner?

2.  Define the following terms:

• anticline

• syncline

• monocline

• dome

• basin

3.  (Specific answer is not in book) Durango lies on the northern edge of the San Juan Basin.  What does that mean about the shape of the local rock layers?

4.  Define the following terms:

• dip-slip fault

• normal fault

• reverse or thrust fault

• strike-slip fault

• joint

5.  In what tectonic setting do normal faults typically form?

6.  In what tectonic setting do thrust faults typically form?

7.  How do mountains form at the following types of plate boundaries?

• Andean-type mountains

• continental collision zones

• Laramide orogeny/Rocky Mountains