《构造地质学》（英文版）Exam 3

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1. Place all books and notes on the floor. 2. Read each question carefully, then read it again. 3. ThinkThinkThinkThinkThink.

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Geology 3063 Exam 3 December 3, 1999 Instructions. 1. Place all books and notes on the floor. 2. Read each question carefully, then read it again. 3. ThinkThinkThinkThinkThink. 4. Organize your thoughts and outline your answer mentally before writing. If you are not certain, put your ideas down on the back of the page before proceeding. 5. Answer the questions in the space provided You may use the backs of the pages to outline and doodle. 6. You have 60 minutes. All exams must be turned in by 10: 00am. You are responsible for pacing yourself. 7. Proceed when ready. This too shall pass

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E Name 20 points 1. Assume that you have a rock volume that is composed of interleyered limestone nd dolomite. All of the layers are 1.0 meter thick, and the dolomite layers occur on a 5 meter spacing. Describe how this rock volume would behave, what deforma- tion mechanisms would be active and the resultant structures and rock fabrics that would develop under the following conditions. Assume that water is present, and that the system is subject to pure shear a)The rock volume is subjected to an imposed strain rate of 1 x 10-4 at a temperature of 25 C and at a depth of 1.5km b)The rock volume is subjected to an imposed strain rate of 1x10-8 at a temperature of 300C and at a depth of 10km December 3. 1999

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E Name 20 points 2. Compare and contrast the deformation history and conditions of the two samples at the front of the room 3 December 3. 1999

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E Name 20 points 3. Explain, from the crystalline viewpoint, what is happening within a material that experiences the following o E curve. You may want to label and describe important points"and"regions"along the curve, and include a description of their significance in your answer December 3. 1999

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E Name 20 points 4. Compare and contrast the three primary failure criteria, discussing their basis, and use in structural geology page 5 December 3. 1999

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E ane 20 points 5. What type of deformation does the following deformation tensor describe? page 6 December 3. 1999

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