Chapter 9 struc

Chapter 9 struc - Geology 3443 Spring 2006 Chapter 9...

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Geology 3443 Spring 2006 Chapter 9 – Ductile Deformation Mechanisms Introduction 1. What are the three mechanisms considered in this chapter? Why is cataclastic flow considered ductile behavior rather then brittle? 2. What are the primary parameters that control which ductile mechanism operates in a rock? 3. What is homologous temperature? Why is it a better measurement for ductile mechanisms that normal temperature? Cataclastic Flow 4. Describe what happens to grains and minerals during cataclastic flow. If cataclastic flow occurs along a narrow zone, is it considered ductile? Why? Crystal Defects 5. What are point defects and how are they produced? 6. What are line defects and how are they produced? 7. How are edge dislocations different from screw dislocations? 8. How is a burgers vector determined? 9. How does the local stress field in a crystal lattice produced by an edge dislocation differ from that produced by a screw dislocation? 10. What is the effect of this stress field on nearby dislocations?
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Chapter 9 struc - Geology 3443 Spring 2006 Chapter 9...

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