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20 True/False questions

  1. A reverse fault is one in which ________.a low-angle, reverse fault

          

  2. The Great Rift Valley of East Africa is characterized by ________.mainly normal faulting as East Africa begins to fragment

          

  3. A transform fault is ________.a strike-slip fault that forms the boundary between tectonic plates

          

  4. The ________ in California is the boundary between the North American and Pacific plates.tensional stresses and normal-fault movements

          

  5. Which one of the following is consistent with deformation by folding?Horizontal distance is shortened perpendicular to fold axes.

          

  6. A syncline is ________.a fold in which the strata dip toward the axis

          

  7. A ________ fault has little or no vertical movements of the two blocks.Normal faults

          

  8. Which one of the following best describes the geology of the Black Hills region in South Dakota?Horizontal distance is shortened perpendicular to fold axes.

          

  9. Normal and reverse faults are characterized mainly by ________.a hanging wall block that has moved down between two normal faults

          

  10. A graben is characterized by ________.a strike-slip fault that forms the boundary between tectonic plates

          

  11. ________ are the products of horizontally directed, tensional stresses.Normal faults

          

  12. Which one of the following is true for anticlines but not for synclines?Horizontal distance is shortened perpendicular to fold axes.

          

  13. A thrust fault is best described as ________.the hanging wall block has moved up relative to the footwall block along an inclined fault

          

  14. In a normal fault ________.the crust is shortened and thickened

          

  15. In thrust faulting, ________.the hanging wall block above an inclined fault plane moves downward relative to the other block

          

  16. A deeply eroded, structural basin would exhibit ________.strata oriented in roughly circular, outcrop patterns

          

  17. The mountains and valleys of the Basin and Range Province of the western United States formed in response to ________.mainly normal faulting as East Africa begins to fragment

          

  18. A ________ is a prominent ridge formed by differential erosion of tilted, alternating hard and soft strata.hogback

          

  19. A horst is ________.a fold in which the strata dip toward the axis

          

  20. The Michigan geologic map shows older, Paleozoic strata (in roughly circular patterns) surrounding a core area of Pennsylvanian rocks. What is this structure?Horizontal distance is shortened perpendicular to fold axes.