Earth Science<br />11.1 Rock Deformation<br />
Stress<br />The force per unit area acting on a solid.<br />
Strain<br />The change in shape or volume of a body of rock as a result of stress.<br />
Anticline<br />Formed by the upfolding, or arching, of rock layers.<br />
Synclines<br />Downfolds, or troughs, found in association with anticlines<br />
Monoclines<br />Large, step-like folds in otherwise horizontal sedimentary strata<br />
Normal fault<br />Occurs when the hanging wall block moves relative to the footwall block<br />
Reverse fault<br />A fault in which the hanging wall block moves up relative to the footwall block.<br />
Thrust fault<br />Reverse faults with dips of less than 45 degrees<br />
Strike-slip fault<br />Faults in which the movement is parallel to the trend or strike, of the fault surface<br />
What You Should Know…<br />The factors that influence the strength of a rock and how it will deform include temperature, c...
More 411 On Deformation<br />Forces that are unable to deform rock when first applied may cause rock to flow if the force ...
Even More Information<br />The three main types of folds are anticlines, synclines, and monoclines.<br />The major types o...
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Ppt 11.1 earth

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Ppt 11.1 earth

  1. 1. Earth Science<br />11.1 Rock Deformation<br />
  2. 2. Stress<br />The force per unit area acting on a solid.<br />
  3. 3. Strain<br />The change in shape or volume of a body of rock as a result of stress.<br />
  4. 4. Anticline<br />Formed by the upfolding, or arching, of rock layers.<br />
  5. 5. Synclines<br />Downfolds, or troughs, found in association with anticlines<br />
  6. 6. Monoclines<br />Large, step-like folds in otherwise horizontal sedimentary strata<br />
  7. 7. Normal fault<br />Occurs when the hanging wall block moves relative to the footwall block<br />
  8. 8. Reverse fault<br />A fault in which the hanging wall block moves up relative to the footwall block.<br />
  9. 9. Thrust fault<br />Reverse faults with dips of less than 45 degrees<br />
  10. 10. Strike-slip fault<br />Faults in which the movement is parallel to the trend or strike, of the fault surface<br />
  11. 11. What You Should Know…<br />The factors that influence the strength of a rock and how it will deform include temperature, confining pressure, rock type, and time.<br />Rocks deform permanently in two ways: brittle deformation and ductile formation.<br />
  12. 12. More 411 On Deformation<br />Forces that are unable to deform rock when first applied may cause rock to flow if the force is maintained over a long period of time.<br />The three types of stresses that rocks commonly undergo are tensional stress, compressional stress, and shear stress.<br />
  13. 13. Even More Information<br />The three main types of folds are anticlines, synclines, and monoclines.<br />The major types of faults are normal faults, reverse faults, thrust faults, and strike-slip faults.<br />
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