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Understanding Folds and Faults in Tectonic Plates

Learn about types of differential stress on rocks - ductile and brittle deformation. Explore examples and locations of different types of faults like normal, reverse, and strike-slip faults in various rock formations. Discover how rocks respond to stress and deform in different crust levels.

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Understanding Folds and Faults in Tectonic Plates

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  1. Folds and Faults

  2. Tectonic Plates

  3. Types of Differential Stress 1 2 3

  4. Ductile Deformation • Rock will flow in response to stress • Rock will change shape during flow • Example: Copper penny on train tracks

  5. Brittle Deformation • Rock will break in response to stress • Example: Glass objects, broken bones

  6. Deforming Marble Shallow Crust Brittle Deeper Crust Ductile M.S. Patterson, Australian National University

  7. Anticline Syncline

  8. Sinclair Dome, near Rawlings, WY

  9. Folds

  10. Types of Differential Stress

  11. Faults Kanab, Utah

  12. Fault

  13. Fault A break in a rock along which movement has occurred.

  14. Normal Fault:Rock above fault plane has moved down relative to rock below Reverse Fault:Rock above fault plane has moved up relative to rock below

  15. Normal Reverse Strike-Slip

  16. Normal Fault

  17. Rift Valley

  18. Reverse Fault

  19. Thrust Fault Devonian Limestone Jurassic Sandstone

  20. Thrust Fault

  21. San Andreas Fault Carrizo Plain, CA

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