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Types of Faults and Folds

Types of Faults and Folds. Types of Faults and Folds. Faults: when rocks break due to force. Normal Fault Caused by tension (pulling apart) Reverse Fault Caused by compression (pushing together) Strike-Slip Fault Caused by shear (lateral) forces (sideways)

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Types of Faults and Folds

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  1. Types of Faults and Folds

  2. Types of Faults and Folds • Faults: when rocks break due to force. • Normal FaultCaused by tension (pulling apart) • Reverse FaultCaused by compression (pushing together) • Strike-Slip FaultCaused by shear (lateral) forces (sideways) • Folds: when rocks bend due to force. • AnticlineCaused by compressionFolded up like an "A" • Syncline Caused by compression Folded down like a "U" • Monocline • Caused by compression, a gently dipping bend.

  3. Stress and Strain • Stress is the applied force (The pushing and pulling on the rock layers). • Strain is the bending & twisting that happens to the rock also known as deformation.

  4. 3 Types of Stress • Compressional stress pushes matter (rock layers) together. • Tensional stress pulls matter (rock and dirt layers) apart. • Shear stress is rotational. The stress is parallel to a face of the material

  5. Normal Fault Before After Reverse Fault Before After Strike-SlipFault Before After

  6. Folds Anticline  Syncline  Monocline 

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