1. Nonconformity
2. Angular Unconformity
3. Disconformity
4. Paraconformity

Structural Geology

1. Forces at work
   1. Stress
      1. Compressional
      2. Tensional
      3. Shear
   2. Strain
      1. Elastic
      2. Plastic - Folds
      3. Brittle - Faults
2. Attitude of Beds
   1. Strike
   2. Dip
      1. Angle of Dip
      2. Direction of Dip
   3. Various attitudes of beds
      1. Horizontal beds
      2. Vertical beds
      3. Inclined beds
3. Folds
   1. Parts of folds
      1. limbs
      2. hinge line = axis
      3. axial plane = hinge plane
      4. plunge
   2. Types of folds (Self Quiz Link)
      1. Anticline
      2. Syncline
      3. Monocline
   3. Rules for folds - KNOW !!!!
      1. Anticline
         1. Age - oldest rocks at axis
         2. Dip - beds dip away from axis
         3. Plunge - fold plunges toward the closed end of the outcrop
      2. Syncline
         1. Age - youngest rocks at axis
         2. Dip - beds dip toward the axis
         3. Plunge - fold plunges toward the open end of the outcrop
   4. Complexity of Folds
      1. Structural Dome
      2. Structural Basin
      3. Degree of folding
         1. Symmetrical = open folds
         2. Asymmetrical
         3. overturned folds
         4. recumbent folds
4. Fractures
   1. Joints
      • Joint sets
   2. Faults - movement along a fracture
      1. Dip - slip faults
         1. Parts
            1. Footwall
            2. Hanging wall = Headwall
         2. Types of Dip - slip faults
            1. Normal Fault - headwall drops
               1. Horst
               2. Graben
               3. Rift
            2. Reverse Fault - headwall move up
               1. Thrust fault
               2. Klippe
      2. Strike - slip faults (Self Test Quiz)
         1. Left - Lateral strike - slip
         2. Right - Lateral strike - slip

Relationship of Dipping beds and Faulting