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Subsurface Geology (Structures (Faulted (Bends/Step Overs (Left stepping -…

- - - - Uniform dip
    - - Step fold
      - Blind thrust
    - - Anticline/Syncline
      - Dome/Basin
    - - Characteristics
        
        limbs - the 2 sides of a fold
        
        fold axis/hinge line - a line connecting pts of max curvature along the fold
        
        axial plane - an imaginary surface symmetrically dividing a fold
      - Nomenclature
        
        Symmetrical - axial plane vertical
        
        Assymetrical (inclined) - 1 limb dips steeper than other
        
        Overturned - 1 limb dips beyond vertical
        
        Recumbent - axial plane horizontal
  - - - Basin and range
      - Horst and graben
        
        Half graben (growth?) tilted process similar to growth
    - - 3 linkage systems
        
        Transform - plate boundary linked
        
        Oblique subduction - trench linked
        
        Rotational compression - indent linked
      - Classification
        
        Left lateral (sinistral)
        
        Right lateral (dextral)
    - - Left stepping - arrangement where a new fault segment steps left as viewed from the adjacent segment
      - Right stepping - the contrary
      - how does sinistral strike slip affect stepping?
      - how does sinistral strike slip affect bending?
      - Transtension
      - Transpression
    - - movement parallel to the dip of the fault surface
      - reverse (compression) fault
        
        compression classification
        
        High angle (reverse)
        
        Low angle (thrust)
      - normal (extension) faults
    - - Juxtaposition
      - Fault Gouge
    - - Projecting reservoirs
- - - - Limbs
      - Hinge line
      - Axial plane
    - - Symmetrical - vertical axial plane
      - Inclined - one limb steeper
      - Overturned - one limb past vertical
      - Recumbent - horizontal axial plane
      - Plunging
        
        Dome/Basin - plunging on all sides
  - - - Reverse
      - Thrust
      - Normal Faults
    - - Transform
      - Oblique
      - Rotational
    - - Clay Smear/Shale Gouge
      - Displacement/Juxtaposition
        
        Allan Diagram to map