faults and folds

faults and folds

1. faults

   • compitant brittle rock that fractures easily
     • fault breccia are broken bit of angular rock from the forces that create the fault
   • brittle fracture with vertical and/or horizonatal displacement
   • types of fault
     • dip slip
       • normal fault
         • hanging wall drops
       • verse fault
     • strike slip
       • leads to a polished surface with scratches

2. folds

   • types of folds
     • sincline
     • anticline
     • isocline
       • limbs are so tight they are parralel
     • overfold
     • asemtrical folds(anticline or syncline
     • recumbent folds
     • Nappe
     • domes and basins
   • normally formed by compression acting horizontally
     • the axial plane of a fold is at right angles of axiel plane
     • hard brittle rock(compitant) may fold rather than fault is applied slowly
   • ussaly soft incompitant rock
   • tension jointsca occur in the compitant nock in the center of the folds as the compression leads to tension in the streched side of the folding bed

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