Unconformities 03 04 by oMhJzr4

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									               Unconformity
 Break in the geologic record
 Evidenced by:
  – Erosion
  – Folding and/or faulting
  – Igneous intrusions or lava flows
            Nonconformity
 Unconformityin which strata of
 sedimentary rock rests on igneous or
 metamorphic rock layers.




           Igneous Rock
        Angular Unconformity
 Boundary   between horizontal and
  distorted (tilted or folded) strata.
 Deposition      Distortion Deposition
    Sedimentation
                             Angular
                           Unconformity
     Deformation         An angular
                         uncoformity marks a
                         significant time gap
                         in the geological
       Erosion
                         column.


Renewed Sedimentation
             Disconformity
 Boundary between layers of rock that
 have not been deposited continuously.

								
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