Experiment 1

 Riedel Shears in a transform plate boundary (right-lateral)

(go to Discussion of Experiment 1)

Riedel Shears initially develop in strike slip faults and are formed by the collaboration of synthetic, antithetic, and throughcutting faults.  The dominant fault is the R shears which form first and are linked by the secondary RI shears.  As displacement continues, the R and RI segments will join, and then a throughcutting fault (P) will form (Faults). This model represents a young fault forming Riedel Shears which is common in areas with transform motion.  This propogation of shearing could lead to block rotation if a rigid block is present within the compressional sector.

          Materials/Set up:
  • Flubber 
  • Wet Sand
           Apparatus: (click for larger view)                                    Time Lapse
model 1
                    10 (s)                                                        18 (s)                                                          23 (s)                                                   28 (s)
                                     riedel diagram                Riedel Shears
                                             28 (s)  (image rotated 90 degrees)                              http://www.uwsp.edu/geo/faculty/hefferan/geol320/faults12.jpg
                                                                                                  Video : Right Lateral Strike-Slip: Riedel Shearing