Terms to describe faults Movement on Faults and terminology Foot wall block below faul) above Strike Slip= AC Dip slip CB Throw AE Fig.11.19 Heave= ED Net Slip AB true horizontal Kinds of Faults Normal Fault hrust Fault . Movement on hanging wall is .Fault plane very low angle Result of extensio .Common Fault type in Foothills and Rockies Strike sp Fault Reverse Fault Movement or wall is up Plate Tectonic Settings and Topographic Features Plate Tectonic Settings and Topographic Features trike-Slip Faults or transform faults form long linear valleys usually indicated by streams or long lakes Usually in rift zones where the crust stretched Note"Drag"of beds along fault(what kind of deformation is this?) Fig.11.224 Fig. 11.19 Terms to describe faults Movement on Faults and terminology A B C E D Net Slip = AB Strike Slip = AC Dip Slip = CB Throw = AE true vertical Hanging wall (block above fault) Foot wall (block below fault) Heave = ED true horizontal Kinds of Faults Normal Fault ïMovement on hanging wall is down relative to footwall ïResult of extension Reverse Fault ïMovement on hanging wall is up relative to footwall ïResult of compression Strike- slip Fault Thrust Fault ïSpecial case of reverse fault ïFault plane very low angle ïCommon Fault type in Foothills and Rockies Plate Tectonic Settings and Topographic Features Strike-Slip Faults or transform faults form long linear valleys usually indicated by streams or long lakes Plate Tectonic Settings and Topographic Features Usually in rift zones where the crust stretched. Note ìDragî of beds along fault (what kind of deformation is this?) Normal Faults Fig. 11.22