Deformation

Deformation

1. Normal Fault = Hang wall down, foot wall up

   • Reverse Fault = Hang wall up, foot wall down 45*
     • Compressive force... convergent plate
       • SMOKY MOUNTAINS/ HIMALAYAS
     • DIP SLIP FAULT = normal, reverse, thrust
       • STRIKE SLIP = Right and left lateral
   • Thrust Fault = Hang wall up, foot wall down 15*
     • Compressive force... convergent plate
     • SMOKY MOUNTAINS/HIMALAYAS
       • KEYSTONE FAULT... older rocks on top of newer
   • Transform Fault = side to side
     • shearing force
     • SAN ANDREAS FAULT
       • <- right lateral strike slip fault
   • tensional force... divergent plate
     • MIDATLANTIC RIDGE

2. STRIKE

   • compass direction of a rock as it intersects horizontal surface

3. DIP

   • amount of tilting of the layer.. measured at right angles

4. Brittle = rock breaks

   • high up in crust
   • Ductile = rock bends/folds
     • deep in earth

5. FAULT

   • joint between broken rock// rocks move on both sides

6. JOINT

   • crack where nothing moves

7. ANTICLINE

   • SYNCLINE
     • young rocks on top
   • old rocks on outside
     • Symmetrical Fold = bent the same on each side
       • asymmetrical fold = not same

8. Geologic Map = represents rocks exposed at earth's surface

   • Outcrop = the most basic natural source of a rock (the first of them)
   • scale of 1:24,000
   • geologic cross section = diagram of what it would look like as vertical slices

Imagens e arquivos do mapa