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12 Cards in this Set

  • Front
  • Back
monocline
rocks dipping in only 1 direction
dome
fold which plunges radially in all directions, circular or somewhat elongated strucutre, black hills
basin
similar to dome but down warped, michigan and illinois
plunging fold
fodl with a dipping axis the axis plunges tot he ground
recumbant fold
compression is great, axial surface of a fold may be tilted close to teh horizontal as the rocks are doubled back upon themeselves, cores in mountains
overturn fold
imply that unequal compressive stresses or even a shearing stress cause the upper limb of the fold to overide the lower limb
joints and faults
fractures in rock
joint
fracture with no displacement
strike
compass direction of any horizontal line on inclined plane
dip
angle between a horizontal plane and the inclined plane
dip slip
movement is parallel to the dip pof the fault surface
normal
result from horizontal or tensional stress in brittle rocks