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