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Ch8 Deformation & Metamorphism

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Across
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When rocks are squeezed, sheared, or broken
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When a stress pushes on a rock
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A fold that only has one dipping segment, nearly flat layers
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Part of the fold that is most sharply curved
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When rocks flow as a weak solid at deeper levels where P & T are greater
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Formed when rocks cool and contract in polygon-shaped columns.
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When rocks deform by fracture at shallow levels
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Inclined fault surface expressed in degrees from horizontal
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Rock layers warp upward in the shape of an "A"
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When rocks along a fault move with a side-to-side motion
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Amount of force divided by area upon which force is applied
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Hanging wall moves down relative to the footwall
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Hanging wall moves up relative to the footwall
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When a stress is directed outward and pulls on a rock
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Downdropped block or a resulting valley
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Layers of rock that may be bent in gentle arcs or squeezed tightly into sharp angles caused by deformation
Down
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Push or pull that causes change in motion
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Fracture where rocks have slipped past one another
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Rocks fold down in the shape of a "V" or "U"
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Planar or less curved parts of a fold
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Block that is uplifted relative to blocks on either side (mountains)
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Rock behaving as a rigid object or changing shape as it moves
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Force on a rock that is equal in all directions
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Force on a rock that is not equal in all directions
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Any planar metamorphic fabric that forms because of differential stress
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Simple cracks that represent where a rock has pulled apart
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Block below the fault
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Stresses on the edges of a block are applied in opposite directions
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Direction and amount that the fold points down