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Ch8 Deformation & Metamorphism

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