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7-4c pgs. 183-184 IN: List and describe the 3 types of rock folding. Put your Worksheet on the box.

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Presentation on theme: "7-4c pgs. 183-184 IN: List and describe the 3 types of rock folding. Put your Worksheet on the box."— Presentation transcript:

1 7-4c pgs. 183-184 IN: List and describe the 3 types of rock folding. Put your Worksheet on the box

2 http://ees.as.uky.edu/sites/default/files/elearning/module10swf.swf

3  Fault – a break in the Earth’s crust along which blocks of the crust slide relative to one another due to tectonic forces.

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5 NAMING FAULTS  When the ground breaks, sections are moving with respect to each other.  The ground above the fault = Hanging Wall.  The ground below the fault = Footwall.

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7  Normal Faults  Reverse Faults  Strike-Slip Faults

8  Tensional (pulling) stress  Allows the hanging wall to slide down

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10  Compressional (pushing) Stress  Causes the hanging wall to move up  Stress 

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13  Shearing (sliding) stress causes one block to slide past the other horizontally.  Two types – right and left lateral

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16  Stress is still compressional (pushing), but the fault lies at a low angle.  Now the hanging wall gets pushed up and over the footwall

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20  http://www.iris.edu/gifs/animations/faults.h tm http://www.iris.edu/gifs/animations/faults.h tm

21  Elasticity of the rock material  Ductile material – limestones and clays  Brittle material – sandstones and granites  Amount of stress  Speed that the stress is applied

22  OUT: If a fault occurs in an area where rock layers have been folded, which type of fault is it likely to be? Why?

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