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Deforming the Earths Crust

Deforming the Earths Crust. Chapter 4 Section4. Stress Deformation Compression Tension Folding . The amount of force per unit are on a given material Process by which the shape of a rock changes because of stress Stress that occurs when an object is squeezed (convergent(

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Deforming the Earths Crust

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  1. Deforming the Earths Crust Chapter 4 Section4

  2. Stress • Deformation • Compression • Tension • Folding • The amount of force per unit are on a given material • Process by which the shape of a rock changes because of stress • Stress that occurs when an object is squeezed (convergent( • Stretch an object( divergent) • Bending layers

  3. Types of Folds • Anticline • Syncline • Monocline • Upward arching folds • Downward trough like folds • Both ends of the folds are horizontal

  4. Faulting • Fault • Fault Block • Foot wall • Hanging wall • Normal Fault • Reverse fault • A break in a body of rock along which one block slides relative to another. • Block of crust on each side of the fault. • Draw images

  5. Plate tectonics and Mountain Building • Folded Mountain • Fault Block Mountain • Volcanic Mountain • Rock layers are squeezed together and pushed upwards • Tension causes large blocks of earths crust to drop down • Rock that melts in subduction zones forms magma and which rises to earths surface and erupts

  6. Uplift and Subsidence • Uplift • Subsidence • Rebound • Rift zone • Rising of earths crust to higher elevations • The sinking of regions of earths crust to lower elevations • Slowly springs back to a previous elevation • Deep cracks that forms between 2 tectonic plates that are pulling away from each other

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