10_Deformation_Mountain_Bldg[1]

10_Deformation_Mountain_Bldg[1] - Rock Deformation and...

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1 Rock Deformation and Mountain Building REVIEW: in which direction does metamorphism become more intense (higher grade)? N Stress = Force/Area (N/cm 2 ) Strain = resulting deformation If stress > rock internal strength, then Stress leads to Strain
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2 Fig. 11.09ab Stress = Force/Area (N/cm 2 ) W. W. Norton Elastic Strain? STRAIN Plastic Strain? Elastic Strain add stress release stress
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3 brittle ductile Plastic Strain
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4 Undeformed Rocks Tilted Beds
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5 Tilted Beds Strike (direction) Dip (angle)
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6 brittle ductile Plastic Strain Plastic Deformation brittle ductile Faults = Plastic Brittle Deformation
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7 footwal NORMAL FAULT footwall hanging wall Normal faults Normal faults
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8 Normal faults Fault scarp – Hebgen Lake earthquake, MT Reverse Faul Fault Reverse Fault Footwall Hanging wall
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9 Strike-slip fault (San Andreas, CA) Fractures and Joints Plastic Brittle Deformation
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11 Folding on a Satellite Scale 10 km monocline
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12
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13 cross-section what is this structure?
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10_Deformation_Mountain_Bldg[1] - Rock Deformation and...

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