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Vacancy

Vacancy. Interstitial Atom. Initial Shape. Final Shape. Strain Ellipse. Coble creep and pressure solution diffusion. Nebarro-Herring diffusion. Redistributed Material. Strain Ellipse. Coaxial Deformation. Fracture and Cataclasis. Dislocation Creep. Differential Stress.

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Vacancy

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  1. Vacancy Interstitial Atom

  2. Initial Shape Final Shape Strain Ellipse

  3. Coble creep and pressure solution diffusion Nebarro-Herring diffusion

  4. Redistributed Material Strain Ellipse Coaxial Deformation

  5. Fracture and Cataclasis Dislocation Creep Differential Stress Dissolution Creep and Mechanical Twinning Grain boundary diffusion creep Volume- diffusion Creep Temperature

  6. Rheology • Rheology - relationship between stress and strain • Elastic: Hooke’s Law (stress is proportional to strain) • Frictional: Byerlee’s Law • Viscous:

  7. Creep • Creep = slow viscous flow that occurs at differential stresses well below the rupture strength of the rock

  8. Non-linear viscous • edot = A s^n exp (-E*/RT), rearranged ass= ((edot)/A)1/n exp (-E*/RT)

  9. Calcite Dislocation glide Dislocation creep Coble Creep Pressure Solution Nebarro-Herring Creep Temperature

  10. Quartz Dissolution Glide Dissolution Creep Pressure Solution Nebarro-Herring Creep Temperature

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