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Contents of 6.3 What is the role of pressure in metamorphism?

6.3 What is the role of pressure in metamorphism?

• Pressure is related to stress
• Magnitude of force divided by the area the force is applied to
• Normal stress - perpendicular to the surface. Results in change in volume and often shape.
• Shear stress - force parallel to the surface. Results in change of shape, but not volume.
• Strain - the deformation of a rock as a result of stress