Strain,the amount of deformation undergone by an object,is expressed in rocks by

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Strain in rocks is expressed by folding (when rock layers bend without breaking) or faulting (when there is a fracture in the rock and movement occurs along the fracture). Metamorphism refers to changes in the mineralogical, chemical, and physical properties of a rock due to heat and pressure, and is not necessarily related to strain. Breaking and removal, bending, and resistance do not directly express strain in rocks.

Strain,the Amount of Deformation Undergone by an Object,is Expressed in Rocks