Strain

=Strain=

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Strain is any change in the shape or volume of the rock that results from stress. Usually when a lot of stress is applied to a rock, the rock it may deform. There are two types of strain brittle and ductile. Materials that response to stress by breaking or fracturing is brittle strain. Materials that respond to stress by bending, folding, or deforming without breaking is ductile strain. These two types of strain are permanent strain. The composition of the rock highly affects whether if the rock is brittle or ductile. Also, the temperature and pressure effect how the rock deforms. For example if the temperature and the pressure are low, then the rock will deform in a brittle way. If the temperature and the pressure are high, then most likely the rock will deform in a ductile way. The amount, type of strain and the rate at which stress is applied to rock. The greater the stress is applied on the rock, mostly likely to undergo in a brittle way. The quicker greater stress is applied to the rock, it will respond in a brittle way.=====