Which One of the Following Statements Regarding Rock Deformation and Strength

question 20

Multiple Choice

Which one of the following statements regarding rock deformation and strength is correct?

• A) Rupture and plastic deformation occur when stresses and strain rates exceed the elastic limit of a material.
• B) Elastic deformation is accomplished through internal flow of material.
• C) Rocks undergo plastic deformation less readily as temperatures and pressures increase.
• D) When rocks are subjected to stress for long time spans, very small, plastic deformations accumulate to produce large, permanent, elastic deformations.

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