Here's a breakdown:
* Deformation: This term encompasses all changes in the form or volume of a rock, whether it's bending, stretching, shortening, breaking, or any combination of these.
* Types of Deformation:
* Elastic deformation: Temporary changes that are reversible. The rock returns to its original shape when the stress is removed.
* Ductile deformation: Permanent changes that involve bending or flowing.
* Brittle deformation: Permanent changes that involve fracturing or breaking.
The type of deformation that occurs depends on factors like the type of rock, the amount of stress applied, and the temperature and pressure conditions.
