Question

Factors that favor ductile deformation styles over brittle deformation styles include:

a. higher temperature, lower pressure, faster deformation rate
b. lower temperature, lower pressure, slower deformation rate
c. higher temperature, higher pressure, slower deformation rate
d. lower temperature, higher pressure, slower deformation rate

Answer 1

Factors that favor ductile deformation styles over brittle deformation styles include higher temperature, lower pressure, and faster deformation rate.The correct option is option a .

Step-by-step explanation:

Factors that favor ductile deformation styles over brittle deformation styles include:

1. Higher temperature: When rocks are subjected to higher temperatures, they tend to behave in a more ductile manner. The increased temperature helps to soften the minerals and promotes the movement of dislocations, allowing the rocks to deform without fracturing easily.
2. Lower pressure: Lower pressure conditions also favor ductile deformation. In these conditions, the rocks have less resistance to deformation, making them more malleable and less likely to fracture.
3. Faster deformation rate: A faster deformation rate can favor ductile deformation styles because it allows the rocks to deform and adjust gradually without sudden stress concentrations that can lead to brittle behavior.

Therefore, option a. higher temperature, lower pressure, faster deformation rate favors ductile deformation styles over brittle deformation styles.