Question

Which of the following factors promotes ductile deformation in rocks?

1) Low temperature
2) Low confining pressure
3) Low strain rate
4) High mineral hardness
5) Absence of water

Answer 1

Low temperature, low confining pressure, low strain rate, and absence of water can all promote ductile deformation in rocks.

Step-by-step explanation:

Low temperature, low confining pressure, low strain rate, and absence of water can all promote ductile deformation in rocks.

• Low temperature: At low temperatures, the rocks are less likely to undergo brittle fracture and are more likely to deform plastically.
• Low confining pressure: Low confining pressure allows the rocks to deform more easily without fracturing.
• Low strain rate: A low strain rate means that the rocks are being deformed slowly, allowing them to deform plastically rather than fracturing.
• Absence of water: The presence of water can weaken the rocks and make them more likely to fracture, so the absence of water can promote ductile deformation.