When do rocks succumb to ductile deformation?
A)at shallow depth, at low confining pressure, and low temperature
B)at great depth under active mountain belts with high confining pressure and low strain rates or prolonged strain
C)in fault zones with intermittent high strain rates
D)on the rims of meteorite impact craters

Question

Quizplus · Accepted Answer

Rocks succumb to ductile deformation at great depth under active mountain belts with high confining pressure and low strain rates or prolonged strain. This is because at great depth, high confining pressure prevents brittle fractures, and prolonged strain or low strain rates allow for plastic deformation over time.

When Do Rocks Succumb to Ductile Deformation