Which one of the following statements regarding rock deformation and strength is correct?
a.) Rupture and plastic deformation occur when stresses 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 periods, very small, plastic deformations accumulate to produce large, permanent, elastic deformations.
Answer: a.) Rupture and plastic deformation occur when stresses exceed the elastic limit of a material.
You might also like to view...
Which particles of sediment are most likely to be transported as suspended load?
A) Small, low density particles B) Pebbles of average density C) Sand and gravel of relatively high density D) Dissolved ions in solution E) All of these are correct.
Which worm has a segmented body plan?
A) Platyhelminthes B) Nematodes C) Roundworms D) Polychaetes
Analyze the table below that shows USGS data for earthquake zones in Alaska and use it to answer this question. 
What is the trend when comparing slip rate to recurrence interval?
A. There is no obvious slip-rate, recurrence relationship. B. The larger the slip rate the smaller the recurrence interval. C. The larger the slip rate the larger the recurrence interval.
Which of the following karst flow-system types is most like a flow system in sand aquifers?
a. conduit b. diffuse c. mixed d. none of the above