What is meant by the rolling hinge mechanism during extensional detachment faulting?
What will be an ideal response?
Answer: The rolling hinge model involves updoming of the central part of the main listric fault and movement of the “dome” or hinge in the direction of the break-away fault as this fault also moves by hanging-wall collapse. This is illustrated in Figure 17.8.
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What is the likely cause of the 98° tilt of Uranus's axis?
A. a collision with a large body early in the solar system's evolution B. Neptune's effect on Uranus' gravitational field C. distorted magnetic poles due to its large molten iron core D. fluid wave dynamics due to its large molten core
Toxins on microfine pieces of plastic debris have been suggested as a possible reason for the decline in phytoplankton
over the past 25 years. a. True b. False
An erosional coast that has little tidal variation:a
can erode quickly because wave action is centralized. b. can erode slowly because there are no dramatic changes in tide. c. can erode quickly because it is inundated with large waves. d. can erode slowly because it becomes protected from large tidal variations.
The pace of suburbanization reached its peak in the United States in the ________.
A. 1970s B. 1960s C. 1990s D. 1950s E. 1980s