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Questions and Answers
What is a fault trace?
What is a fault trace?
- A cluster of parallel faults
- The zone of crushed rock along a single fault
- A place where the fault can be seen or mapped on the surface (correct)
- The line commonly plotted on geologic maps to represent a fault
What causes most earthquakes?
What causes most earthquakes?
- Friction and rigidity of rocks
- Energy release associated with rapid movement on active faults (correct)
- Prolonged motion along closely spaced faults
- Aseismic creep
What are asperities along a fault plane?
What are asperities along a fault plane?
- Regions of higher friction where movement becomes locked (correct)
- Places where the fault can be seen or mapped on the surface
- Zones of crushed rock along the fault
- The line commonly plotted on geologic maps to represent a fault
What is a fault zone?
What is a fault zone?
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What represents the fracture surface of a fault?
What represents the fracture surface of a fault?
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What is the term used to describe the average rate of seismic energy release per unit volume at a particular location in the Earth?
What is the term used to describe the average rate of seismic energy release per unit volume at a particular location in the Earth?
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Which event, other than the rupture of geological faults, can also cause earthquakes?
Which event, other than the rupture of geological faults, can also cause earthquakes?
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What is the point of initial rupture in an earthquake called?
What is the point of initial rupture in an earthquake called?
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What term is used to describe non-earthquake seismic rumbling at the Earth's surface?
What term is used to describe non-earthquake seismic rumbling at the Earth's surface?
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What can occur when the epicenter of a large earthquake is located offshore?
What can occur when the epicenter of a large earthquake is located offshore?
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