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Geology: Faults and Plate Tectonics

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Questions and Answers

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?

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?

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?

A cluster of parallel faults Signup and view all the answers

What represents the fracture surface of a fault?

Fault plane Signup and view all the answers

What is the term used to describe the average rate of seismic energy release per unit volume at a particular location in the Earth?

Seismicity Signup and view all the answers

Which event, other than the rupture of geological faults, can also cause earthquakes?

Volcanic activity Signup and view all the answers

What is the point of initial rupture in an earthquake called?

Hypocenter Signup and view all the answers

What term is used to describe non-earthquake seismic rumbling at the Earth's surface?

Tremor Signup and view all the answers

What can occur when the epicenter of a large earthquake is located offshore?

Tsunami Signup and view all the answers