Podcast
Questions and Answers
What distinguishes an active fault from an inactive fault?
What distinguishes an active fault from an inactive fault?
- Active faults are located deeper within the Earth's crust.
- Active faults are characterized by horizontal displacement, while inactive faults are characterized by vertical displacement.
- Active faults have generated an earthquake within the last 10,000 years, while inactive faults have not. (correct)
- Active faults only experience strike-slip movement, while inactive faults only experience dip-slip movement.
In a normal fault, the hanging wall moves upward relative to the footwall due to compressional forces.
In a normal fault, the hanging wall moves upward relative to the footwall due to compressional forces.
False (B)
What type of force is primarily responsible for the creation of a reverse fault?
What type of force is primarily responsible for the creation of a reverse fault?
Compressional forces
The term used to describe the steepness of a fault surface is known as ______.
The term used to describe the steepness of a fault surface is known as ______.
Match the fault types with their primary direction of movement:
Match the fault types with their primary direction of movement:
Which type of fault is characterized by horizontal movement where the opposite side appears to have moved to the left?
Which type of fault is characterized by horizontal movement where the opposite side appears to have moved to the left?
Strike is measured counter-clockwise from north.
Strike is measured counter-clockwise from north.
Besides dip and strike, what are terms of rock that are above and below the fault plane?
Besides dip and strike, what are terms of rock that are above and below the fault plane?
Movement along a fault is vertical, that is up or down, is know as ______ fault
Movement along a fault is vertical, that is up or down, is know as ______ fault
Which statement best describes an oblique-slip fault?
Which statement best describes an oblique-slip fault?
Flashcards
Fault
Fault
A fracture in the Earth's crust where movement has occurred.
Active Fault
Active Fault
A fault that has produced an earthquake within the last 10,000 years and may continue to generate earthquakes.
Inactive Fault
Inactive Fault
A fault showing no signs of earthquake activity in the last 10,000 years, but could potentially generate earthquakes in the future.
Hanging Wall
Hanging Wall
Signup and view all the flashcards
Footwall
Footwall
Signup and view all the flashcards
Dip
Dip
Signup and view all the flashcards
Strike
Strike
Signup and view all the flashcards
Dip-Slip Fault
Dip-Slip Fault
Signup and view all the flashcards
Normal Fault
Normal Fault
Signup and view all the flashcards
Strike-Slip Fault
Strike-Slip Fault
Signup and view all the flashcards
Study Notes
- Faults are fractures in the Earth's crust.
Active Faults
- Active faults have generated earthquakes within the last 10,000 years.
- These faults might still generate earthquakes.
Inactive Faults
- Inactive faults show no signs of earthquake activity in the last 10,000 years.
- These faults could still possibly generate earthquakes in the future.
Fault Components
- The hanging wall refers to the rock above the fault plane.
- The footwall refers to the rock below the fault plane.
- Dip describes the steepness of the fault surface.
- Strike is measured clockwise from north.
Dip-Slip Faults
- Movement is vertical along the dip of the fault plane.
- Compressional or tensional forces cause them.
Normal Faults
- The hanging wall moves down relative to the footwall.
- Due to tensional forces.
Reverse Faults
- The hanging wall moves up relative to the footwall.
- Compressional forces cause them.
Strike-Slip Faults
- Movement is horizontal along the strike of the fault plane.
- Shear forces cause them.
Left-Lateral Faults
- The opposite side appears to have moved to the left.
Right-Lateral Faults
- The opposite side appears to have moved to the right.
Oblique-Slip Faults
- These are a combination of dip-slip and strike-slip faults.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
