# Often asked: A Fault In Which The Hanging Wall Moves Down Relative To The Footwall Is A _____.?

## Which type of fault is formed when the hanging wall moves down relative to the footwall in response to tensional stress?

Normal Faults

If the hanging wall moves down relative to the footwall, the fault is a normal fault. Normal faults are caused by tensional stress, or stress that pulls rocks apart.. This small fault is a normal fault because the hanging wall has moved down relative to the footwall.

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## What type of fault involves the hanging wall moving down and the footwall moving up as the crust moves towards each other?

A reverse fault is the opposite of a normal fault—the hanging wall moves up relative to the footwall. Reverse faults indicate compressive shortening of the crust. The dip of a reverse fault is relatively steep, greater than 45°.

## What type of fault is characterized by the hanging Walling moving upward relative to the footwall opposite of the way that is naturally occurring by gravity?

Reverse faults, caused by compressional forces, are when the hanging wall moves up relative to the footwall. A thrust fault is a reverse fault where the fault plane has a low dip angle (generally less than 45 degrees).

## Which fault will see the hanging wall move down relative to the footwall quizlet?

Which fault will see the hanging wall move down relative to the footwall? are exactly the opposite of normal faults. If the hanging wall rises relative to the footwall, you have a reverse fault.

## What are the three different types of faults?

Different types of faults include: normal (extensional) faults; reverse or thrust (compressional) faults; and strike-slip (shearing) faults.

## Which conditions can cause folding?

Changes in shape and volume occur when stress and strain causes rock to buckle and fracture or crumple into folds. A fold can be defined as a bend in rock that is the response to compressional forces. Folds are most visible in rocks that contain layering.

## What do you call the block that moves up relative to the other?

A fault is a fracture or zone of fractures between two blocks of rock. Faults allow the blocks to move relative to each other. This movement may occur rapidly, in the form of an earthquake – or may occur slowly, in the form of creep.

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## What is the most dangerous type of fault?

Reverse faults, particularly those along convergent plate boundaries are associated with the most powerful earthquakes, megathrust earthquakes, including almost all of those of magnitude 8 or more. Strike-slip faults, particularly continental transforms, can produce major earthquakes up to about magnitude 8.

## What is the difference between footwall and hanging wall?

The FOOT WALL BLOCK is the block which would be under the feet of a person standing in a tunnel on the fault plane. The HANGING WALL BLOCK would then be hanging overhead. The UPTHROWN SIDE of the fault is the side on which the movement has been up relative to the other side.

## What causes a hanging wall to be pushed upwards?

The hanging wall, the block of rock positioned above the plane, pushes down across the footwall, which is the block of rock below the plane. In these faults, which are also caused by compression, the rock of the hanging wall is actually pushed up on top of the footwall at a convergent plate boundary.

## What type of fault is formed?

Reverse faults often form along convergent plate boundaries. Strike-slip Faults: Sometimes referred to as a lateral fault, this type forms when the blocks of rock on either side of a vertical (or nearly vertical) fracture move past each other.

## What is the difference between a reverse fault and a thrust fault?

Reverse faults are steeply dipping (more near vertical), thrust faults are closer to horizontal. 45° is a commonly cited cut-off between the two types of faults. A more important difference is that thrust faults allow whole thick slivers of continental crust to override each other.

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## When a fault is expressed at the surface it is called a quizlet?

When a fault is expressed at the surface, it is called a. fault scarp. The name of the site where slippage begins and earthquake waves radiate outward is called the. hypocenter.

## What is the significance of an unconformity?

UNCONFORMITIES ARE THE RECORD OF MAJOR EPISODES OF UPLIFT, EROSION AND SUBSIDENCE DURING THE GROWTH OF THE CONTINENTS AS EARTH HISTORY PROGRESSED. THEY ARE THEREFORE IMPORTANT EVIDENCE FOR CRUSTAL MOBILITY THROUGHOUT EARTH HISTORY.

## Which type of force is responsible for strike-slip fault formation?

Figure 10.22c: Shear forces typically produce strikeslip faults where one block slips horizontally past the another. In other words, slippage is parallel to the strike of the fault. 7. Figure 10.22b: Compressional forces typically push the hanging wall upward relative to the footwall, producing a reverse fault.