# What type of fault motion is represented by this beach ball?

## What type of fault motion is represented by this beach ball?

Strike‐slip faults The beach ball pattern shows four equal quadrants – two areas of compressions (shaded area) and two areas of dilatations (white areas). The example shown at the right is a right lateral strike‐slip fault – looking across the fault the rock on the other side appears to move to the right.

What is beach ball diagram?

A focal mechanism, or “beachball”, is a graphic symbol that indicates the type of slip that occurs during an earthquake: strike-slip, normal, thrust (reverse), or some combination. It also shows the orientation of the fault that slipped.

What is a right lateral strike slip fault?

Strike-slip faults are vertical (or nearly vertical) fractures where the blocks have mostly moved horizontally. If the block opposite an observer looking across the fault moves to the right, the slip style is termed right lateral; if the block moves to the left, the motion is termed left lateral.

### What is a strike-slip fault?

What is a slip fault?

strike-slip fault, also called transcurrent fault, wrench fault, or lateral fault, in geology, a fracture in the rocks of Earth’s crust in which the rock masses slip past one another parallel to the strike, the intersection of a rock surface with the surface or another horizontal plane.

How can you tell if a strike-slip fault is right or left lateral?

## What is right lateral strike-slip?

If you were to stand on the fault and look along its length, this is a type of strike-slip fault where the right block moves toward you and the left block moves away. See also left-lateral.

What is the difference between a left and a right lateral strike-slip fault?

What are two types of dip-slip fault?

There are two types of strike-slip and two types of dip-slip fault. The two types of strike- slip fault are right-lateral (or dextral) and left-lateral (or sinistral) while the two types of dip- slip fault are normal and reverse (or thrust) (Figure 7).

### What does a right lateral strike-slip look like?

If you were to stand on the fault and look along its length, this is a type of strike-slip fault where the right block moves toward you and the left block moves away.

How would you recognize a left lateral strike-slip fault?

Left-lateral fault strike slip fault with little or no friction along fault contact. There is no deformation of the rock adjacent to contact. If the block opposite an observer looking across the fault moves to the left, the motion is termed left lateral.