Question

The vertical displacement of seam in a normal fault is known as

• A. Throw
• B. Want
• C. Hade
• D. Inclination

Hint:

Remember the two main components of fault displacement:
- Throw is the vertical part (what you "throw" up or down).
- Heave is the horizontal part (what you "heave" sideways).

Answer 1

The Correct Option is A

Step 1: Understanding the Question:
The question asks for the geological term for the vertical component of displacement across a fault.

Step 2: Detailed Explanation:
In structural geology, the displacement of rock layers or a seam across a fault is described by several components:
-

Throw: This is the measure of the

vertical displacement of the fault.
It is the vertical distance between a point on one side of the fault and the corresponding point on the other side.
This directly matches the question's description.
-

Heave: This is the measure of the

horizontal displacement of the fault.
-

Hade: This is the angle that the fault plane makes with the vertical.
It is the complement of the dip angle (Hade = 90\(^{\circ}\) - Dip).
-

Want: This is a mining term for a barren area where the coal seam is missing, which could be caused by a fault.
-

Inclination: This is a general term for a slope or angle, often used for the dip of strata.

Step 3: Final Answer:
The vertical displacement of a seam in a normal fault is known as the throw.
This corresponds to option (A).