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What is hanging wall and footwall in mining?
mineral deposits ore body is called the hanging wall, and rock located below the ore body is called the footwall.
What is a hanging wall mining?
noun. Mining. the underside of the wall rock overlying a vein or bed of ore.
What is mining footwall?
Mining. the top of the rock stratum underlying a vein or bed of ore. a mass of rock lying beneath a fault plane.
Why are mining terms eg footwall hanging wall used to help determine the type of fault?
The terms “hanging wall” and “footwall” are old mining terms. The hanging wall block was the block of rock where miners would hang their lanterns; the footwall block was where miners would walk. It is easy to determine which side of the fault is the hanging wall if you imagine a miner standing on the fault plane.
What is footwall fault?
Footwall meaning The underlying block of a fault having an inclined fault plane. noun. 1. The block of rock lying under an inclined geologic fault plane. (geology) The section of rock that extends below a diagonal fault line (the corresponding upper section being the hanging wall).
Who invented the terms hanging wall and footwall?
Faults have two sides: the hanging wall and the footwall. These terms were coined by miners because you can stand with your feet on the footwall and hang a lamp on the hanging wall on the opposite side.
In which type of fault does the hanging wall move down relative to the footwall?
reverse fault
If the foot wall moves down relative to the hanging wall, then it is a reverse fault. 2. When the motion on a fault is more horizontal, then it is called a strike-slip or lateral fault.
What is footwall in geography?
(ˈfʊtˌwɔːl) n. (Geological Science) the rocks on the lower side of an inclined fault plane or mineral vein. Compare hanging wall.
When the hanging wall moves up relative to the footwall?
Where the crust is being compressed, reverse faulting occurs, in which the hanging-wall block moves up and over the footwall block – reverse slip on a gently inclined plane is referred to as thrust faulting. 3.
What happens to the hanging wall and footwall In a reverse fault?
If the hanging wall rises relative to the footwall, you have a reverse fault. Reverse faults occur in areas undergoing compression (squishing). If you imagine undoing the motion of a reverse fault, you will undo the compression and thus lengthen the horizontal distance between two points on either side of the fault.
Is there a hanging wall and foot wall block in a strike-slip fault?
Strike-slip faults are vertical and thus do not have hanging walls or footwalls. If the hanging wall drops relative to the footwall, you have a normal fault. Normal faults occur in areas undergoing extension (stretching).
How does the hanging wall move relative to the footwall In a reverse fault?
In a reverse fault, the hanging wall moves down and the footwall moves up.