How To Determine Hanging Wall And Footwall On Map

An arcuate cliff called the headwall.

How to determine hanging wall and footwall on map.

More common are headwalls angular in map view due to irregularities in height along. The hanging wall occurs above the fault plane and the footwall occurs below it. The main components of a fault are 1 the fault plane 2 the fault trace 3 the hanging wall and 4 the footwall. This terminology comes from mining.

The block below your feet is the footwall and the one upon which you would hang your miner s lamp is the hanging wall. It is that simple. The two sides of a non vertical fault are known as the hanging wall and footwall. Other articles where hanging wall is discussed.

This situation however is generally found only in cirques cut into flat plateaus. Block below is called the footwall. If the hanging wall drops relative to the footwall you have a normal fault. It is a flat surface that may be vertical or sloping.

In an ideal cirque the headwall is semicircular in plan view. Dip slip movement occurs when the hanging wall moved predominantly up or down relative to the footwall. Cirques tarns u shaped valleys arêtes and horns. Draw a normal and reverse fault label the hanging wall and footwall for each also show how they move for each fault.

We distinguish between dip slip and strike slip hanging wall movements. The fault plane is where the action is. If the motion was down the fault is called a normal fault if the movement was up the. The fault strike is the direction of the line of intersection between the fault plane and earth s surface.

Hanging wall and footwall. In a fault plane that dips 45 degrees the overlying rock unit is the hanging wall and the underlying rock unit is the footwall. Hanging wall movement determines the geometric classification of faulting. The line it makes on the earth s surface is the fault trace.

In normal faulting the hanging wall moves downwards in relation to the footwall. When working a tabular ore body the miner stood with the footwall under his feet and with the hanging wall above him. A type of fault in which the hanging wall moves down relative to the footwall and the fault surface dips steeply commonly from 50 o to 90 o groups of normal faults can produce horst and graben topography or a series of relatively high and low standing fault blocks as seen in areas where the crust is rifting or being pulled apart by plate tectonic activity.