How To Determine Hanging Wall And Footwall On Map

Dip slip movement occurs when the hanging wall moved predominantly up or down relative to the 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. We distinguish between dip slip and strike slip hanging wall movements.

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Hanging wall and footwall.

How to determine hanging wall and footwall on map.

If the motion was down the fault is called a normal fault if the movement was up the. In normal faulting the hanging wall moves downwards in relation to the footwall. Hanging wall movement determines the geometric classification of faulting. The two sides of a non vertical fault are known as the hanging wall and footwall.

This situation however is generally found only in cirques cut into flat plateaus. The hanging wall occurs above the fault plane and the footwall occurs below it. Strike slip faults are vertical and thus do not have hanging walls or footwalls. The fault plane is where the action is.

Block below is called the footwall. The block below your feet is the footwall and the one upon which you would hang your miner s lamp is the hanging wall. The fault strike is the direction of the line of intersection between the fault plane and earth s surface. The dip of a fault plane is its angle of inclination measured from the horizontal.

Cirques tarns u shaped valleys arêtes and horns. 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. In an ideal cirque the headwall is semicircular in plan view. Draw a normal and reverse fault label the hanging wall and footwall for each also show how they move for each fault.

It is a flat surface that may be vertical or sloping. If the hanging wall drops relative to the footwall you have a normal fault. More common are headwalls angular in map view due to irregularities in height along. This terminology comes from mining.

The main components of a fault are 1 the fault plane 2 the fault trace 3 the hanging wall and 4 the footwall. The line it makes on the earth s surface is the fault trace. Other articles where hanging wall is discussed. An arcuate cliff called the headwall.

The hanging wall is above the footwall. It is that simple. When working a tabular ore body the miner stood with the footwall under his feet and with the hanging wall above him.