Label Footwall Fault Hanging Wall

Identify the type of fault illustrated by each photo and describe the type of stress that produced it.

Label footwall fault hanging wall.

Sketch label and describe the concepts of dip strike hanging wall and footwall. Compression pushing together causes reverse faults. Be sure to include which type of stress creates each fault and the plate tectonic setting in which the fault is most likely to be found. Quite often the ore that a miner wants to get to is sitting right on that inclined plane the ore is in the fault.

If the hanging wall moved up relative to the footwall the movement was caused by compression. It separates rocks that were deep in the crust and ductile granite and gneiss from rocks of the upper crust sedimentary or volcanic that were brittle. On each photo draw arrows showing the relative movement on each side of the fault. The hanging wall moves up relative to the foot wall.

Where the fault plane is sloping as with normal and reverse faults the upper side is the hanging wall and the lower side is the footwall. Comments are turned off. Any fault plane can be completely described with two measurements. In a normal fault the hanging wall has moved down relative to the footwall.

A detachment fault is a particular kind of normal fault that generally dips at a low angle. Use four block diagrams to depict and describe the movement of a normal fault reverse fault left lateral strike slip fault and right lateral strike slip fault. The keweenaw fault is a thrust fault the name we give to prominent reverse faults. Formed by compressional stress rocks are pushed towards each other.

That s the hanging wall. It is a flat surface that may be vertical or sloping. Click the buttons along the bottom of the image to see another example of interpreting a fault. Mainly because the names hanging wall and footwall were named by miners who weren t trying to be cute.

When the fault plane is vertical there is no hanging wall or footwall. Its strike and its dip. Tension stretching causes normal faults. Most faults broken places are essentially inclined planes like this.

They are driven by significant tectonic events that affect large areas like continental collisions.