Dip-Slip Faults. Dip-slip faults are so named because the dominant motion involves moving up or down the dipping (tilting) fault plane. In dip-slip faults we identify rock above the fault as the hanging wall, (or headwall) and the rock beneath as the footwall.These terms were originally used by miners to describe the rocks above and below an ore body (Figure 13.24). More @Wikipedia
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