Strike-Slip Faults In strike-slip faults, the movement is predominantly horizontal. Within this category, the normal fault occurs when the hanging wall drops down, typically associated with extensional forces pulling the crust apart.
Earthquake Fault Definition Mechanics and Fault Movement Classification
Dip-Slip Faults Dip-slip faults involve vertical movement, where one block moves up or down relative to the other. Implications for Seismic Risk Understanding an earthquake fault definition is fundamental to assessing seismic risk.
Surface ruptures, while dramatic during an event, do not always align perfectly with the deepest extent of the fault plane. If the angle of the fault is very low and the displacement is massive, it is specifically categorized as a thrust fault.
Earthquake Fault Definition Mechanics and Fault Movement Classification
Classification of Fault Movement Not all faults move in the same manner, which is why a detailed earthquake fault definition includes specific classifications based on the direction of slip. The primary categories are determined by the relative motion of the hanging wall (the block above the fault) and the footwall (the block below).
More About Earthquake fault definition
Looking at Earthquake fault definition from another angle can help expand the discussion and give readers a second clear paragraph under the same section.
More perspective on Earthquake fault definition can make the topic easier to follow by connecting earlier points with a few simple takeaways.
