Pressure ridge
A pressure ridge is a topographic ridge produced by compression. Depending on the affected material, "pressure ridge" may refer to: Pressure ridge (ice), between ice floes Pressure ridge (lava), in a lava flow Pressure ridge (seismic), in a fault zone In a seismic context, a pressure ridge can range in size from a few-metres-long mound, to a kilometres-long lateral ridge. It is the result of one or several earthquakes occurring on certain types of fault geometries, such as compressional bends or stepovers along strike-slip faults. A pressure ridge can for instance be the result of a deep-set obstruction on the fault plane, which leads to material being pushed up during earthquakes. See also Ridge (meteorology), an elongated area of relatively high atmospheric pressure References Structural geology Stratigraphy Faults (geology) Tectonic landforms Earth's crust