Pressure ridge
Introduction 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 zoneIn 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
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