Living Reference Work Entry

Encyclopedia of Planetary Landforms

pp 1-10

Date: Latest Version

Wrinkle Ridge

  • Jarmo KorteniemiAffiliated withEarth and Space Physics, Department of Physics, University of Oulu Email author 
  • , Lisa S. WalshAffiliated withCenter for Earth and Planetary Studies, National Air and Space Museum, Smithsonian Institution
  • , Scott S. HughesAffiliated withDepartment of Geosciences, Idaho State University


Asymmetrical ridge, typically composed of a broad linear rise and complex crenulations, which occur on a broad, low-relief arch (Watters 1988; Schultz 2000).


Bergader (“mountain vein,” German); Descriptive:​ ridge; Interpretative:​ contractional lineament; Mare ridge; Mare ridge-highland scarp system); Pressure ridge; Wrinkled mare ridge


Linear arc-shaped or sinuous topographic highs, preferentially found on lowland/plains areas (Golombek et al. 2001), occurring in quasi-regular or periodic spacing (Watters 1991) often in en echelon overlapping sets. They are often bifurcating or anastomosing (Lucchitta and Klockenbrink 1979), braid, and rejoin along strike (Plescia and Golombek 1986). They have asymmetrical profiles (one side having a steeper slope than the other).


Wrinkle ridges are 10s–100s of m high (highest on Mercury), up to 100s of km long, and few to 10s of km wide, displaying 10s of km spacing.

Mercury (in the northern smooth plains and in and ...

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