Living Reference Work Entry

Encyclopedia of Planetary Landforms

pp 1-5

Date: Latest Version

Linear Ridge Types (Various Origins)

  • Jarmo KorteniemiAffiliated withEarth and Space Physics, Department of Physics, University of Oulu Email author 


Linear positive relief feature of varying origin.

Related Term

Curvilinear ridge


Linear, near-linear, arcuate, or slightly sinuous ridges. Feature length is substantially larger than its height or width. May occur as solitary or in loose or tight groups. Linear ridges are formed by a variety of processes and are found on most solid surface bodies in the Solar System.


Linear ridges are formed by several very different processes in varying environments. The origin can be distinguished or narrowed down through detailed analysis of the surroundings and the general evolution of the planetary body in question (e.g., the existence of an atmosphere, liquid water on the surface, etc.) (Korteniemi 2009). Sediments or deposits are in certain conditions piled onto the surface into preferentially linear and positive relief features. This is caused by a linear target region for the deposited material and/or forcing by secondary phenomena (e.g., types 1–4). On the other hand, ...

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