Chasma, Chasmata

Living reference work entry

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A descriptor term used in the Gazetteer of Planetary Nomenclature.


A deep, elongated, steep-sided depression (IAU Gazetteer 2014).

Previous Definitions

Canyons (Burba 1990); Canyon. An elongated, steep-sided depression (de Vaucouleurs et al. 1975).

Origin of Term

Deep scarp, Latin; from khasko (gape, yawn) and khasma (gaping hollow), ancient Greek.

See Also




  1. Burba GA (1990) Names on the maps of Venus – a pre-Magellan review. Earth Moon Planet 50–51:541–558CrossRefGoogle Scholar
  2. de Vaucouleurs G, Blunck J, Davies M, Dollfus A, Koval IK, Kuiper GP, Masursky H, Miyamoto S, Moroz VI, Sagan C, Smith B (1975) The new Martian nomenclature of the International Astronomical Union. Icarus 26(1):85–98CrossRefGoogle Scholar
  3. IAU Gazetteer (2014) Gazetter of planetary nomenclature. International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN).

Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Planetary Science Research GroupEötvös Loránd University, Institute of Geography and Earth SciencesBudapestHungary