Encyclopedia of Planetary Landforms

2015 Edition
| Editors: Henrik Hargitai, Ákos Kereszturi

Chaos, [Chaoses]

  • Henrik Hargitai
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-3134-3_43

A descriptor term used in the Gazetteer of Planetary Nomenclature.


Distinctive area of broken terrain (Müller and Jappel 1977; IAU Gazetteer 2014).

Origin of Term

Khaos: unordered state of cosmos before creation, ancient Greek.

History of Nomenclature

Added in 1976 to name topographic features on Mars (Müller and Jappel 1977, p. 331).

See Also


  1. IAU Gazetteer (2014) Gazetter of planetary nomenclature. International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN). http://planetarynames.wr.usgs.gov/
  2. Müller E, Jappel A (1977) Proceedings of the 16th general assembly. Transactions of the IAU Vol. XVI B. D. Reidel Publishing Company, Dordrecht, HollandGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.NASA Ames Research Center/NPPMoffett FieldUSA