This is a list of areas of chaos terrain officially named by the International Astronomical Union on the planet Mars. Chaos terrain (or chaotic terrain) is an astrogeological term used to denote planetary surface areas where features such as ridges, cracks, and plains appear jumbled and enmeshed with one another. Coordinates are in planetocentric latitude with east longitude.
Areas of chaos terrain are usually named after a nearby albedo feature as in line with the IAU's rules on planetary nomenclature. Such an albedo feature must feature on the maps of Mars made by either Giovanni Schiaparelli or Eugène Michel Antoniadi and are listed at Classical albedo features on Mars.
| Chaos | Coordinates | Diameter (km) | Approval date | Named after | Ref |
|---|---|---|---|---|---|
| Aeolis Chaos | 7°08′S 150°36′W / 7.13°S 150.6°W | 201 | 2018 | Classical albedo feature name | WGPSN |
| Aram Chaos | 2°31′N 337°37′E / 2.52°N 337.61°E | 283.81 | 1976 | Classical albedo feature name | WGPSN |
| Aromatum Chaos | 1°02′S 317°02′E / 1.03°S 317.03°E | 72.8 | 1979 | Classical albedo feature name | WGPSN |
| Arsinoes Chaos | 7°40′S 332°05′E / 7.66°S 332.08°E | 200.08 | 1982 | Daughter of Ptolemy Lagun and Bernice | WGPSN |
| Atlantis Chaos | 34°17′S 182°41′E / 34.28°S 182.69°E | 181.37 | 1985 | From albedo feature at 30N, 173W | WGPSN |
| Aureum Chaos | 3°53′S 333°02′E / 3.89°S 333.04°E | 351.03 | 1976 | Classical albedo feature name | WGPSN |
| Aurorae Chaos | 8°28′S 325°11′E / 8.47°S 325.19°E | 713.92 | 1991 | Classical albedo name | WGPSN |
| Baetis Chaos | 0°10′S 299°36′E / 0.17°S 299.6°E | 66.66 | 2006 | Classical albedo feature name | WGPSN |
| Candor Chaos | 6°56′S 287°25′E / 6.94°S 287.42°E | 0 | 1985 | From albedo feature at 5N, 75W | WGPSN |
| Caralis Chaos | 37°12′S 178°36′E / 37.2°S 178.6°E | 103.35 | 2014 | Classical albedo feature name | WGPSN |
| Chryse Chaos | 9°52′N 322°49′E / 9.86°N 322.81°E | 658.89 | 2008 | Classical albedo feature name | WGPSN |
| Echus Chaos | 10°47′N 285°17′E / 10.79°N 285.28°E | 480.51 | 1985 | Classical albedo feature name | WGPSN |
| Eos Chaos | 16°49′S 313°29′E / 16.82°S 313.48°E | 497.85 | 1982 | Classical albedo feature name | WGPSN |
| Erythraeum Chaos | 21°50′S 347°37′W / 21.84°S 347.62°W | 147.63 | 2007 | Classical albedo feature name | WGPSN |
| Galaxias Chaos | 33°50′S 347°37′E / 33.83°S 347.62°E | 234.48 | 1985 | Albedo feature name | WGPSN |
| Ganges Chaos | 9°46′S 313°58′W / 9.76°S 313.96°W | 113.73 | 2006 | Classical albedo feature name | WGPSN |
| Gorgonum Chaos | 37°16′S 189°06′E / 37.26°S 189.1°E | 150.71 | 1985 | From albedo feature at 24S, 154W | WGPSN |
| Hellas Chaos | 47°07′S 64°25′W / 47.12°S 64.41°W | 590.62 | 1994 | Named for albedo feature Hellas | WGPSN |
| Hydaspis Chaos | 3°05′N 333°04′E / 3.09°N 333.07°E | 336.04 | 1976 | Classical albedo feature name | WGPSN |
| Hydrae Chaos | 5°54′S 300°02′E / 5.9°S 300.03°E | 66 | 2014 | Classical albedo feature name | WGPSN |
| Hydraotes Chaos | 1°07′N 324°43′E / 1.12°N 324.71°E | 419.04 | 1976 | Classical albedo feature name | WGPSN |
| Iamuna Chaos | 0°17′S 319°23′E / 0.28°S 319.39°E | 21.72 | 2006 | Classical albedo feature name | WGPSN |
| Iani Chaos | 2°11′S 342°58′E / 2.19°S 342.96°E | 450.51 | 1976 | Classical albedo feature name | WGPSN |
| Ister Chaos | 12°57′N 303°26′E / 12.95°N 303.44°E | 109.1 | 1985 | From classical albedo feature at 10N, 56W | WGPSN |
| Margaritifer Chaos | 9°18′S 338°18′E / 9.3°S 338.3°E | 383.67 | 1976 | Classical albedo feature name | WGPSN |
| Nia Chaos | 6°44′S 292°37′E / 6.74°S 292.62°E | 48 | 2017 | Classical albedo feature name | WGPSN |
| Nilus Chaos | 25°23′N 283°03′E / 25.39°N 283.05°E | 283 | 1985 | Named for albedo feature at 20N, 65W | WGPSN |
| Oxia Chaos | 0°13′N 320°08′E / 0.22°N 320.13°E | 24.12 | 2006 | Classical albedo feature name | WGPSN |
| Pyrrhae Chaos | 10°28′S 331°36′W / 10.46°S 331.6°W | 162.35 | 1982 | Albedo feature name | WGPSN |
| Xanthe Chaos | 11°52′N 317°47′E / 11.87°N 317.78°E | 34.37 | 2006 | Classical albedo feature name | WGPSN |
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References
Wikimedia Commons has media related to Chaotic terrains on Mars.
This list was adapted from the public domain Gazetteer of Planetary Nomenclature, courtesy of the United States Geological Survey.
This page was last edited on 13 February 2024, at 20:23