This is a list of areas of chaos terrain

Chaos terrain

Chaos 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. Chaos terrain is a notable feature of the planet Mars and Jupiter's moon Europa...

officially named by the International Astronomical Union

International Astronomical Union

The International Astronomical Union IAU is a collection of professional astronomers, at the Ph.D. level and beyond, active in professional research and education in astronomy...

 on the planet Mars

Mars

Mars is the fourth planet from the Sun in the Solar System. The planet is named after the Roman god of war, Mars. It is often described as the "Red Planet", as the iron oxide prevalent on its surface gives it a reddish appearance...

. 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

Albedo feature

An albedo feature is a large area on the surface of a planet which shows a contrast in brightness or darkness with adjacent areas....

 as in line with the IAU's rules on planetary nomenclature

Planetary nomenclature

Planetary nomenclature, like terrestrial nomenclature, is a system of uniquely identifying features on the surface of a planet or natural satellite so that the features can be easily located, described, and discussed. The task of assigning official names to features is taken up by the International...

. Such an albedo feature must feature on the maps of Mars made by either Giovanni Schiaparelli

Giovanni Schiaparelli

Giovanni Virginio Schiaparelli was an Italian astronomer and science historian. He studied at the University of Turin and Berlin Observatory. In 1859-1860 he worked in Pulkovo Observatory and then worked for over forty years at Brera Observatory...

 or Eugène Michel Antoniadi

Eugène Michel Antoniadi

Eugène Michel Antoniadi was a Greek astronomer, born in Asia Minor, who spent most of his life in France. He was also known as Eugenios Antoniadis...

 and are listed at Classical albedo features on Mars

Classical albedo features on Mars

The classical albedo features of Mars are the light and dark features that can be seen on the planet Mars through an Earth-based telescope. Before the age of space probes, several astronomers created maps of Mars on which they gave names to the features they could see. The most popular system of...

.

Name	Latitude	Longitude	Diameter (km)
Aram Chaos Aram Chaos Aram Chaos, centered at 2.6°N, 21.5°W, comprises a heavily eroded impact crater on the planet Mars. It lies at the eastern end of the large canyon Valles Marineris and close to Ares Vallis. Various geological processes have reduced it to a circular area of chaotic terrain...	2.57 N	338.5 E	277.0
Aromatum Chaos	1.09 S	317.0 E	91.5
Arsinoes Chaos	7.61 S	332.0 E	230.0
Atlantis Chaos Atlantis Chaos Atlantis Chaos is a region of disrupted terrain in the Phaethontis quadrangle of Mars. It is located around 34.7° south latitude, and 177.6° west longitude. The region is across, and was named after an albedo feature at 30° N, 173° W....	34.4 S	182.4 E	162.0
Aureum Chaos Aureum Chaos Aureum Chaos is a rough, collapsed region in the Margaritifer Sinus quadrangle of Mars at4.4° south latitude and 27° west longitude. It is 368 km across and was named after a classical albedo feature name...	4.35 S	333.0 E	368.0
Aurorae Chaos	8.9 S	324.7 E	750.0
Baetis Chaos	0.24 S	299.47 E	55.0
Candor Chaos	6.92 S	287.4 E	97.0
Chryse Chaos	10.29 N	323.3 E	735.0
Echus Chaos	10.78 N	285.2 E	473.0
Eos Chaos Eos Chaos Eos Chaos is a rough, collapsed area in the Coprates quadrangle on Mars at16.8° south latitude and 46.9° west longitude. It is about 490 km long and was named after the Greek name of Aurora, an albedo feature.- Valles Marineris Canyon System :...	16.62 S	313.1 E	490.0
Erythraeum Chaos	21.86 S	347.62 E	149.0
Galaxias Chaos Galaxias Chaos Galaxias Chaos is an area of broken landscape in the Cebrenia quadrangle of Mars, located at 34.1° N and 213.6° W. It is 234.0 km across and was named after an albedo feature name....	33.8 N	146.4 E	234.0
Ganges Chaos	9.64 S	313.8 E	120.0
Gorgonum Chaos Gorgonum Chaos Gorgonum Chaos is a set of canyons in the Phaethontis quadrangle of Mars. It is located at37.5° south latitude and 170.9° west longitude. Its name comes from an albedo feature at 24S, 154W.- Gullies :...	37.19 S	189.1 E	149.0
Hellas Chaos	47.48 S	64.0 E	595.0
Hydaspis Chaos Hydaspis Chaos Hydaspis Chaos is a region in the Oxia Palus quadrangle of Mars, located at3.2° north latitude and 27.1° west longitude. The region is about 355 km across. It was named after a classical albedo feature.- River Valleys and Chaos :...	3.16 N	332.9 E	355.0
Hydraotes Chaos Hydraotes Chaos Hydraotes Chaos is a broken up region in the Oxia Palus quadrangle of Mars, located at 0.8° North and 35.4° West. It is 417.5 km across and was named after a classical albedo feature name. More information and more examples of Chaos can be found at Chaos terrain....	0.79 N	324.6 E	417.5
Iamuna Chaos	0.2 S	319.3 E	18.0
Iani Chaos Iani Chaos Iani Chaos, the source region of Ares Vallis on Mars, is centered at ~342°E, 2°S. The chaotic terrain is widely believed to have formed via the removal of subsurface water or ice, resulting in flooding at the surface, and the formation of Ares Vallis...	2.77 S	342.5 E	434.0
Ister Chaos Ister Chaos Ister Chaos is a broken up area in the Lunae Palus quadrangle of Mars. It is located at 13.0° N and 56.4° W. It is 103.4 km across and was named after a classical albedo feature at 10N, 56W....	12.86 N	303.6 E	103.4
Margaritifer Chaos	8.6 S	338.4 E	390.0
Nilus Chaos	25.35 N	282.8 E	283.0
Oxia Chaos	0.2 N	320.1 E	26.5
Pyrrhae Chaos	10.38 S	331.5 E	189.0
Xanthe Chaos	11.74 N	317.75 E	34.0