The Louros Valles are a system of valleys on the planet Mars in the

Coprates quadrangle The Coprates quadrangle is one of a series of 30 quadrangle maps of Mars used by the United States Geological Survey (USGS) Astrogeology Research Program. The Coprates quadrangle is also referred to as MC-18 (Mars Chart-18). The Coprates quadra ...

. They sit on the southern edge of

Ius Chasma Ius Chasma is a large canyon in the Coprates quadrangle of Mars at 7° south latitude and 85.8° west longitude. It is about 938 km long and was named after a classical albedo feature name. Valles Marineris Canyon System Ius Chasma is a m ...

. They are east of

Noctis Labyrinthus Noctis Labyrinthus () is a region of Mars located in the Phoenicis Lacus quadrangle, between Valles Marineris and the Tharsis upland. The region is notable for its maze-like system of deep, steep-walled valleys. The valleys and canyons of this ...

. They display many layers in their sidewalls. Many other places on Mars also show rocks arranged in layers. Rock layers can be formed by volcanoes, wind, or water. A detailed discussion of layering with many Martian examples can be found in Sedimentary Geology of Mars. The Louros Valles are centered at 8.41 S and 278.23 E, and were named after a modern river in Greece. The name was approved in 1982.https://planetarynames.wr.usgs.gov/nomenclature/SearchResults;jsessionid=75C005EBABDC58C0045BD56A9C768CFB File:Mars Valles Marineris.jpeg, Wide view of Mars centered on Valles Marineris, taken with Viking images Note, this picture can be greatly enlarged by clicking on it several times. File:Louresvallesodyssey.jpg, Wide view of part of Ius Chasma with the Louros Valles along its southern margin. File:Louresvallesmola.jpg, Labeled view of part of

Valles Marineris Valles Marineris (; Latin for ''Mariner program, Mariner Valleys'', named after the ''Mariner 9'' Mars orbiter of 1971–72 which discovered it) is a system of canyons that runs along the Mars, Martian surface east of the Tharsis region. At more ...

. Colors indicate elevation. The Louros Valles are in the middle left of the image. File:Louresvallesctxwide.jpg, Wide view with CTX image of part of the Louros Valles File:Louresvallesctxclose.jpg, Closer view with CTX image of part of the Louros Valles The following set of images start with wide views of the whole planet that are centered near the Louros Valles. They transition to close views with enlarged HiRISE images. File:ESP 048980 1725layers.jpg, Wide view of layers in the Louros Valles, as seen by HiRISE under HiWish program. The Louros Valles are part of

. File:48980 1725layersclose2.jpg, Close view of layers in the Louros Valles, as seen by HiRISE under HiWish program; this is an enlargement of a previous image. File:48980 1725layers.jpg, Close view of layers in the Louros Valles, as seen by HiRISE under HiWish program; this is an enlargement of a previous image. File:48980 1725layersclose.jpg, Close view of layers in the Louros Valles, as seen by HiRISE under HiWish program; this is an enlargement of a previous image. File:ESP 048980 1725layersclosecolor.jpg, Close view of layers in the Louros Valles, as seen by HiRISE under HiWish program; this is an enlargement of a previous image.

References

{{Geography of Mars Valleys and canyons on Mars Coprates quadrangle