Reull Vallis is a valley on
Mars
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, only being larger than Mercury. In the English language, Mars is named for the Roman god of war. Mars is a terrestrial planet with a thin at ...
that appears to have been carved by water. It runs westward into
Hellas Planitia. It is named after the
Gaelic
Gaelic is an adjective that means "pertaining to the Gaels". As a noun it refers to the group of languages spoken by the Gaels, or to any one of the languages individually. Gaelic languages are spoken in Ireland, Scotland, the Isle of Man, an ...
word for
planet
A planet is a large, rounded astronomical body that is neither a star nor its remnant. The best available theory of planet formation is the nebular hypothesis, which posits that an interstellar cloud collapses out of a nebula to create a you ...
. It is found in the
Hellas quadrangle.
Lineated Floor Deposits
On the floors of some channels are features called lineated floor deposits. They are ridged and grooved materials that seem to deflect around obstacles. They are believed to be ice-rich. Some glaciers on the Earth show such features. Lineated floor deposits may be related to
lobate debris apron
Lobate debris aprons (LDAs) are geological features on Mars, first seen by the Viking Orbiters, consisting of piles of rock debris below cliffs. These features have a convex topography and a gentle slope from cliffs or escarpments, which suggest fl ...
s, which have been proven to contain large amounts of ice. Reull Vallis, as pictured below, displays these deposits.
[http://themis.asu.edu.zoom-20070716a]
Gallery
Image:Reull Vallis.JPG, Drainage features in Reull Vallis, as seen by THEMIS
In Greek mythology and religion, Themis (; grc, Θέμις, Themis, justice, law, custom) is one of the twelve Titan children of Gaia and Uranus, and the second wife of Zeus. She is the goddess and personification of justice, divine order, fai ...
. Click on image to see relationship of Reull Vallis to other features.
File:Reull Vallis lineated deposits.jpg, Reull Vallis with lineated floor deposits, as seen by THEMIS
In Greek mythology and religion, Themis (; grc, Θέμις, Themis, justice, law, custom) is one of the twelve Titan children of Gaia and Uranus, and the second wife of Zeus. She is the goddess and personification of justice, divine order, fai ...
. Click on image to see relationship to other features.
Image:Reull Vallisl layers.JPG, Layers in Reull Vallis, as seen by THEMIS
In Greek mythology and religion, Themis (; grc, Θέμις, Themis, justice, law, custom) is one of the twelve Titan children of Gaia and Uranus, and the second wife of Zeus. She is the goddess and personification of justice, divine order, fai ...
.
Image:Fretted terrain near ReullVallis.jpg, Fretted terrain near Reull Vallis, as seen by HiRISE
High Resolution Imaging Science Experiment is a camera on board the '' Mars Reconnaissance Orbiter'' which has been orbiting and studying Mars since 2006. The 65 kg (143 lb), US$40 million instrument was built under the direction ...
.
Image:Close-up of Fretted Terrain near Reull Vallis.JPG, Close-up of fretted terrain near Reull Vallis, as seen by HiRISE. This area would be a challenge to walk across.
Image:Layers in Monument Valley.jpg, Layers in Monument Valley
Monument Valley ( nv, Tsé Biiʼ Ndzisgaii, , meaning ''valley of the rocks'') is a region of the Colorado Plateau characterized by a cluster of sandstone buttes, the largest reaching above the valley floor. It is located on the Utah-Arizona ...
, Utah. These are accepted as being formed, at least in part, by water deposition. Since Mars contains similar layers, water remains as a major cause of layering on Mars.
See also
*
Dao Vallis
*
Harmakhis Vallis
References
External links
Google Mars map centred on Reull VallisGeologic Map of Reull Vallis Region of Mars by Astrogeology Science Center, U.S. Geological Survey
Valleys and canyons on Mars
Hellas quadrangle
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