{{Short description|Vallis on Mars}} {{Infobox feature on celestial object |name = Huo Hsing Vallis |image = [[Image:Huo Hsing Vallis in Syrtis Major.JPG|200px]] |caption = Dikes in which liquid rock once flowed. |coordinates = {{coord|30.5|N|293.4|W|globe:mars_type:landmark|display=inline,title}} }} '''Huo Hsing Vallis''' is an ancient river valley in the [[Syrtis Major quadrangle]] of Mars at 30.5° north latitude and 293.4° west longitude. It is about 318&nbsp;km long and was named after the word for "Mars" in Chinese.<ref>{{cite web |url=http://planetarynames.wr.usgs.gov |title=Gazetteer of Planetary Nomenclature |website=[[Astrogeology Research Program]] |publisher=[[United States Geological Survey]] |access-date=20 March 2022}}</ref>

== Dikes == Some crater floors in the Syrtis Major area show elongated ridges in a lattice-like pattern. Such patterns are typical of [[fault (geology)|faults]] and breccia dikes formed as a result of an impact. The ridges are found where there has been enhanced [[erosion]]. Pictures on this page show examples of these [[dike (geology)|dikes]]. Water may flow along faults. The water often carries minerals that serve to cement rock materials thus making them harder. Later when the whole area undergoes erosion the dikes will remain as ridges because they are more resistant to erosion.<ref>{{Cite web|url=http://hirise.lpl.arizona.edu/PSP_008189_2080|title=HiRISE &#124; Ridges in Huo Hsing Vallis (PSP_008189_2080)}}</ref> This discovery may be of great importance for future colonization of Mars because these types of faults and breccia dikes on earth are associated with key mineral resources. Perhaps, when people live on Mars these areas will be mined as they are on earth. <ref>Head, J. and J. Mustard. 2006. Breccia Dikes and Crater-Related Faults in Impact Craters on Mars: Erosion and Exposure on the Floor of a 75-km Diameter Crater at the Dichotomy Boundary. In Special Issue on Role of Volatiles and Atmospheres on Martian Impact Craters Meteoritics & Planetary Science.</ref> These ridges may belong to a class of structures that have been called [[linear ridge networks]]. There exact origin is unknown at present.

<gallery class="center" widths="190px" heights="180px" > Image:Huo Hsing Vallis Ridges.JPG|Huo Hsing Vallis Ridges, as seen by [[HiRISE]]. Ridges may be caused by water moving along faults. </gallery>

== References == {{commons category|Huo Hsing Vallis}} {{reflist}} {{Geography of Mars}} {{Portal bar|Solar System}}

[[Category:Valleys and canyons on Mars]] [[Category:Syrtis Major quadrangle]]

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