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Tyras Vallis : ウィキペディア英語版 | Tyras Vallis Tyras Vallis is an ancient river valley in the Lunae Palus quadrangle of Mars. It is located at 8.4 N° and 50.2° W. It was named after a classical name for the present Dniester River (in Ukraine).〔http://planetarynames.wr.usgs.gov〕
Image:Tyras Vallis Fan Deposit.JPG|Tyras Vallis Fan Deposit, as seen by HiRISE. Click on image to see layers. Image:Tyrasvallis2.JPG|Tyras Vallis Fan Deposit at a different sun angle. The scale bar is 500 meters long. This image is just to the right of the previous image. Image:Layers in Monument Valley.jpg|Layers in Monument Valley. 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.
== References ==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Tyras Vallis」の詳細全文を読む
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