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Shalbatana Vallis is an ancient water-worn channel on Mars, located in the Oxia Palus quadrangle at 7.8° north latitude and 42.1° west longitude. It is the westernmost of the southern Chryse outflow channels. Beginning in a zone of chaotic terrain, at 0° latitude and 46° W longitude, it ends in Chryse Planitia.〔ISBN 0-292-71068-2〕 Shalbatana Vallis contains our first definitive evidence of a Martian shoreline. This shoreline was part of an ancient lake in size and deep. The study carried out with HiRISE images indicates that water formed a long canyon that opened up into a valley, deposited sediment, and created a delta. This delta and others around the basin imply the existence of a large, long-lived lake. Of special interest is evidence that the lake formed after the warm, wet period was thought to have ended. So, lakes may have been around much longer than previously thought. 〔http://www.colorado.edu/news/r/7e9c22ec0cd6dabc007bb14ed2e29f16.html〕〔http://www.space.com/scienceastronomy/090617-Mars-lake.html〕 It is the word for "Mars" in Akkadian.〔http://planetarynames.wr.usgs.gov〕 File:Quadrângulo de Oxia Palus.JPG|Quadrangle map of Oxia Palus labeled with major features. This quadrangle contains many collapsed areas of Chaos and many outflow channels (thought to be carved by catastrophic floods). Wikichaosmap.jpg|Tography map of Oxia Palus region of Mars showing the location of a number of chaos regions and valleys, including Shalbatana Vallis Image:Shalbatana Vallis Floor.JPG|Shalbatana Vallis Floor, as seen by HiRISE. Scale bar is 1000 meters long. Image:Shalbatana Vallis.JPG|Shalbatana Vallis, as seen by HiRISE. The scale bar is 500 meters long. == 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「Shalbatana Vallis」の詳細全文を読む スポンサード リンク
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