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Capri Mensa
Capri Mensa is a mesa in the Coprates quadrangle of Mars at 14° south latitude and 47.4° west longitude. It is about 275 km long and was named after a classical albedo feature name.〔http://planetarynames.wr.usgs.gov〕
== Valles Marineris Canyon System ==
Capri Mensa is a mesa in the largest canyon system in the solar system; this great canyon would go almost all the way across the United States. The name for the whole system of canyons is Valles Marineris. Starting at the west with Noctis Labyrinthus in the Phoenicis Lacus quadrangle, the canyon system ends in the Margaritifer Sinus quadrangle with Capri Chasma and Eos Chasma (in the south). The word Chasma has been designated by the International Astronomical Union to refer to an elongate, steep-sided depression. Valles Marineris was discovered by and named for the Mariner 9 mission. Moving east from Noctis Labyrinthus, the canyon splits into two troughs, Tithonium and Ius Chasma in the south. In the middle of the system are very wide valleys of Ophir Chasma (north), Candor Chasma, and Melas Chasma (south). Going farther to the east, one comes to Coprates Chasma. At the end of Coprates Chasma, the valley gets wider to form Capri Chasma in the north and Eos Chasma in the south. The walls of the canyons often contain many layers. The floors of some of the canyons contain large deposits of layered materials. Some researchers believe that the layers were formed when water once filled the canyons. The canyons are deep as well as long. In places they are 8-10 kilometers deep. Remember the Earth's Grand Canyon is only 1.6 kilometers deep.〔ISBN 0-8165-1257-4〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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