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Lampland (Martian crater) : ウィキペディア英語版 | Lampland (Martian crater)
Lampland Crater is an impact crater in the Thaumasia quadrangle of Mars, located at 35.9°S latitude and 79.6°W longitude. It is 79.0 km in diameter and was named after Carl Otto Lampland, and the name was approved in 1973. ==Why craters are important== The density of impact craters is used to determine the surface ages of Mars and other solar system bodies.〔http://www.lpi.usra.edu/publications/slidesets/stones/〕 The older the surface, the more craters present. Crater shapes can reveal the presence of ground ice.
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