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Spur is a feature on Earth's Moon, a crater in the Hadley–Apennine region. Astronauts David Scott and James Irwin visited it in 1971, on the Apollo 15 mission, during EVA 2. Spur was designated Geology Station 7. Spur is located on the north slope of Mons Hadley Delta, about 200 m above the plain to the north. It is east of the much larger St. George crater, and about 5 km south of the Apollo 15 landing site itself. The astronauts found the "Genesis Rock", sample 15415, at Spur. The sample contains a large clast of anorthosite, and Dave Scott said "Guess what we just found! I think we found what we came for" as he examined the sample.〔(Apollo 15 Lunar Surface Journal ), The Genesis Rock〕 They also found samples 15445 and 15455, so-called black and white breccias, which are thought to be impact melt breccia resulting from the Imrbrium basin impact event.〔To a Rocky Moon: A Geologist's History of Lunar Exploration. Don E. Wilhelms, University of Arizona Press (1993), p. 276. ISBN 978-0816510658〕 The crater was named by the astronauts, and the name was formally adopted by the IAU in 1973.〔 ==Gallery of Samples== File:Apollo 15 Genesis Rock.jpg|15415, the Genesis rock File:A15 sample 15445 S71-44129 cr.jpg|15445, black and white breccia File:A15 sample 15455 S71-43891 cr.jpg|15455, black and white breccia 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「Spur (lunar crater)」の詳細全文を読む スポンサード リンク
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