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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Boxhole crater ： ウィキペディア英語版 Boxhole crater Boxhole is a young impact crater located approximately 180 km (265 km by road) north-east of Alice Springs in the Northern Territory, Australia. It is 170 metres in diameter and its age is estimated to be 5,400 ± 1,500 years based on the cosmogenic14C terrestrial age of the meteorite,〔Kohman T. P. and Goel P.S. 1963. Terrestrial ages of meteorites from cosmogenic 14C. In: ''Radioactive Dating'', pp. 395–411. International Atomic Energy Agency, Vienna.〕 placing it in the Holocene. The crater is exposed to the surface. In 1937 Joe Webb, a shearer at Boxhole sheep station, took geologist Cecil Madigan to examine the crater. Madigan discovered nickel-bearing metallic fragments and iron shale-balls similar to those found at Henbury to the south of Alice Springs. A later search found additional meteoritic metal including an iron mass of 181 pounds (82 kg) , now in the Natural History Museum, London. == 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「Boxhole crater」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.