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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 Neumann lines ： ウィキペディア英語版 Neumann lines Neumann lines, or Neumann bands, are fine patterns of parallel lines seen in cross-sections of many hexahedrite iron meteorites in the kamacite phase, although they may appear also in octahedrites provided the kamacite phase is about 30 micrometres wide. They can be seen after a polished meteorite cross-section is treated with acid. The lines are indicative of a shock-induced deformation of the kamacite crystal, and are thought to be due to impact events on the parent body of the meteorite.〔O. Richard Norton, Rocks from Space, Mountain Press Pub., 1998, ISBN 978-0-87842-373-6, page 195.〕 The lines are named after Johann G. Neumann, who discovered them in 1848 in the iron meteorite Braunau, a hexahedrite, which fell in 1847.〔Johann G. Neumann: Ueber die krystallinische Struktur des Meteoreisens von Braunau. Naturwissenschaftliche Abhandlungen Wien 3 (1849) 45-56〕〔J. G. Burke: Cosmic Debris, Meteorites in History. University of California Press, 1986.〕 ==See also== * Glossary of meteoritics *Widmanstätten pattern 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「Neumann lines」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.