翻訳と辞書 Words near each other ・ Libyan Coastal Highway ・ Libyan Communist Party ・ Libyan conflict ・ Libyan Constitution ・ Libyan Constitutional Assembly election, 2014 ・ Libyan Council of Deputies election, 2014 ・ Libyan Crisis (2011–present) ・ Libyan cuisine ・ Libyan Cup ・ Libyan Cup 2008–09 – First Round ・ Libyan Cup 2008–09 – Quarter Finals ・ Libyan Cup 2008–09 – Round of 16 ・ Libyan Cup 2008–09 – Round of 32 ・ Libyan Cup 2008–09 – Second Round ・ Libyan Desert ・ Libyan desert glass ・ Libyan detainees at Guantanamo Bay ・ Libyan dinar ・ Libyan Division I Basketball League ・ Libyan Division I Basketball League 2008–09 ・ Libyan Eastern Championship 1962–63 ・ Libyan Federation of Arab Republics referendum, 1971 ・ Libyan Football Federation ・ Libyan Foreign Bank ・ Libyan Freedom and Democracy Campaign ・ Libyan frigate Dat Assawari ・ Libyan general election, 1952 ・ Libyan general election, 1956 ・ Libyan general election, 1960 ・ Libyan general election, 1964 Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Libyan desert glass ： ウィキペディア英語版 Libyan desert glass Libyan desert glass (LDG), or great sand sea glass is a substance found in areas in the Libyan Desert. Fragments of desert glass can be found over large areas, up to tens of kilometers. == Geologic origin == The origin of the glass is a controversial issue for the scientific community, with many evolving theories. Meteoritic origins for the glass were long suspected, and recent research linked the glass to impact features, such as zircon-breakdown, vaporized quartz and meteoritic metals, and to an impact crater.〔Kramers, J.D et al (2013): Unique chemistry of a diamond-bearing pebble from the Libyan Desert Glass strewnfield, SW Egypt: Evidence for a shocked comet fragment. Earth and Planetary Science Letters 382, 21-31〕〔B. Kleinmann (1968): The breakdown of zircon observed in the Libyan desert glass as evidence of its impact origin. Earth and Planetary Science Letters 5, 497-501.〕〔Weeks, R. (1984): Libyan Desert glass: A review. Journal of Non-Crystalline Solids, 67, 593-619.〕〔Seebaugh, W. R. & Strauss, A. M. (1984): Libyan Desert Glass: Remnants of an Impact Melt Sheet. LUNAR AND PLANETARY SCIENCE XV, 744-745. ()〕〔Barbara Kleinmann, Peter Horn and Falko Langenhorst (2001): Evidence for shock metamorphism in sandstones from the Libyan Desert Glass strewn field. Meteoritics & Planetary Science 36, 1277-1282〕〔Giovanni Pratesi, Cecilia Viti, Curzio Cipriani and Marcello Mellini (2002): Silicate-silicate liquid immiscibility and graphite ribbons in Libyan desert glass. Geochimica et Cosmochimica Acta 66, 903-911.〕 Some geologists associate the glass not with impact melt ejecta, but with radiative melting from meteoric large aerial bursts. If that were the case, the glass would be analogous to trinitite, which is created from sand exposed to the thermal radiation of a nuclear explosion. The Libyan desert glass has been dated as having formed about 26 million years ago. It was knapped and used to make tools during the Pleistocene. 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「Libyan desert glass」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.