固体地球科学(S)
セッション小記号地球内部科学・地球惑星テクトニクス
セッションIDS-IT25
タイトル和文Deep Carbon: Diamond formation and carbon speciation in Earth and planetary processes
英文Deep Carbon: Diamond formation and carbon speciation in Earth and planetary processes
タイトル短縮名和文Deep Carbon
英文Deep Carbon
代表コンビーナ氏名和文大谷 栄治
英文Eiji Ohtani
所属和文東北大学大学院理学研究科地学専攻
英文Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University
共同コンビーナ 1氏名和文Litasov Konstantin
英文Konstantin Litasov
所属和文V.S. Sobolev Institute of Geology and Mineralogy SB RAS
英文V.S. Sobolev Institute of Geology and Mineralogy SB RAS
共同コンビーナ 2氏名和文鍵 裕之
英文Hiroyuki Kagi
所属和文東京大学大学院理学系研究科附属地殻化学実験施設
英文Geochemical Research Center, Graduate School of Science, University of Tokyo
共同コンビーナ 3氏名和文Craig E Manning
英文Craig E Manning
所属和文University of California Los Angeles
英文University of California Los Angeles
発表言語EE
スコープ和文
英文Diamonds are observed in various localities including terrestrial and extraterrestrial environments. However, there are several reports on the diamond localities from non-traditional sources including ultra-deep seated diamonds, ultrahigh pressure metamorphic rocks, various magmas, some meteorites and terrestrial craters. These diamonds might be formed by shock events, crystallization from fluids, magmas, or metallic melts, and CVD process. In this session, we welcome papers on occurrence and origin of diamonds from traditional and non-traditional sources in earth and meteorites. We also encourage the experimental studies on diamond genesis, speciation of carbon bearing compounds in terrestrial rocks and meteorites. We welcome papers on formation mechanisms of diamond in natural metal-carbon systems, chromatographic study of deep seated and experimental fluids. We also welcome papers dealing with behavior of organic materials at high pressure and high temperature corresponding to the deep earth and planets. In some chromitites, various enigmatic high pressure phases have been reported as inclusions together with diamond. We also encourage the presentations on descriptions and discussions on the origin of these materials.
発表方法口頭および(または)ポスターセッション
ジョイントセッションAGU
招待講演
  • Richard Wirth (Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences Section 4.4)
  • 大藤 弘明 (愛媛大学地球深部ダイナミクス研究センター)
時間 講演番号 タイトル 発表者 予稿原稿
口頭発表 5月22日 AM2
10:45 - 11:00 SIT25-01Unique occurrences of graphite and diamond in Almahatta Sitta ureilties宮原 正明予稿
11:00 - 11:15 SIT25-02Diamonds and other unusual phases formed during high-temperature gas phase condensation (CVD) in local microenvironments in volcanic rocks. Richard Wirth予稿
11:15 - 11:30 SIT25-03Cuboctahedral diamonds from volcanic rocks of Kamchatka: Contamination or growth in unusual environments?Konstantin Litasov予稿
11:30 - 11:45 SIT25-04Origin of carbonado, an enigmatic polycrystalline diamond deduced from its microtexture and inclusions大藤 弘明予稿
11:45 - 12:00 SIT25-05Retrograde phases of former bridgmanite inclusions in superdeep diamonds?鍵 裕之予稿
12:00 - 12:15 SIT25-06Behavior of nitrogen contained aromatic compound under high-pressure and high-temperature conditions under deep interior of the Earth.篠崎 彩子予稿
講演番号 タイトル 発表者 予稿原稿
ポスター発表 5月22日 コア
SIT25-P01 Revision of the CaCO3–MgCO3 phase diagram at 3 and 6 GPa Konstantin Litasov 予稿
SIT25-P02 The T-X phase diagram Na2CO3–CaCO3 at 3 GPa Konstantin Litasov 予稿
SIT25-P03 FIB-TEM study of the diamond-graphite boundary in K-bearing tourmaline (Kokchetav massif, Northern Kazakhstan) Konstantin Litasov 予稿
SIT25-P04 マルチインパクト仮説2014 U06-P24による,キンバーライトパイプの起源アブダクションで検証
深部からダイヤモンド原石を含むマントル噴出メカニズムプレートテクトニクスの実証
種子 彰 予稿