Research on optical property of shape of coccolith

2009 Fiscal Year Final Research Report

• Project/Area Number: 18540469
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Petrology/Mineralogy/Science of ore deposit
• Research Institution: Chiba University
• Principal Investigator: FURUKAWA Noboru Chiba University, 大学院・理学研究科, 助教 (40251194)
• Co-Investigator(Renkei-kenkyūsha): KAMEO Koji 千葉大学, 大学院・理学研究科, 准教授 (00312968) ; OSUGA Toshiaki 千葉大学, フロンティアメディカ工学研究開発センター, 准教授 (80223816)
• Project Period (FY): 2006 – 2009
• Keywords: 円石藻類 / 方解石 / 光学的性質 / 赤外吸収

Research Abstract

It aimed to clarify what feature the shape of the coccolith had in optics, UV-VIS-IR spectrum of calcite single crystal were measured. In the absorption of the infrared region, there is remarkable anisotropy by the crystallographic orientation. The anisotropy can be treated as a rotational symmetry around c axis. The result of supporting it was obtained even for the measurement that used coccolith of nature.

Research Products

• [Journal Article] 泥質変成岩の部分融解におけるアルカリ長石と斜長石の花崗岩質メルトへの溶解過程 (2008)
  • Author(s): 森田秀彦, 廣井美邦, 古川登
  • Journal Title: 岩石鉱物科学 37 Pages: 96-109
  • Peer Reviewed
• [Journal Article] Age model, physical properties and paleoceanographic implications of the middle Pleistocene core sediments in the Choshi area, central Japan (2006)
  • Author(s): Kameo, K., Okada, M., El-Masry, M., Hisamitsu, T., Saito, S., Nakazato, H., Ohkohchi, N., Ikehara, M., Yasuda, H., Kitazato, H., Taira, A.
  • Journal Title: Island Arc 15 Pages: 366-377
• [Presentation] 円石藻類の石灰質殻の赤外光透過スペクトル (2009)
  • Author(s): 古川登
  • Organizer: 日本鉱物科学会2009年度年会
  • Place of Presentation: 北海道大学
  • Year and Date: 20090000
• [Presentation] 方解石結晶における赤外光の透過率とその異方性 (2008)
  • Author(s): 古川登
  • Organizer: 日本鉱物科学会2008年度年会
  • Place of Presentation: 秋田大学
  • Year and Date: 2008-09-22
• [Presentation] 方解石結晶における紫外-可視-赤外光の透過率の異方性 (2007)
  • Author(s): 古川登
  • Organizer: 日本鉱物科学会2007年度年会
  • Place of Presentation: 東京大学
  • Year and Date: 2007-09-24
• [Presentation] EMPG XI "Crystallographic direction of coccolith elements of the marine alga Braarudosphaera and its fossil group, Discoaster spp" (2006)
  • Author(s): Furukawa. N, Kameo, K
  • Place of Presentation: Bristol, GB
  • Year and Date: 20060000
• [Presentation] IMA 2006 "Crystallographic direction of coccolith elements of the marine alga Braarudosphaera and its fossil group, Discoaster spp" (2006)
  • Author(s): Furukawa. N, Kameo, K
  • Place of Presentation: Kobe, Japan
  • Year and Date: 20060000