课题基金 / 基金详情

Study of thermomagnetic identification of greigite as an indispensable carrier to natural remanent magnetization of sediments

Study of thermomagnetic identification of greigite as an indispensable carrier to natural remanent magnetization of sediments
沉积物天然剩磁不可缺少载体的镁镁石热磁识别研究
批准号:
18540458
负责人:
TORII Masayuki
金额:
$1.98万
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (C)
财政年份:
2006
资助国家:
日本
项目状态:
已结题
起止时间:
2006 至 2007

项目摘要

项目成果

TORII Masayuki的其他基金

相似基金

相关文献

中文摘要
翻译
点击翻译按钮获取中文摘要
英文摘要
The main target of the research is to elucidate thermomagnetic property of greigite which is generally found as a minor, but indispensable magnetic mineral in various types of sediments. The Curie temperature of greigite has been reported as 320 degrees C in most of the previous works. However some of the greigite-bearing sediments show stable remanence close to 400 degrees C. To solve this inconsistency, we conducted rock magnetic and X-ray diffraction (XRD) studies using natural greigite sample form Erhjen-chi section, southern Taiwan.XRD results show that greigite has survived by heating up to 340 degrees C, but difficult to detect magnetically above that temperature. We also applied a high-temperature XRD method in helium atmosphere. The existence of greigite was confirmed during the heating up to 380 degrees C. We also found neo-formation of pyrrhotite, pyrite, and marcasite by the heating above 340 degrees C. Hematite was also observed above 380 C. These results are consistent with the fact that some of the greigite-bearing sediments can hold remanent magnetization after the heating up to 400 degrees C. Some of neo-formed minerals could show the magnetization inherited from the original magnetic minerals, however.We are now thinking to continue further investigation on this topic, because we also found that our result was strongly dependent upon the purity of the sample. It is necessary to check reproducibility of the results by using several different samples.
期刊论文(0)
专著(0)
科研奖励(0)
会议论文
グレイガイトの高温磁気特性-120〜260℃付近の高保磁力成分の増加-
黑云石的高温磁特性 - 120~260℃附近高矫顽力成分增加 -
DOI: --
发表时间: 2007
期刊:
影响因子: --
作者: [川村 紀子, 鳥居 雅之, 鈴木 庸平]
通讯作者: 鈴木 庸平
DOI: --
发表时间: 2007
期刊:
影响因子: --
作者: [Torii, m., Kobayashi, S., Kodama, K. and Horng, C-S.]
通讯作者: C-S.
グレイガイトの高温磁気特性-120〜260℃付近の高保磁力成分の増加
花岗岩高温磁性能 -120~260℃附近高矫顽力成分增加
DOI: --
发表时间: 2007
期刊:
影响因子: --
作者: [川村 紀子, 鳥居 雅之, 鈴木 庸平]
通讯作者: 鈴木 庸平
DOI: --
发表时间: 2007
期刊:
影响因子: --
作者: [N. Kawamura, M. Torii, Y. Suzuki]
通讯作者: Y. Suzuki
Basic study for renovation of archeomagnetism in Japan
  • 批准号:
    21500991
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 资助金额:
    $1.91万
  • 财政年份:
    2009
  • 负责人:
    TORII Masayuki
  • 依托单位:
Fault gouge : rock magnetic and structural study
  • 批准号:
    08454140
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
  • 资助金额:
    $0.7万
  • 财政年份:
    1996
  • 负责人:
    TORII Masayuki
  • 依托单位:
海外基金