論文

査読有り
2001年

General Characterization of Antarctic micrometeorites Collected by the 39th Japanese Antarctic Research Expedition : Consortium Study of JARE AMMs (III)

Antarctic Meteorite Research
  • Terada, K
  • ,
  • Yada, T
  • ,
  • Kojima, H
  • ,
  • Noguchi, T
  • ,
  • Nakamura, T

14
14
開始ページ
89
終了ページ
107
記述言語
英語
掲載種別
研究論文(大学,研究機関等紀要)

From November 1998 to January 1999,the 39th Japanese Antarctic Research Expedition (JARE-39) undertook Japanese first large-scale collection of Antarctic micrometeorites (AMMs), with sizes larger than 10μm, at the Meteorite Ice Field around the Yamato Mountains in Antarctica (at three different locations, for a total of 24 collection sites). The number of collected AMMs larger than 40μm is estimated to be about 5000. Here we present the general characterization (i.e., micro-morphology and surface chemical composition using SEM/EDS) of ∿810 AMMs chosen from 5 of the 24 sites. Additionally, the mineral composition of 61 out of 810 AMMs was determined by Synchrotron X-ray radiation. Preliminary results on mineralogical and chemical compositions show similarities with that of previous studies, even though a pronounced alteration of some AMMs is noticed. A correlation is found between the Mg/Si ratio at the sample's surfaces of unmelted AMMs and the age of snow/ice in which the AMMs are embedded.

リンク情報
CiNii Articles
http://ci.nii.ac.jp/naid/120005506941
CiNii Books
http://ci.nii.ac.jp/ncid/AA11182426
URL
http://id.nii.ac.jp/1291/00006000/
ID情報
  • CiNii Articles ID : 120005506941
  • CiNii Books ID : AA11182426

エクスポート
BibTeX RIS