Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
2001-10-01 |
タイトル |
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タイトル |
Laser-Raman spectroscopic studies on graphite from East Antarctica |
言語 |
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言語 |
eng |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Laser-Raman studies |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
East Antarctica |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Schirmacher Oasis |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Graphitization |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
metamorphism |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
ID登録 |
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ID登録 |
10.15094/00003091 |
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ID登録タイプ |
JaLC |
ページ属性 |
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内容記述タイプ |
Other |
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内容記述 |
P(論文) |
著者名(英) |
Sharma,Shadi R.
Parthasarathy,Gopalakrishnarao
Ravindran,T.R.
Arora,Akhilesh K.
Hussain, Sayed M.
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著者所属(英) |
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en |
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National Geophysical Research Institute/National Geophysical Research Institute/Indira Gandhi Centre for Atomic Research/Indira Gandhi Centre for Atomic Research/National Geophysical Research Institute |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
We report here the Laser-Raman spectroscopic data on the carbonaceous matter (CM) from Schirmacher Oasis (70°45'S, 11°40'E), East Antarctica for the first time. The sample was collected from the Precambrian rock, which consists of garnet-biotite gneiss. The first order Laser-Raman spectra of the sample shows a strong well-ordered Raman peak (0) at 1581 cm^<-1> and a weak broad peak due to disorder (D) at 1354 cm^<-1>. The intensity ratio disordered-to-ordered Raman peak (D/O)_<area> has been used to estimate the in-plan crystallite size (L_a) of the graphite. The experimental values of D/0=0.143 and D/D+O=0.125 indicate that the CM is well crystallized graphite, thereby indicating the high metamorphic grade of the host rocks. Powder X-ray diffraction studies on the same sample of CM also indicate that the CM is well-crystalline hexagonal graphite with d_<002>=0.3354 nm. The structural parameters obtained by Raman spectroscopic method and the estimated in-plane crystallite size (L_a=298A) indicate that the metamorphic grade of the host rock of the studied sample falls in the upper sillimanite zone. The present study suggests that the peak metamorphic temperature of the host rock could be in the temperature range of about 700℃. |
雑誌書誌ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA1130866X |
書誌情報 |
Polar geoscience
巻 14,
p. 157-164,
発行日 2001-10
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出版者 |
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出版者 |
National Institute of Polar Research |