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- 氏家 治
- 富山大学理学部地球科学科
書誌事項
- タイトル別名
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- Electron microprobe determination of strontium content of plagioclase in volcanic rocks.
- EPMA ニ ヨル カザンガン チュウ ノ シャ チョウセキ ノ ストロンチウム テイリョウ ブンセキ
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Plagioclases in common volcanic rocks (basalt to rhyolite) were analyzed using an electron probe microanalyzer (JCXA-733) under the following condition: accelerating voltage=25 kV, beam current at Faraday cup=0.02 μA, line=Lα, crystal=PET, and measurement time=120 sec for the peak (line) and 60 sec (×2) for the backgrounds. The statistical lower limit of detection is SrO=0.05%, and the standard deviation (1σ) is 0.03% for SrO≤0.5%. The analytical results imply that Sr content of plagioclase generally decreases as crystallization progresses in closed magma systems of common volcanic rocks. Also some applications using this analytical method have been briefly discussed.
収録刊行物
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- 岩石鉱物科学
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岩石鉱物科学 29 (2), 28-32, 2000
一般社団法人 日本鉱物科学会
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詳細情報 詳細情報について
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- CRID
- 1390282681503447552
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- NII論文ID
- 10011128980
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- NII書誌ID
- AA1146088X
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- COI
- 1:CAS:528:DC%2BD3cXlvFKnurg%3D
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- ISSN
- 13497979
- 1345630X
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- NDL書誌ID
- 5617407
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- 使用不可