書誌事項
- タイトル別名
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- Sr isotope composition of island-surface dolomites at Kita-daito-jima, northern Philippine Sea
- キタダイトウジマ ノ チヒョウ ニ ブンプ スル ドロマイト ノ Sr ドウイタイ ソセイ
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抄録
We present strontium (Sr) isotope data for island-surface dolomites at Kita-daito-jima, northern Philippine Sea. The 87Sr/86Sr ratios of 50 samples fall within a wide range from 0.709037 to 0.709079, corresponding to 4.9-2.1 Ma. This wide range in Sr ages reflects the fact that the island-surface dolomites comprise variable mixtures of geochemically distinct, diachronous, dolomite crystal phases. Our results indicate that the Sr isotope ages of multi-generational dolomites on carbonate islands such as Niue and Little Bahama Bank, as well as Kita-daito-jima, should be re-examined employing a new method that determines the Sr isotope ratio of individual crystal phases.
収録刊行物
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- 地質学雑誌
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地質学雑誌 116 (4), 237-240, 2010
一般社団法人 日本地質学会
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詳細情報 詳細情報について
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- CRID
- 1390001206237658368
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- NII論文ID
- 130000413336
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- NII書誌ID
- AN00141768
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- ISSN
- 13499963
- 00167630
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- NDL書誌ID
- 10682317
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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
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可