書誌事項
- タイトル別名
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- Fission Track Ages of Several Quaternary Tephras in Kanto and Chubu Regions, Central Japan.
- カントウ チュウブ チホウ ニ ブンプスル ダイ4キ テフラ ノ フイッション
- 公開日
- 1998
- DOI
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- 10.5026/jgeography.107.3_348
- 公開者
- 公益社団法人 東京地学協会
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説明
Many Quaternary tephra layers are well preserved in the Kanto and Chubu regions of central Japan. In the last 30 years, radiometric ages for some of these tephra layers were determined by various methods. However, previous fission track ages have been shown to be inaccurate by recent work. In this study, 19 Quaternary tephra layers were newly dated by fission track method with zircon crystals based on zeta calibration, as the I.U.G.S. recommended. The ages determined in the southwest area of the Kanto region, in ascending order of stratigraphy, are as follows : GoP2 : 0.27±0.12 Ma, GoP1 : 0.36±0.16 Ma, HBP : 0.43±0.09 Ma, HcP-1 : 0.64±0.23 Ma, HdP-2 0.40±0.17 Ma, Sa Bi : 0.64±0.06 Ma (error is1σ). Ages determined in the Boso Peninsula are as follows : Ks 5 : 0.39±0.20 Ma, Ku 1 : 0.70±0.25 Ma, Kd 10 : 1.20±0.30 Ma. In the Shinshu area of the Chubu region, eight Quaternary tephra layers were dated as follows : Iz-NY : 0.18±0.08 Ma, A5Pm : 0.31 ± 0.06 Ma, A4Pm : 0.41±0.07 Ma, A3Pm 0.39±0.07 Ma, A2Pm : 0.42±0.08 Ma, A1Pm : 0.47±0.08 Ma, Nashinoki Cl : 0.74 ±0.09 Ma, Misawa Cl : 0.66±0.09 Ma. The ages determined in the Takayama area of Chubu region are as follows Takayama Pumice : 0.43±0.07 Ma, Kamitakara pfl. : 0.55±0.07 Ma.
収録刊行物
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- 地学雑誌
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地学雑誌 107 (3), 348-367, 1998
公益社団法人 東京地学協会
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詳細情報 詳細情報について
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- CRID
- 1390282679207178496
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- NII論文ID
- 10002238087
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- NII書誌ID
- AN00322536
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- ISSN
- 18840884
- 0022135X
- http://id.crossref.org/issn/0022135X
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- NDL書誌ID
- 4510911
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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サーチ
- Crossref
- CiNii Articles
- OpenAIRE
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- 抄録ライセンスフラグ
- 使用不可
