書誌事項
- タイトル別名
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- Consideration on the Extent of a Middle Pleistocene Tephra, the Ng-1 Ash in Central Japan.
- チュウキ コウシンセイ テフラ Ng-1 カザンバイ ノ コウイキセイ ノ ケ
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This paper presents an example of the correlation of Early to Middle Pleistocene tephras in Japan. The Ng-1 Ash, intercalated in the Middle Pleistocene Negoya Formation, and tephras which have similar characteristics from various localities in central Japan have been examined. The Ng-1 Ash consists of glass shards, feldspar, quartz and heavy minerals (biotite, amphibole and orthopyroxene). Some tephras at other localities are correlated with the Ng-1 Ash, based on their chemical compositions and refractive indices, their horizons and other characteristics. The age of the Ng-1 Ash is estimated to be 0.3 Ma, and it appears that the source volcano is located in the northern Japan Alps. Investigations covering a wide area are needed to verify both the age and the location determinations.
収録刊行物
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- 第四紀研究
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第四紀研究 30 (5), 435-438, 1991
日本第四紀学会
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詳細情報 詳細情報について
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- CRID
- 1390282681472563584
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- NII論文ID
- 130001564033
- 10011070043
- 10003548892
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- NII書誌ID
- AN0034136X
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- ISSN
- 18818129
- 04182642
- http://id.crossref.org/issn/04182642
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- NDL書誌ID
- 3753984
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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
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- 抄録ライセンスフラグ
- 使用不可