書誌事項
- タイトル別名
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- Description and Correlation of the Nagate Tephra Found in the Terrace Deposits at the Southern Foot of Asan Range in Tokushima Prefecture, Southwestern Japan.
- トクシマケンアサンサンチ ナンロク ノ ダンキュウ タイセキブツ チュウ カラ ミイダサレタ ナガテ テフラ ト ソノ タイヒ
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We discovered a tephra in the terrace deposits at the southern foot of Asan Range in Tokushima Prefecture, southwestern Japan, and named it the Nagate tephra. The Nagate tephra is brown to gray-white in color and is composed of sand-and silt-sized grains that include many phenocrysts. The Nagate tephra is compared with Aso-4 tephra in terms of petrography, refractive index of volcanic glass, and chemical composition of pyroxene.<br>Aso-4 tephra erupted 70 to 90ka BP. The terrace which contains Nagate tephra was completed at the end of the last interglacial stage. The Nagate tephra is important in clarifying the active time of the Median Tectonic Line in the late Pleistocene.
収録刊行物
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- 第四紀研究
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第四紀研究 40 (4), 331-336, 2001
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
- 1390282681473764096
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- NII論文ID
- 10007431347
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- NII書誌ID
- AN0034136X
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- ISSN
- 18818129
- 04182642
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- NDL書誌ID
- 5868193
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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