書誌事項
- タイトル別名
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- Geochemical Features of Pyroclastic Deposits in the Yokoyama Core, Sakurajima Volcano, SW Japan
- サクラジマ カザン,ヨコヤマ コア カラ ミイダサレタ カサイタイセキブツ ノ ガンセキ カガクテキ トクチョウ
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抄録
Sakurajima volcano is the most active volcano in Japan. The Yokoyama core (JMA-V44) was drilled on the western foot of this volcano in 2009. This core consists of volcanic soil (0 to -1.30m in depth), volcanic fan deposits (-1.30 to -49.60m), marine sediments (-49.60 to -59.60m), non-welded normal-graded dacite pumice lapilli tuff (PFD1; -59.60 to -69.34m), marine sediments (-69.34 to -73.22m), and weakly-to-non welded dacite pumice lapilli tuff (PFD2; -73.22 to -100.60m). Geochemical features of essential pumice in PFD1 coincide with ones of the 12.8-ka Sakurajima-Satsuma tephra (P 14), that is the largest product of Sakurajima volcano in 11km3 of volume and erupted at the beginning of the Younger Kitadake stage. On the other hand, essential pumice in PFD2 differs from the products of Sakurajima volcano in major and trace element contents. PFD2 pumice has lower Ti, P and heavy REE contents than Sakurajima ones. PFD2 presumably belongs to basement formations of Sakurajima volcano and Aira caldera and topographically forms the wall of Aira caldera.
収録刊行物
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- 火山
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火山 58 (4), 519-528, 2013
特定非営利活動法人 日本火山学会
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詳細情報 詳細情報について
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- CRID
- 1390282679281672192
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- NII論文ID
- 110009686695
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- NII書誌ID
- AN10512786
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- ISSN
- 21897182
- 04534360
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- NDL書誌ID
- 025150986
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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
- CiNii Articles
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- 使用不可