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ID 27372
本文ファイル
別タイトル
Discovery of K-Ah Volcanic Ash and Volcanic Glasses Derived from Aira-Tn Volcanic Ash from Terrace Deposits in Sera-Nishi Town, Hiroshima, Southwest Japan
著者
吉川 周作
菅 孝明
キーワード
Quaternary
AT
K-Ah
第四紀
姶良Tn火山灰
鬼界-アカホヤ火山灰
NDC
地球科学・地学・地質学
抄録(英)
K-Ah volcanic ash and volcanic glasses derived from Aira-Tn volcanic ash were discovered from terrace deposits on the bank of Miharagawa river in Sera-Nishi Town. The terrace deposits are lithologically divided into the A and B formations in ascending order. The A formation consists of sand and gravel beds which is probably composed of both debris flow and flood deposits. Volcanic glasses derived from Aira-Tn volcanic ash are found in the sandy layer in the middle part of the formation. The B formation is mostly composed of peaty mud intercalated with thin lenticular beds of K-Ah volcanic ash. The volcanic ash and the volcanic glasses indicate that the A and B formations are late Pleistocene and Holocene in age, respectively. The fossil molar of Palaeoloxodon naumanni (Makiyama), which has been discovered at Tsuguchi in Sera Town, was probably obtained from the A formation.
掲載誌名
広島大学学校教育学部紀要. 第二部
22巻
開始ページ
15
終了ページ
20
出版年月日
2000-01
出版者
広島大学学校教育学部
ISSN
0387-4869
NCID
言語
日本語
NII資源タイプ
紀要論文
広大資料タイプ
学内刊行物(紀要等)
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
部局名
教育学研究科
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