両子山火山の火砕流様堆積物

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書誌事項

タイトル別名
  • PyrocLastic Flow-like Deposit of Futagoyama Volcano
  • リョウ コサン カザン ノ カサイリュウヨウ タイセキブツ

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Futagoyama volcanoes at Kunisaki peninsula, Kyushu, consist of many lava domes of pyroxene andesite, hornblende andesite and biotite hornblende dacite. Pumiceous deposit with two parts, stratified tuffuceous mud bed (the upper) and pumice rich bed (the lower), is found at Matamizu, the southern base of the volcanoes. Studying the deposit, it is concluded the the pumices were empted perhaps as pyroclastic flow from the Futagoyama volcanoes at its almost last stage and then deposited in the shallow water enviroment.

収録刊行物

  • 火山.第２集

    火山.第２集 21 (1), 1-10, 1976

    特定非営利活動法人 日本火山学会

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