燧ヶ岳火山の噴火史 Eruptive History of Hiuchi Volcano

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The Edifice of Hiuchi Volcano was founded on the Mokake ignimbrite plateau which is directly underlain by the Nanairi pumice. They erupted from near the present summit successively about 350ka. On the plateau, the Ozorizawa cone was first established about 100 ka. Next, the Shibayasugura cone having twin peaks, Shibayasugura (2, 356 m) and Manaitagura (2, 346 m), was built shifting slightly southeast. At 19ka, the Jubeike lava flow and Kumazawa Tashiro lava dome were issued from the northeastern flanks. The latter was accompanied by a devastating blast. Southward-opening horseshoe depression is source of the Nushiri debris avalanche, which dammed up the Nushiri River and formed the Oze marsh about 8ka. The Akanagure lava dome and flows immediately occupied the depression. The youngest volcanic feature at Hiuchi is the Miike lava dome, 300m south of the Manaitagura peak. It emplaced during the 16th century, just before the Shirohikemizu flood descended the Hinoemata River on July 28, 1544. Hiuchi Volcano has erupted 17 × 10<SUP>12</SUP> kg of magma since its birth, 350 thousand years ago. Average discharge rate is 4.9 × 10<SUP>10</SUP> kg per thousand years, an order of magnitude smaller than that of the most active Japanese volcanoes.

収録刊行物

  • 地學雜誌  

    地學雜誌 106(5), 660-664, 1997-10-25 

    Tokyo Geographical Society

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  • NII論文ID(NAID)
    10002236520
  • NII書誌ID(NCID)
    AN00322536
  • 本文言語コード
    JPN
  • 資料種別
    SHO
  • ISSN
    0022135X
  • NDL 記事登録ID
    4322558
  • NDL 雑誌分類
    ZM41(科学技術--地球科学)
  • NDL 請求記号
    Z15-169
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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