羅臼岳火山における最近2200年間の噴火史  [in Japanese] Eruptive History of Rausudake Volcano during the Last 2200 Years  [in Japanese]

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Author(s)

    • 中川 光弘 NAKAGAWA Mitsuhiro
    • 北海道大学大学院理学研究科地球惑星物質科学専攻 Department of Earth and Planetary Sciences, Graduate School of Science, Hokkaido Universit
    • 吉田 真理夫 YOSHIDA Mario
    • 北海道大学大学院理学研究科地球惑星物質科学専攻:(現)ダイヤコンサルタント(株) Department of Earth and Planetary Sciences, Graduate School of Science, Hokkaido University:(Present)Dia Consultants Co., Ltd.

Abstract

Recent eruptive episodes since the last 2200 years of Rausudake volcano, east Hokkaido, are revealed by tephrochronology, geological survey of volcanic edifice and petrology of eruptive products. Eruptive ages of these episodes are estimated by <sup>14</sup>C age dating, presence of wide spread tephras, Ma-b from Mashu volcano (about 1 ka) and Ta-a from Tarumai volcano (AD 1739), and thickness of soil between tephra. We identify three major eruption episodes occurring in ca. 2200, ca. 1400 and 500-700 y. B. P. In each episode, plinian eruption associated with generation of pyroclastic flows and possibly with effusion of lava flows and domes had occurred from the summit area. Volcanic explosive index (VEI) of each eruption is 2-4. Tephra identified as the deposits of ca. 1400 y. B. P, eruption had spread widely and has been found in Kunashiri Island which locates about 60 km east of Rausudake volcano. In Shiretoko Peninsula, east Hokkaido, Mt. Shiretoko-Iouzan has been recognized to be an active volcano. We should note that Mt. Rausudake is also active volcano that repeated its magmatic eruptions at intervals of ca. 800 years.

Journal

  • BULLETIN OF THE VOLCANOLOGICAL SOCIETY OF JAPAN

    BULLETIN OF THE VOLCANOLOGICAL SOCIETY OF JAPAN 45(2), 75-85, 2000

    The Volcanological Society of Japan

References:  16

Cited by:  8

Codes

  • NII Article ID (NAID)
    110003041183
  • NII NACSIS-CAT ID (NCID)
    AN10512786
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    0453-4360
  • NDL Article ID
    5342880
  • NDL Source Classification
    ZM44(科学技術--地球科学--海洋・陸水・火山)
  • NDL Call No.
    Z15-101
  • Data Source
    CJP  CJPref  NDL  NII-ELS  J-STAGE 
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