<sup>14</sup>C-age of Charcoal from the Miike Tephra of Kirishima Volcano, Japan

DOI
  • Konoo Tatsuya
    Graduate School of Science and Technology, Kumamoto University Geological Survey of Japan, AIST
  • Geshi Nobuo
    Department of Earth and Planetary Sciences, Faculty of Science, Kyushu University Geological Survey of Japan, AIST
  • Naruo Hideto
    Izumi Senior High School
  • Nishihara Ayumu
    Faculty of Social and Environmental Studies, Tokoha University Geological Survey of Japan, AIST

Bibliographic Information

Other Title
  • 霧島火山，御池テフラ層中の炭化物の<sup>14</sup>C年代

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Description

<p>Miike Lake is a maar about 1 km in diameter located in the southeastern part of Kirishima Volcano, and was formed by one of the largest Plinian eruption of the volcano. Here, we report the 14C date of 4078±28 BP of the charcoal (240220 A-C01) found in the Miike tephra. The calibrated age is consistent with the previous reported dates from humic soils just above and below the Miike tephra. The sampled outcrop (MZ2419) is located approximately 0.8 km south of Miike crater rim. We can observe well-vesiculated red pumice, indicating high-temperature oxidation, in the stratigraphic level from which we collected 240220 A-C01. In addition, there is no strong evidence of organic substances contamination due to disturbance of the layers after the tephra deposits has settled. These characteristics suggest that 240220 A-C01 was carbonized by deposition of this tephra under high-temperature condition. Therefore, the 14C age obtained in this study is considered to be a fairly accurate eruption age of Miike tephra. The reported age will be useful in tephrochronology in southern Kyushu.</p>

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Details 詳細情報について

  • CRID
    1390866800029399936
  • DOI
    10.18940/kazan.70.1_45
  • ISSN
    21897182
    04534360
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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