韓国・濟州島で採取したボーリング試料の地質年代と層相

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  • カンコク サイシュウトウ デ サイシュシタ ボーリング シリョウ ノ チシツ
  • Geologic age and facies of the boring core sediments from Cheju Island, Korea

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For elucidating a paleoenvironment around the eastern part of the East China Sea, boring core sediments at two sites (Mt. Tong Su Ak-TSA and Sogwipo-SGP) in Cheju Island, Korea were collected. Geologic ages at three horizons in each core were given by 14C dating. The age of the lowermost part (290-300cm depth) of TSA sediments mostly composed of dark brown peat is 6070±120 yBP., Holocene. SGP sediments mainly consist of dark brown peaty silt and the age is 26700±150 yBP., late Pleistocene at 490-500cm depth.

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