An attempt to estimate the paleotemperature based on the analysis of boreal fossil molluscan assemblages : On the Early Pleistocene Omma-Manganji fauna

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Other Title
  • 北方系貝化石集団による古水温推定の試み : 更新世前期の大桑・万願寺動物群を例として(新生代化石生物温度計の試み : その論理と適用 (その 2))
  • 北方系貝化石集団による古水温推定の試み--更新世前期の大桑・万願寺動物群を例として
  • ホッポウケイ カイ カセキ シュウダン ニ ヨル コ スイオン スイテイ ノ

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Description

Various methods have been used for estimating sea surface temperature, based on the analysis of fossil molluscan fauna in Japan. By using the HDM characteristic curve and climato-geographic zoning mathods, Mizuhopecten-Glycymeris assemblage which was widely distributed in the Early Pleistocene Omma-Manganji fauna was examined. It was proved that the sea surface temperatures of the Japan Sea coast areas in Early Pleistocene were 0.5 to 3 degrees lower than those of the recent Sea of Japan. In this age, an intermittent influx of warm current to the Japan Sea frequently took place in relation to the opening of Paleo-Tsushima Strait. The obtained data mentioned above show that the Early Pleistocene climate around Japan Sea was more weakly affected by the warm current than the Holocene one.

Journal

  • Fossils

    Fossils 55 (0), 34-48, 1993

    Palaeontological Society of Japan

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