枚方丘陵の大阪層群の花粉分析 : -とくに海成・淡水成層と気候変化について-近畿地方の新期新生代層の研究IV

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タイトル別名
  • Pollenanalysis of the Osaka Group in the Hirakata Hill, with Special Reference to the Relation between Climatic Changes and Marine and Terrestrial Deposits : The Research of Younger Cenozoic Strata in Kinki Province, Part IV
  • 近畿地方の新期新生代層の研究-4-
  • キンキ チホウ ノ シン キ シンセイダイソウ ノ ケンキュウ 4

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抄録

The Osaka Group in the Hirakata Hill is composed of terrestrial deposits intercalating five clay strata of marine origin. The pollenanalytical data could be obtained from a few terrestrial clays in addition to mai ine strata. These results are shown in Fig. 2 and Plate 1. The changes of atomospheric temperature were deduced from the pollenanalytical data. The atomospheric temperature in the marine age of the Osaka Group changes from 50 to 100 in the warmth index by KIRA and is included in almost warm or temperate realm, though the cool or cold temperature is found at the uppermost or lowest part of each marine stratum. As for the terrestrial deposits, the temperature is lower than that of the marine and is considered to be cool or cold. The climatic changes of the Osaka Group in the Hirakata Hill are shown in Fig.9.

収録刊行物

  • 地球科学

    地球科学 1964 (74), 22-32, 1964

    地学団体研究会

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