日本中央山地の氷期の時代について

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There have been many discussions about the glaciation of Japan and now there is a consensus of opinion that in the Central Japan the mountains have been heavily glaciated, though it is possible that some features of the summits with elevations of about 3000m owe their origin to glacial scuipture., However no elaborate correlation of the Ice Age of Japan with the 4 glacial ages of Europe and America has yet been established., After studying the diluvial chronology of the Eustern Asia and Japan, the senior auther had once published his opinion that there were 3 cold ages since the Villafranchian each referred to Pd, dl_<II>., and du, from the argument based on the palaeontological evidences., The last 2 ages may correspond to Riss Ice Age or Barbour's "Riss-Wurn Double Glacial Age.," The Junior auther undertook the study of the topographical evolution of the Hida Range and the senior auther that of the Kiso Range., In this paper they have demonstrated that the Hida and the Kiso Ice Ages might be synchronous and referred to du_I stage and also to Riss or Riss-Wurm Double Glacial Ages from the correlation based on the geomorphological and stratigraphical evidences., It appears that the growth of the glacier originated from the emergence of the Pd erosion surface above the snow line by a rapid elevation during dl_<II>-du_I stage., However the reduction of climatic temperature was small and the glaciation in the Hida and the Kiso Ranges during the upper Pleistocene is attributed to an increased elevation of land rather than to a reduction of climatic temperature.,
日本地質学会の論文
1949-09-20

日本中央山地の氷期の時代について

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