ON SOME PROBLEMS OF THE TOPOGRAPHIC STUDIES OF VOLCANOES IN JAPAN

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  • 本邦の火山地形に關する二,三の疑義
  • ホンポウ ノ カザン チケイ ニ カンスル ニ , サン ノ ギギ

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Abstract

The Pleistocene and recent volcanoes of Japan are almost exclusively situated on high mountainous regions. They must have erupted on these ridges with or after the upheaving of these bedrocks. Most of the cone-sha-ped mountainbodies of the strato-volcanoes, therefore, are not entirely com-posed of the accumulations of volcanic rocks erupted from the volcanoes, but of the elevated bedrocks and the veneers of volcanic materials deposited on them. It seems to be of importance for us to reconsider the idea of Buch's “Erhebungstheorie” on this problem.<br> The recent progress in volcano-stratigraphy in Japan elucidates that the topography of some mountains which have apparently been called as “Tho-loide” is not an original shape of volcanoes, but the result of differential erosion.

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