On the Radial Arrangement of Joint-prisms and the Fluidal Structure observed in the Hozanji Volcanic Knoll, Nara Pref., Japan

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  • 宝山寺火丘の放射状柱状節理と流理構造
  • ホウザンジ カ オカ ノ ホウシャジョウ チュウジョウ セツリ ト リュウ リ コウゾウ エイブン

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Abstract

The Eruptive-tectonics of the Hozanji Andesite Knoll was worked out., Joint-prisms of the knoll are radiating from the center., Hypersthenes and plagioclases generally tend to be oriented to the vertical direction., From these facts the andesite mass may be presumed to be a volcanic neck in the real sense of the term.,

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