布計,大口,菱刈,黒仁田,花籠各鉱床の氷長石のK-Ar年代

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  • K-Ar ages for adularia from the Fuke, Okuchi, Hishikari, Kuronita, and Hanakago gold-silver deposits, Kagoshima Prefecture, Japan
  • フケ オオクチ ヒシカリ クロニタ ハナカゴ カク コウショウ ノ ヒョウ

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K-Ar ages for adularia from the Fuke, Okuchi, Hishikari, Kuronita, and Hanakago gold-silver deposits are determined as 1.40±0.19, 1.1±0.5, 0.86±0.12, 1.3±0.7, and 1.1±0.5 Ma, respectively. The results suggest that these deposits in the eastern zone of the Satsuma district were formed in the Pleistocene age. There are gold-silver deposits of latest Miocene to early Pliocene in age in the western zone. On the other hand, the active geothermal systems are observed along the volcanic front in the eastern margin of the district. It is considered, therefore, that the centers of both volcanic activity and mineralization migrated from west to east since the late Miocene age.

収録刊行物

  • 鉱山地質

    鉱山地質 37 (203), 205-213, 1987

    資源地質学会

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