Zircon age of granitoids hosting molybdenite-quartz vein deposits in the central Sanin Belt, Southwest Japan

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  • ジルコン年代に見る山陰帯中央部のモリブデン鉱化地域の花崗岩時代論
  • ジルコン ネンダイ ニ ミル サンインタイ チュウオウブ ノ モリブデンコウカ チイキ ノ ハナオカガン ジダイロン

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Description

Rock-forming zircon was dated on the granitoids from the central Sanin Belt by SHRIMP. The granitoids hosting molybdenite-quartz veins have 65.3 and 64.2 Ma. Daito granodiorite batholith, which has been considered older than the nearby host granitoids of molybdenites by the K-Ar ages, is now determined to have a younger age of 56.6 Ma. Another batholith of biotite pink-granite in the east of the studied area has 59.7 Ma, implying that fine-grained granitoids hosting molybdenite-quartz veins were formed prior to the main batholithic intrusions.

Journal

  • Shigen-Chishitsu

    Shigen-Chishitsu 63 (1), 11-14, 2013

    The Society of Resource Geology

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