岐阜県土岐川沿いに露出する高マグネシウム安山岩岩脈のK-Ar年代  [in Japanese] K-Ar age of high magnesium andesite dikes at the Toki River in Gifu Prefecture, central Japan  [in Japanese]

Abstract

A high-magnesium andesite dike swarm intruding into the Jurassic melange of the Mino-Tamba Belt and the Cretaceous Toki Granite is exposed along the Toki River in central Japan. At the time of intrusion, the direction of the maximum horizontal compressive stress was E-W in this area, as indicated by the predominant direction of the dike swarm. New K-Ar age dating suggests that the intrusive age of the dike swarm is 60-70 Ma. We point out of possibility that high-magnesium andesite magmatism occurred at 60-70 Ma in the eastern part of Inner Zone of Southwest Japan.

Journal

Journal of the Geological Society of Japan   [List of Volumes]

Journal of the Geological Society of Japan 112(10), 616-619, 2006-10-15  [Table of Contents]

The Geological Society of Japan

References:  29

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Codes

  • NII Article ID (NAID) :
    110004837485
  • NII NACSIS-CAT ID (NCID) :
    AN00141768
  • Text Lang :
    JPN
  • Article Type :
    SHO
  • ISSN :
    00167630
  • NDL Article ID :
    8557840
  • NDL Source Classification :
    ZM49(科学技術--地球科学--地質)
  • NDL Call No. :
    Z15-174
  • Databases :
    CJP  NDL  NII-ELS  J-STAGE