[ Top ] [ Japanese ]

Tsukimibashi Volcaniclastic Member (Matsuda, 1958) Ozaki and Sugiyama, 2018

Invalid synonym: Kajikazawa Formation

• Type locality: western shore of Fujigawa river, Tsukimi bridge, Nishijima, Minobu city, Minamikoma county, Yamanashi prefecture
• Volcanic rocks
• middle Miocene
• Contemporaneous heterotopic facies: Kamiisshiki Volcanic Breccia Member
• Correlation: Kurosawa Basalt and Mudstone Member?

• Sedimentary facies: Marine
• Sedimentary facies: Volcanic products, Deep sea sediments
• Depth of water: Abbyssal (shallower than CCD)
• Lithofacies: Andesite - Basalt volcanic breccia, Tuff breccia, Tuff, Lava
• Lithofacies (Minor): Volcanic conglomerate, Tuffaceous sandstone, Mudstone, Pillow lava

• Thickness: 700 - 750 m or thicker
• Upper limit: Unconformity (Teuchizawa Breccia Member, Yogosawa Conglomerate Member)
• Lower limit: Conformity (Wadaira Tuff Member, Kanzaka Mudstone Member)

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Nishijima - Teuchizawa, Minobu city, Minamikoma county, Yamanashi pref.; Kusuho, Ichikawamisato city, Nishiyatsushiro county, Yamanashi pref.

• Ozaki and Sugiyama (2018) Geology of the Minobu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 169p. (in Japanese with English abstract 7p.)