Kamiiwashita Lava

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Kamiiwashita Lava

Type locality: Nishibyodogawa river, Kamiiwashita, Yamanashi city, Yamanashi prefecture
Volcanic rocks
late Miocene (6.0 Ma, K-Ar)

Sedimentary facies: under water
Lithofacies: Andesite lava, Hyaloclastite

Thickness: 150 m or thicker
Upper limit: Conformity (Odaira Welded Tuff)
Lower limit: Conformity (Nishibyodogawa Mudstone, Tokuwa Volcanic Breccia)

Konarayama Volcanic Rock
[ Upper ]
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Odaira Welded Tuff
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Kamiiwashita Lava
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Tokuwa Volcanic Breccia
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Nishibyodogawa Mudstone
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Baba Welded Tuff
~~~~~~~~~~~~~~
[ Lower ]

Higashi-Yamanashi Volcano-Plutonic Complex
[ Young ]
~~~~~~~~~~~~~~
Kogarasu Granodiorite
~~~~~~~~~~~~~~
Konarayama Volcanic Rock
~~~~~~~~~~~~~~
[ Old ]

------ Transitional, ~~~~~~ Intrusive, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

Distribution: Nishibyodogawa river, Kamiiwashita, Yamanashi city, Yamanashi pref.; Ikedori - Mount Ogarasuyama - Mount Tenguyama, Yamanashi city, Yamanashi pref.

Mimura et al. (1984) Geology of the Mitake-Shosenkyo District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 61p. (in Japanese with English abstract 4p.)