Kayanokitoge Basalt Member

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Kayanokitoge Basalt Member Sugiyama and Matsuda, 2014

Type locality: east side of Kayanoki tunnel, Mitsugozawa, Minobu city, Minamikoma county, Yamanashi prefecture
Volcanic rocks
middle Miocene
Correlation: Furusekigawa Formation

Sedimentary facies: Marine
Lithofacies: Tholeiite
Lithofacies: Alkaline basalt
Lithofacies: Augite basalt, Olivine augite basalt lava, Pillow lava, Volcanic breccia, Tuff, Hyaloclastite
Lithofacies (Minor): Mudstone, Interbedded sandstone and mudstone

Thickness: 800 m or thicker
Upper limit: Conformity (Funayama Mudstone Member, Kuonji Formation)

Gotenyama Formation
[ Upper ]
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Funayama Mudstone Member
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Kayanokitoge Basalt Member
?--?--?--?--?-
[ Lower ]

Nishiyatsushiro Group (western Minobu, Yamanashi pref.)
[ Upper ]
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Gotenyama Formation
?--?--?--?--?-
[ Lower ]

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

Distribution: Nakano - Hongo, Nanbu city, Minamikoma county, Yamanashi pref.; Yokonenaka - Aimata - Odafunehara, Minobu city, Minamikoma 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.)
Sugiyama and Matsuda (2014) Geology of the Nanbu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 134p. (in Japanese with English abstract 5p.)