Upper Basalt Lava Member

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Upper Basalt Lava Member

Volcanic rocks
Early Cretaceous, Valanginian - Hauterivian

Sedimentary facies: Marine
Lithofacies: Alkaline basalt
Lithofacies: Aa lava (17 - 18 flow units)
Lithofacies (Minor): Tuff

Thickness: ca. 400 m
Thickness (A unit): ca. 2 - 140 m
Lower limit: Bottom of the basalt lava-bearing horizon

Yamadori Formation
[ Upper ]
?--?--?--?--?-
Upper Basalt Lava Member
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Lower Andesitic Volcaniclastics Member
~~~~~~~~~~~~~~
[ Lower ]

Yamadori Formation
[ Upper ]
?--?--?--?--?-
Basaltic Volcaniclastics Member
?--?--?--?--?-
[ Lower ]

Karakuwa-Oshika Subbelt
[ Upper ]
?--?--?--?--?-
Yamadori Formation
~~~~~~~~~~~~~~
[ Lower ]

South Kitakami Belt (after Permian)
[ West ]
::::::::::::::
Shizukawa-Hashiura Subbelt
::::::::::::::
Karakuwa-Oshika Subbelt
::::::::::::::
Ofunato Subbelt
::::::::::::::
[ East ]

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

Distribution: Miyagi pref.

Takizawa et al. (1974) Geology of the Kinkasan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 62p. (in Japanese with English abstract 5p.)