Takahama Group

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Takahama Group Nagai, 1963

Type locality: Takahama, Matsuyama city, Ehime prefecture
Volcanic rocks
Miocene
Intruded by: Setouchi Volcanic Rocks

Lithofacies: Gravels

Lower limit: Abut unconformity (Towa Granodiorite)

Takahama Group
[ Upper ]
~~~~~~~~~~~~~~
Iwakoyama Formation
--------------
Taisanji Formation
~~~~~~~~~~~~~~
[ Lower ]

Setouchi Volcanic Rocks (Matsuyama, Ehime pref.)
[ Upper ]
~~~~~~~~~~~~~~
Takahama Group
~~~~~~~~~~~~~~
Gogoshima Group
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Takahama - Gogo island, Matsuyama city, Ehime pref.; Hashirajima island, Iwakuni city, Yamaguchi pref.

Shinjoe and Saito (2017) Jour. Geol. Soc. Japan, vol.123, no.8, pp.571-584 DOI
Matsuura (1997) Geology of the Kurahashi Jima and Hashira Jima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 53p. (in Japanese with English abstract 4p.)