Obatake Granodiorite

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Obatake Granodiorite

Invalid synonym: Obatake Gneissose Granodiorite

Type locality: Obatake, Suooshima city, Yamaguchi prefecture
Plutonic rocks
Late Cretaceus (95.1 Ma, CHIME)
Intruded by: Kibe Granite
Intruded in: Zenitsuboyama Formation

Lithofacies: Hornblende biotite granodiorite, Tonalite
Lithofacies (Minor): Banded gneiss
Structures: Foliated, Enclaves (Banded gneiss)

Older Ryoke Granitoids (Iwakuni-Yanai, Yamaguchi pref.)
[ Young ]
~~~~~~~~~~~~~~
Tengadake Migmatite
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Tajiri Granite
~~~~~~~~~~~~~~
Gamano Granodiorite
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Obatake Granodiorite
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[ Old ]

Ryoke Belt
[ Young ]
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Ryoke Metamorphic Rocks
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Younger Ryoke Granitoids
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Older Ryoke Granitoids
~~~~~~~~~~~~~~
[ Old ]

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

Distribution: Obatake, Suooshima city, Oshima county, Yamaguchi pref.; Arake - Tenjin, Iwakuni city, Yamaguchi pref.

Terabayashi et al. (2017) Jour. Geol. Soc. Japan, vol.123, no.8, pp.599-612 DOI
Higashimoto et al. (1983) Geology of the Iwakuni District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 79p. (in Japanese with English abstract 6p.)