Hatto Formation

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Hatto Formation Uemura et al., 1979

High P/T metamorphic rocks
Metamorphism: early Carboniferous - Late Jurassic
Intruded by: Gabbro, Fuchimi Mass

Metamorphic facies: Pumpellyite-Actinolite
Metamorphic facies: Contact (Granitic rocks)
Lithofacies (Upper): Mudstone
Lithofacies (Upper, Minor): Chert, Basalt lava, Tuff
Lithofacies (Lower): Chert
Lithofacies (Lower, Minor): Basalt lava

Thickness: 1,500 - 2,000 m
Distribution (East - West): 20 km
Distribution (South - North): 5 - 7 km
Lower limit: Conformity (Chizu Formation)

Hatto Formation
[ Upper ]
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Mikuragawa Basalt Member
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[ Lower ]

Sangun Metamorphic Belt (Wakasa, Tottori pref.)
[ Upper ]
/--/--/--/--/-
Hatto Formation
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Chizu Formation
/--/--/--/--/-
Shitani Formation
/--/--/--/--/-
[ Lower ]

Sangun Metamorphic Belt (Ohara, Okayama pref.)
[ Upper ]
/--/--/--/--/-
Hatto Formation
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Chizu Formation
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Ohara Formation
/--/--/--/--/-
[ Lower ]

Distribution: Hattogawa river, Wakasa city - Yazu city, Yazu county, Tottori pref.; Myogadani - Fuchimi, Wakasa city, Yazu county, Tottori pref.

Uemura et al. (1979) Geology of the Wakasa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 91p. (in Japanese with English abstract 8p.)