Hazumiminami Formation

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Hazumiminami Formation Kobayashi, 1979

Invalid synonym: Hazumiminami Tectonic Mélange

Medium-pressure type metamorphic rocks
Metamorphism: Early Jurassic (195, 191 Ma, K-Ar; 186 Ma, Rb-Sr)
Intruded by: Felsic dikes, Andesite dikes, Yakami body

Metamorphic facies: Pumpellyite-Actinolite facies, Blueschist facies
Lithofacies: Pelitic schist
Lithofacies (Minor): Mafic schist, Quartz schist, Serpentinite, Psammitic schist
Lithofacies (Protolith, Minor): Basaltic volcanic sediments, Chert, Dunite

Distribution (East - West): ca. 10 km
Distribution (South - North): ca. 8 km
Upper limit: Unconformity (Tsunozu Formation)

Suo Belt (Shimane pref.)
[ East ]
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Hazumiminami Formation
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Meta-mafic rocks
/--/--/--/--/-
Tanoharagawa Formation
/--/--/--/--/-
[ West ]

Sangun Metamorphic Belt
[ Young ]
/--/--/--/--/-
Renge Belt
/--/--/--/--/-
Suo Belt
/--/--/--/--/-
[ Old ]

Distribution: Matsukawa town - Hazumi town - Sakurae town - Gonokawa river, Gotsu city, Shimane pref.

Kano et al. (2001) Geology of the Yunotsu and Gotsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 129p. (in Japanese with English abstract 5p.)