Akatsukayama Unit

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Akatsukayama Unit Endo and Yokoyama, 2019

Type locality: Mount Akatsukayam, Kami city, Kochi prefecture
Accretionary complex
Deposition: Jurassic
Accretion: Early Jurassic (U-Pb)
Correlation: Yusugawa Unit, Shogase Unit

Sedimentary facies: Marine
Metamorphic facies: ca. 220 degree C
Lithofacies: Mélange facies
Matrix: Mudstone
Exotic blocks (Crusts, Slabs): Basalt lava, Dolerite, Tuff, Limestone, Sandstone

Lower limit: Thrust fault (Nishimata Unit)

Northern Chichibu Belt (Motoyama, Kochi pref.)
[ Upper ]
/--/--/--/--/-
Akatsukayama Unit
/--/--/--/--/-
Nishimata Unit
/--/--/--/--/-
Kamiananai Unit
/--/--/--/--/-
Akaragi Unit
/--/--/--/--/-
[ Lower ]

Chichibu Belt
[ Upper ]
/--/--/--/--/-
Kurosegawa Belt
/--/--/--/--/-
Northern Chichibu Belt
/--/--/--/--/-
Southern Chichibu Belt
/--/--/--/--/-
[ Lower ]

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

Distribution: Mount Akatsukayam, Kami city, Kochi pref.

Endo and Yokoyama (2019) Geology of the Motoyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 100p. (in Japanese with English abstract 4p.)