Mikabu Belt

A zone composed of the bottom unit of Northern Chichibu Belt and Mikabu Unit.

It was proposed as a zone subjected to higher pressure than Sanbagawa Metamorphic Rocks and associated with aragonite and lawsonite.

Accretionary complex
Deposition: Carboniferous - Jurassic
Accretion: Jurassic

Sedimentary facies: Marine

Upper limit: Thrust fault (Northern Chichibu Belt)
Lower limit: Thrust fault (Sanbagawa Metamorphic Rocks)

Kanto region
[ Upper ]
/--/--/--/--/-
Kashiwagi Unit
/--/--/--/--/-
Mikabu Unit
/--/--/--/--/-
[ Lower ]

Motoyama, Kochi pref.
[ Upper ]
/--/--/--/--/-
Akaragi Unit
/--/--/--/--/-
Mikabu Unit
/--/--/--/--/-
[ Lower ]

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

Distribution: Kanto - Akaishi mountains - Kii peninsula, southern Shikoku - southern Kyushu - Okinawa

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.)