Uchiko Unit

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Uchiko Unit Banno, 2010

High P/T metamorphic rocks
Protolith: Late Cretaceous (ca. 95 - 90 Ma, K-Ar)
Metamorphism: Late Cretaceous (ca. 95 - 90 Ma, K-Ar)
Correlation: upper Minawa Unit

Metamorphic facies: Chlorite zone
Metamorphic facies: Pumpellyite-Actinolite facies
Lithofacies: Pelitic schist
Lithofacies (Upper, Minor): Mafic schist, Serpentinite
Lithofacies (Middle, Minor): Siliceous schist
Lithofacies (Lower, Minor): Psammitic schist

Thickness: 1,650 m or thicker
Distribution (Width): ca. 3 km

Sanbagawa Metamorphic Rocks (western Shikoku)
[ Upper ]
/--/--/--/--/-
Hijikawa Unit
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Mikabu Unit
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Ozu Unit
/--/--/--/--/-
Uchiko Unit
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Kikitsu Unit
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Iyo Unit
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[ Lower ]

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

Distribution: Kajiyadani - Mount Kosanjiyama - Gotoge pass, Ozu city, Ehime pref.; Mount Kurakakeyama, Yawatahama city, Ehime pref.

Miyazaki (2024) Geology of the Iyo-Nagahama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 155p. (in Japanese with English abstract 5p.)