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Gongen mass

• High P/T metamorphic rocks
• Tectonic blocks of sedimentary rocks originated from accretionary complexes.

• Metamorphic facies: Eclogite facies
• Lithofacies (Protolith): Interbedded pelitic rocks and basic clastic rocks.
• Lithofacies: Quartz eclogite

• Distribution: 1.2 x 0.07 km²
• Upper limit: Thrust fault
• Lower limit: Thrust fault

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

• Distribution: Gongen valley, Niihama city, Ehime pref.

• Sakurai and Takasu (2009) Jour. Geol. Soc. Japan, vol.115, no.3, pp.101-121 DOI