1982•The Journal of the Japanese Association of Mineralogists Petrologists and Economic GeologistsOpen access
Notes on petrography and rock-forming mineralogy (13). Detrital garnets from pelitic Sanbagawa schists in the Bessi area, central Shikoku.
Toshio Higashino, Akira Takasu
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Abstract
Detrital garnets were found from some pelitic schists in the garnet, albite-biotite and oligoclase-biotite zones of the Sanbagawa belt in the Bessi area, central Shikoku. They are subrounded to rounded, and are always armoured by the garnet formed at the Sanbagawa metamorphism. There is a distinct chemical discontinuity at the boundary between the detrital and Sanbagawa garnets, and some of the former have composition exotic to the pelitic Sanbagawa schists.
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