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Japanese igneous orbicular rock localities

60 localities

A list of Japanese orbicular igneous rock localities described in citable papers and books.

Year of description

Location (Prefecture, Synonym, Comments)

Year 1915

Mount Minedera (Ibaraki, Granite), Hirosawa valley (Aichi, Mount Sanage, Granite), Otakazawa (Miyagi, Inusotoba, Shiroishi, Diorite)

Year 1922

Mount Kenashi (Nagano, Kyogi, Shimo-Makuiwa, Granodiorite)

Year 1929

Nakaashi valley (Fukui, Managawa, Ono, Diorite)

Year 1930

Marugami island (Kagawa, Norite)

Year 1938

Mount Kamagahora (Aichi, Granite), Nishi-Hiromi (Aichi, Yasumi, Granite)

Year 1944

Tanneiso seashore (Hokkaido, Oshirabetsu, Gabbro)

See Japanese page for more localities.