[ Top ] [ Japanese ]

Eboshi Volcanic Rocks

• Volcanic rocks
• Pliocene - Pleistocene (ca. 1 Ma)

• Sedimentary facies (Stage I): Lacustrine
• Sedimentary facies (Stage I): Debris flow deposit
• Lithofacies (Stage II, III): Hypersthene augite andesite lava (7 flow units)
• Lithofacies (Stage I): Diatom-bearing tuffaceous siltstone, Sandstone, Tuff
• Lithofacies (Stage I, Minor): Breccia, Subaqueous tuff brecca, Volcanic conglomerate

• Source: Mount Eboshidake
• Thickness (Stage I): ca. 30 m
• Distribution (East - West): ca. 17 km
• Distribution (South - North): ca. 20 km
• Distribution: 150 km²
• Lower limit: Unconformity (Mugishima Granite, Atagi Formation, Kodaragawa Formation, Kajika Formation, Furumichi Formation, Hida Belt, Hida Gaien Belt, Tetori Group, Yumoriyama-Kanayama Welded Tuff, Yoshidagawa Andesites, Mizore Granite, Kamifurumichi Formation)

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

• Distribution: Mount Eboshidake, Takayama city - Gujo city, Gifu pref.; Shokawa river, Shokawa town, Takayama city, Gifu pref.; Kaibutsu, Hachiman town, Gujo city, Gifu pref.

• Wakita and Koido (1994) Geology of the Gero District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 79p. (in Japanese with English abstract 5p.)
• Kawada et al. (1988) Geology of the Hagiwara District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 82p. (in Japanese with English abstract 10p.)
• Wakita (1984) Geology of the Hachiman District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 89p. (in Japanese with English abstract 6p.)
• Kawada (1982) Geology of the Mikkamachi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 72p. (in Japanese with English abstract 6p.)