Inugami Granite Porphyry

Inugami Granite Porphyry Miyamura et al., 1976

Intrusive rocks
2 rows of arc-shaped dykes
Cretaceous (ca. 89 Ma, Rb-Sr; ca. 73, 71 Ma, K-Ar; ca. 61, 56 Ma, FT)
Contemporaneous heterotopic facies: Yuzurio Pyroclastics
Intruded in: Ryozensan Formation, Kiwada Formation, Kaiwara Welded Tuff, Yatsuoyama Pyroclastics, Hatasho Quartz Porphyry, Same Welded Tuff

Lithofacies: Granite porphyry

Distribution (Largest dyke, Width): 0.5 - 1.6 km
Distribution (Largest dyke, Length): 7 km
Distribution (Inner arc, Radius): 11 km
Distribution (Outer arc, Radius): 17 km

Biwako caldera
[ Upper ]
~~~~~~~~~~~~~~
Inugami Granite Porphyry
~~~~~~~~~~~~~~
Hatasho Quartz Porphyry
~~~~~~~~~~~~~~
[ Lower ]

Sanyo Belt (Shiga)
[ Upper ]
~~~~~~~~~~~~~~
Biwako caldera
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Inukami dam - Fukadani valley - Kayahara - Hotokera - Fujise - Shakubutsu - Shide - Osugi - Ichinose, Taga city, Inukami county, Shiga pref.; Shorakuji, Kora city, Inukami county, Shiga pref.; Mount Watamukiyama, Hino city, Gamo county, Shiga pref.; Kozuhata - Egenji dam - Ohagi - Inukamigawa river - Kimigahata, Higashiomi city, Shiga pref.; Mount Okushimayama - Okinoshima island, Omihachiman city, Shiga pref.

Harayama et al. (1989) Geology of the Gozaishoyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 145p. (in Japanese with English abstract 6p.)
Ishida et al. (1984) Geology of the Hikone-Seibu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 121p. (in Japanese with English abstract 6p.)
Miyamura et al. (1976) Geology of the Hikonetobu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 49p. (in Japanese with English abstract 6p.)