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Hatasho Quartz Porphyry

• Intrusive rocks
• Cretaceous (ca. 64 Ma, FT)
• Intruded by: Inugami Granite Porphyry

• Lithofacies: Quartz porphyry

• Distribution (East body, East - West): ca. 1 km
• Distribution (East body, South - North): 4 km
• Distribution (West body, East - West): 3 km
• Distribution (West body, South - North): 10 km
• Upper limit: Unconformity (Fukadani Debris Avalanche Deposit, Yatsuoyama Pyroclastics)

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

• Distribution: Saimyoji, Taga city, Inukami county, Shiga pref.; Yokitogi, Aisho city, Echi county, Shiga pref.; Usogawa dam - Ohagi, Higashiomi 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.)