[ Top ] [ Japanese ]

Tanakami Granite Collaborative Research Group for the Granites around Lake Biwa, 1982 (Photo)

Invalid synonym: Mikumo Granite

• Type locality: Tanakami, Otsu city, Shiga prefecture
• Plutonic rocks
• Late Cretaceous (74.7 - 67.9 Ma, K-Ar; 82 - 70 Ma, Rb-Sr)
• Intruded in: Shigaraki Granite, Kannonji Granodiorite, Tamba Belt
• Intruded by: Rhyolite dikes, Granite porphyry dikes, Granodiorite dikes

• Lithofacies: Ilmenite series
• Lithofacies: Biotite granite
• Lithofacies (Roof facies): Fine-grained biotite granite
• Structures: Joints

• Distribution (East - West): ca. 20 km
• Distribution (South - North): ca. 8 km
• Upper limit: Unconformity (Takamatsu Gravels Member)

------ Transitional, ~~~~~~ Intrusive, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Tanakami, Otsu city, Shiga pref.; Kusatsu city, Shiga pref.; Shigaraki town, Koka city, Shiga pref.; Kosei town - Ishibe town, Konan city, Shiga pref.; Ritto city, Shiga pref.

• Kiji et al. (2019) Jour. Geol. Soc. Japan, vol.125, no.1, pp.107-118 DOI
• Wakita et al. (2013) Geology of the Kyoto-Tonambu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 124p. (in Japanese with English abstract 3p.)
• Kohno et al. (2008) Jour. Geol. Soc. Japan, vol.114, no.9, pp.435-446 DOI
• Collaborative Research Group for the Granites around Lake Biwa (2008) Jour. Geol. Soc. Japan, vol.114, no.2, pp.53-69 DOI
• Nakano et al. (2003) Geology of the Minakuchi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 83p. (in Japanese with English abstract 3p.)
• Saito and Sawada (2000) Geology of the Yokoyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 126p. (in Japanese with English abstract 5p.)