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Goryu Rhyolite

• Volcanic rocks
• Pleistocene
• Intruded by: Kanazawa Granodiorite

• Lithofacies (Upper): Rhyolite welded tuff
• Lithofacies (Lower): Rhyolite lava, Spherulitic rhyolite

• Upper limit: Unconformity (Shirasawatengu Rhyolite)

• Distribution: Mount Goryudake - Mount Jiigatake - Tomisawa creek - Kotsumetazawa creek - Mount Kogumayama, Omachi city, Nagano pref.; Shiratakesawa creek, Hakuba city, Kitaazumi county, Nagano pref.

• Kato et al. (1989) Geology of the Omachi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 111p. (in Japanese with English abstract 7p.)