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Shiroumazawa Formation Nakano et al., 2002

• Type locality: Hakubazawa creek, Hakuba city, Kitaazumi county, Nagano prefecture
• Coherent formation
• Jurassic
• Intruded by: Korengeyama Granodiorite

• Lithofacies: Biotite hornfels
• Lithofacies (Protolith): Sandstone, Mudstone
• Lithofacies (Protolith, Minor): Interbedded sandstone and mudstone

• Thickness: 300 m or thicker

• Distribution: Hakubazawa creek - Kanayamasawa? creek - Daisekkei, Hakuba city, Kitaazumi county, Nagano pref.

• Nakano et al. (2002) Geology of the Shiroumadake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 105p. (in Japanese with English abstract 5p.)