[ Top ] [ Japanese ]

Horyo-kita Lava Kudo, 2005

• Type locality: Komasu creek, Towada city, Aomori prefecture
• Coherent formation
• Pliocene (1.8 Ma; 1.82, 1.79 Ma, K-Ar)

• Lithofacies: Basalt, Basaltic andesite
• Lithofacies: Lava (A few sheets)

• Thickness: ca. 150 m
• Thickness (A sheet): 4 m or thicker
• Upper limit: Unconformity (Hakkoda 2nd-stage Pyroclastic Flow Deposit)
• Lower limit: Unconformity (Komasuzawa Formation)

• Distribution: Komasu creek, Towada city, Aomori pref.

• Kudo (2005) Geology of the Towada District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 79p. (in Japanese with English abstract 3p.)