[ Top ] [ Japanese ]

Kaifukiyama Dacite Muraoka and Hase, 1990

• Type locality: Nashikizawa creek - Mount Kaifuki, Kuroishi city, Aomori prefecture
• Volcanic rocks
• Miocene
• Intruded in: Nuruyu Formation
• Correlation: Jogakura Dacite

• Sedimentary facies: Dyke, Stock
• Sedimentary facies (Minor): Lava flow
• Lithofacies: Dacite

• Upper limit: Unconformity (Obirakiyama Pyroclastic Flow Deposit)

• Distribution: Nashikizawa creek - Mount Kaifuki, Kuroishi city, Aomori pref.; Aseishi river, Ochiai - Lake Nijinoko, Kuroishi city, Aomori pref.; Nakano river, Kuroishi city, Aomori pref.

• Muraoka and Hase (1990) Geology of the Kuroishi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 124p. (in Japanese with English abstract 8p.)