• 480m-yama volcano

• IV Bed, Oya Formation
• 4th Pyroclastic Cone Deposit
• 4th stage, Sanbe volcano
• 4th stage products, Naeba volcano
• 4th Terrace Deposit, Kakuda
• 4th Terrace Deposits, Mount Gozaishoyama
• IV Zone, Kitakami mountains plutonic rocks