• Banda Basalt
• Bandai 1888 Lahar Deposit
• Bandodani Formation
• Bannaguro Sand Bed
• Banno-sawa Pyroclastic Rock and Lava
• Banshoyama Subunit

• Benten-no-hana Lavas
• Beppo Formation
• Besshi Eclogite unit
• Besshi unit

• Bihoku Group

• Black sand, Shonai sand dunes

• Bodaijiyama Formation
• Bodaijiyama Volcanics
• Boroishi Formation

• Busetsu Granite

• Byobuiwa Lavas
• Byobuiwa volcanic body