U

Ua, Haborogawa Formation
Ua, Kashima Formation
Ua, Lower, Ontake volcano
Ua, Upper, Ontake volcano

Ud
Udagawa Granodiorite
Udatsuyama Formation
Udeyama Sandstone-dominated sandstone-mudstone Member
Ud-f, Haborogawa Formation
Ud, Kashima Formation
Udogasawa Lava
Udoneshima volcano

Ue, Lower
Ue, Upper
Uechigane Pyroclastic Flow Deposit
Ueda Mudflow Deposit
Uejigane Formation
Ue, Kashima Formation
Uemachi Formation
Uemura Formation
Ueno Basaltic Rocks
Ueno Colluvial Deposit
Uenodai Lava
Ueno Formation, Aichi pref.
Ueno Formation, Mie pref.
Ueno Formation, Kyoto pref.
Uenohara Formation
Uenohara Welded Tuff
Uenohata Formation
Uenotaira Interbeds of Volcaniclastic Rocks, Conglomerate and Sandstone Member
Uenotaira Lava
Uenotaira Tuff Breccia
Ueno Tephra
Uenoyama Terrace
Uenshiri Formation
Uenzaru-Pankenuushi Body, eastern
Uenzaru-Pankenuushi Body, western

Uf, Kashima Formation
Uf, Ontake volcano

Ug, Haborogawa Formation
Ug, Kashima Formation
Ug, Ontake volcano
UG
Uguigawa Welded Tuff
Uguisugawa Basalt
Uguisugawa Lava
Uguisugawa Lava Flow
Uguisu Unit

Uh, Haborogawa Formation
Uh, Kashima Formation
Uh, Ontake volcano

Ul, Upper Yezo Group
Ultramafic rocks, Hidaka Plutonic Rocks
Ultramafic Unit
Ultra-Tamba Belt

Unazawa Formation
Unazawa Unit
Unazuki Granite
Unazuki Metamorphic Rocks
Unazuki zone
Unit 1, Aso-4 Pyroclastic Flow Deposits
Unit 1, Daito Formation
Unit 1, Kashima Formation
Unit 1, Kourijima Formation
Unit 1, Kuzu Complex
Unit 1, Mugi Mélange
Unit 1, Naha Formation
Unit 1, Sannomatazawa Pumice Flow Deposit
Unit 2, Aso-4 Pyroclastic Flow Deposits
Unit 2, Daito Formation
Unit 2, Kashima Formation
Unit 2, Kourijima Formation
Unit 2, Kuzu Complex
Unit 2, Mugi Mélange
Unit 2, Naha Formation
Unit 2, Sannomatazawa Pumice Flow Deposit
Unit 2a, Daito Formation
Unit 2b, Daito Formation
Unit 3, Aso-4 Pyroclastic Flow Deposits
Unit 3, Daito Formation
Unit 3, Kashima Formation
Unit 3, Kourijima Formation
Unit 3, Kuzu Complex
Unit 3, Mugi Mélange
Unit 3, Naha Formation
Unit 4, Aso-4 Pyroclastic Flow Deposits
Unit 4, Kourijima Formation
Unit 4, Mugi Mélange
Unit 4, Naha Formation
Unit 5, Mugi Mélange
Unit 6, Mugi Mélange
Unit I, Kuga Group
Unit I, Northern Chichibu Belt
Unit I, Numazawa volcano
Unit I, Southern Chichibu Belt
Unit II, Kuga Group
Unit II, Northern Chichibu Belt
Unit II, Numazawa volcano
Unit II, Southern Chichibu Belt
Unit III, Kuga Group
Unit III, Northern Chichibu Belt
Unit III, Numazawa volcano
Unit III, Southern Chichibu Belt
Unit IV, Numazawa volcano
Unit IV, Southern Chichibu Belt
Unit V, Southern Chichibu Belt
Unit A-1, northern Chichibu Belt
Unit A, Tokachidake volcano
Unit B-1, northern Chichibu Belt
Unit B-2, northern Chichibu Belt
Unit B-3, northern Chichibu Belt
Unit B, Tokachidake volcano
Unit C, Tokachidake volcano
UNK-9
UN-MD2
Unohana Alternation of Sandstone and Shale
Unokawa Complex
Unokawa Formation
Unoke Terrace Deposits
Unoki Metamorphic Rock
Unoki Terrace Deposit
Unzen 1993 Lahar Deposit

UP, Saitama pref.
UP, Kanagawa pref.
Upper Akakuzurezawa Lava
Upper Akan Pumice Flow Deposit
Upper Akazawagawa Lava
Upper Basalt Lava Member
Upper Eboshidake Lava
Upper Fluvial Terrace Deposits, Minauchi
Upper Formation, Maizuru Group
Upper Formation, Mifune Group
Upper Formation, Sasayama Group
Upper Formation, Suzuka Group
Upper granitoids, Hidaka Plutonic Rocks
Upper Haborogawa Formation
Upper Hijochi Formation
Upper Himenoura Subgroup
Upper Hiuchidake Lava
Upper Igarashi Lava
Upper, Ikeda Group
Upper Kanamuro Conglomerate
Upper Kanegasaki Terrace Deposit
Upper Kanomatagawa Lava
Upper Karitasan Lava
Upper Lignite-bearing Member
Upper Mashu-b Tephra Formaiton
Upper Mashu Tephra Formation
Upper Member, Bangamoriyama Formation
Upper Member, Hashikadani Formation
Upper Member, Hayaguchigawa Formation
Upper Member, Kameyama Formation
Upper Member, Kaneyama Formation
Upper Member, Kodomari Formation
Upper Member, Mitsuya Formation
Upper metamorphics, Hidaka Metamorphic Rocks
Upper Mitsumineyama Lava
Upper Mizusawa Lava
Upper Morita Pumice Tuff Member
Uppermost, Ikeda Group
Uppermost Fluvial Terrace Deposits, Minauchi
Upper Most part, Osaka Group
Uppermost part, Sekibutsu Tuff Member
Upper Mudstone Member, Kawaruppu Formation
Upper Myojin Lava
Upper Nakashumbetsu Tephra Formation
Upper Nanakura Tuff Member
Upper Nasodani Lava
Upper Nihonmatsu Tuff
Upper Nojiriko Member
Upper Odaino Lava
Upper Ogahana Lava
Upper Ogane Shell Bed
Upper Otofuke Formation
Upper Oya Formation
Upper part, Akima Formation
Upper part, Osaka Group
Upper part, Sekibutsu Tuff Member
Upper Pumice Tuff Member
Upper pyroclastic flow deposit
Upper Sandstone Unit
Upper section, Mugi Mélange
Upper Senjogahara Lava
Upper sequence, Hidaka Metamorphic Rocks
Upper sheet, Yakuno Ophiolite
Upper Shibakura Lava
Upper Shimotamatagawa Lava
Upper Shingu Sandstone and Conglomerate Member
Upper Taya Formation
Upper Tephra
Upper Teradomari Formation
Upper Unit, Shiobara-Otawara Pyroclastic Flow Deposit
Upper unit, Hata Formation
Upper Wakamiya Formation
Upper Washidake Lava
Upper Yabitsugawa Lava
Upper Yakeyama Lava
Upper Yezo Group
Upper Yuzawa Lava

UUzuhiki Unit