R1
R2
R3
R4
R5
Ra
Raga Conglomerate
Raga Formation
Raichodai Gravel Bed
Raichodai Pyroclastic Fall Deposit
Raidenyama Formation
Raidenyama Unit
, Hokkaido
Raidenyama Unit
, Tokyo
Rakkodake Body
Raku Andesite
Ranpi Member
Ranzan Complex
Raunenai Formation
Rb
Rc
Rebun Group
Rebun-Kabato Belt
Recent Sand Dune
, Tottori Sand Dunes
Red Pumice Tephra
Refureppu Sandstone Member
Reiho Tephra
Reisenji Volcanics Member
Rekifune Volcanic Rocks
Rendaiji Conglomerate Member
Rendaino Terrace Deposit
Renge Belt
Renge-dake Granodiorite
Rengeji Formation
Rengeji Fossil Forest Member
Renge Metamorphic Rocks
Renkoji Formation
Renkoji Interbedded Formation
Rentaki Formation
Rhyodacitic lapilli tuff
Rhyodacitic welded tuff
Rhyolite lava
Rhyolitic lapilli tuff
Rhyolitic tuff
Rifu Formation
Rifu Granitic Rocks
Rikuchu Group
Rikuzenotsuka Formation
Rinsenji Formation
Rishiri volcano
River Terrace Deposits
, Hidagawa river
Rl
Rm
Rodai Formation
Rokkakuzawa Tuff
Rokkoku Tephra
Rokugo Formation
Rokumaebashi Formation
Rokumantai Formation
Rokutozawa Formation
Ronden mass
Ronji Formation
Ronji Mudstone Member
Roppoishi Lavas
Roppongi Formation
Rosse Formation
Rotary Tephra
RP
Rt
Ru
Rubeshibe Pyroclastic Flow Deposit
Rurikei Formation
RW
Ry
Ryodenji Formation
Ryodenji Member
Ryokami Formation
Ryokami Unit
Ryokamiyama Chert Unit
Ryoke Belt
Ryoke Granitoids
, Older
Ryoke Granitoids
, Younger
Ryoke Metamorphic Belt
Ryoke Metamorphic Complex
Ryoke Metamorphic Rocks
Ryori Formation
Ryotsu-oki Group
Ryozen Body
Ryozen Formation
, Fukushima pref.
Ryozen Formation
, Oita pref.
Ryozen Granodiorite
Ryozensan Formation
Ryozen Volcanic Rocks
Ryubasan Andesites
Ryugaike Tephra
Ryugaike Tephra
Ryugamine Lavas
Ryugamine volcanic body
, Nagano pref.
Ryugamine Volcanic Rocks
, Gifu pref.
Ryugamizu Andesite
Ryugashima Dacite
Ryuge Sands and Gravels Member
Ryuhozan Metamorphic Rocks
Ryujin Formation
Ryukawa Formation
Ryukoma Granite
Ryukoma intrusion
Ryukyu Group
Ryuo Lava
Ryuo Volcanic Rocks
Ryusekisan Formation
Ryusenji Formation
, Aichi pref.
Ryusenji Formation
, Gifu pref.
Ryusenzan Group
Ryuso Group
Ryuso Sheet
Ryuso Volcanic Rocks
Ryusozan Formation