• Ia
  • I Alternation of Sandstone and Mudstone
  • Ib
  • Ibaragawa Formation
  • Ibaragi Granitic Complex
  • Ibaraki Clay Formation
  • Ibaraki Formation
  • Ibaraki Lavas
  • Ibohara Formation
  • Ibonai Terrace Deposit
  • Ibora Tephra
  • Ibukiyama Limestone Formation
  • Ic
  • IC
  • Icchoda Formation
  • Icchoda Member
  • Ichiba Sandstone and Siltstone Member
  • Ichibe Member
  • Ichibe Tephra
  • Ichibu Formation
  • Ichida Granite
  • Ichido Mudstone and Sandstone Member
  • Ichihara I Terrace Deposits
  • Ichihara II Terrace Deposits
  • Ichihara III Terrace Deposits
  • Ichihasama Pumice
  • Ichiino Clays Member
  • Ichijiku Formation
  • Ichijo Andesite
  • Ichijuku Formation
  • Ichikawadaimon Formation
  • Ichiki Acidic Volcanic Rocks
  • Ichinanbayama Lava
  • Ichinohara Formation
  • Ichinohara Tephra
  • Ichinohe Granite
  • Ichinohe Pluton
  • Ichinoike volcano
  • Ichinokawa Formation
  • Ichinokoshi Lavas
  • Ichinomata Basalt
  • Ichinomatakawa Lavas
  • Ichinomatazawa Basalt Member
  • Ichinomegata maar
  • Ichinomiya Gravel Bed
  • Ichinonohara Tuff Member
  • Ichinono Member
  • Ichinosaka Lava
  • Ichinosaka Tuff
  • Ichinosawa Body
  • Ichinosawa Formation
  • Ichinosawa Granite
  • Ichinosawa Pyroclastic Flow Deposit
  • Ichinosawa Tephra
  • Ichinosawa Unit
  • Ichinosawa Welded Tuff
  • Ichinose Formation, Iiyama, Nagano pref.
  • Ichinose Formation, Matsumoto, Nagano pref.
  • Ichinose Formation, Yamanashi pref.
  • Ichinose Formation, Fukui pref.
  • Ichinose Formation, Gifu pref.
  • Ichinose Group
  • Ichinose Member
  • Ichinose Rhyolite
  • Ichinose Sandstone and Conglomerate Facies
  • Ichinose Sandstone and Conglomerate Member
  • Ichino Tephra
  • Ichinotani Formation
  • Ichinotogawa Pyroclastic Flow Deposit
  • Ichinowatari Formation
  • Ichinoya Formation
  • Ichio Formation
  • Ichiriboki olistostrome
  • Ichirozawa Lava
  • Ichishi Group
  • Idaira Formation
  • Idaka Member
  • Idani Formation
  • Ida Tephra
  • Ida volcano
  • Idekami Formation
  • Ideminami Granite
  • Idodake Lava
  • Idodake Pyroclastic Rocks
  • Idodakesancho Explosion Breccia
  • Idodakesancho lava dome
  • Idoirisawa Member
  • Idonnappu Belt
  • Idonnappu Zone
  • Idozawa Formation, Gunma pref., Miocene
  • Idosawa Formation, Gunma pref., Triassic
  • Idosawa Formation, Tokyo
  • Ieda Group
  • Iedokoro Sandstone Member
  • Ieki Formation
  • Ieki Sandstone and Mudstone Member
  • Ie Unit
  • Ieyama Formation
  • Iga-Aburahi Formation
  • Iga Formation
  • Iga Member
  • Igami Formation
  • Igarashi Lava I
  • Igarashi Lava II
  • Igarashi Lava III
  • Igarashi Lava IV
  • Igarashi Lava V
  • Igarashi Lava VI
  • Igarashi Lava Dome
  • Igarashi Pyroclastic Flow Deposit
  • Igarashisekishoku Lava
  • Iga Sands and Gravels Member
  • Igo Mudstone
  • IH
  • Ihara Group
  • Iheya Unit
  • Ihoridanitoge Conglomerate
  • Ihoridanitoge Conglomerate Member
  • Iida Diatomaceous Mudstone Formation
  • Iida Formation, Ishikawa pref.
  • Iida Formation, Chichibu city, Saitama pref.
  • Iida Formation, Ogawa city, Saitama pref.
  • Iidesan Granodiorite
  • Iigamori Lava
  • Iijichuo Lava Dome
  • Iijima Tuff
  • Iiji volcano
  • Iikura Conglomerate Member
  • Iimori Conglomerate Member
  • Iimori Formation
  • Iimori Conglomerate Member
  • Iimori Unit
  • Iimoriyama Lava
  • Iimoriyama parasitic cone
  • Iimuro Formation
  • Iinoya Formation, upper
  • Iinoya Formation, middle
  • Iinoya Formation, lower
  • Iinoyama Member
  • Iitomi Formation
  • Iizawa Formation
  • Iizuka Diatomaceous Mudstone Formation
  • Iizuka Formation
  • Iizume Formation, upper
  • Iizume Formation, lower
  • Iizuna Basalts
  • Iizuna Formation
  • Iizuna Lava
  • Iizuna proper strato-volcanic products
  • Iizuna Pyroclastic Flow Deposit
  • Iizuna Tuff
  • Iizuna Volcanic Ash
  • Iizuna Volcanic-Fan Deposit
  • Iizuna volcano
  • Iizuna volcano caldera Lacustrine Deposit
  • Iizunayama Lava, Iizuna city
  • Iizunayama Lava, Takayama city
  • Ij
  • Ijika Complex
  • Ijimi Granite
  • Ijiri Andesite
  • Ijiri caldera
  • Ij-MO
  • IjT
  • Ik
  • Ikadaba Terrace Deposit
  • Ikadachi II
  • Ikadachi Formation
  • Ikaga Formation
  • Ikarigaseki caldera
  • Ikarigaseki Formation
  • Ikari Sandstone Member
  • Ikaruga Member
  • Ikb-1
  • Ikeda Basalt
  • Ikeda Formation
  • Ikego Formation
  • Ikeda Group
  • Ikego Pyroclastic Formation
  • Ikejirigawa Debris Avalanche Deposit
  • Ikejirigawa Mudflow
  • Ikenohara Coarse Sandstone Member
  • Ikenohara Formation
  • Ikenosawagawa Lava
  • Ikenosawa Lava
  • Ikenotaira-bokujo Lavas
  • Ikenotaira Lava
  • Ikenotaira pyroclastic cone
  • Ikenouchi I Tephra
  • Ikenouchi II Tephra
  • Ikenouchi III Tephra
  • Ikenouchi Formation
  • Ikenoue Formation
  • Ikenowaki Tephra
  • Ikenowaki Terrace Deposits
  • Iketsuki Tuff
  • Ikezuki Tuff
  • Ikime Formation
  • Ikobe Gravel Member
  • Ikobe Silt Member
  • Ikokuma Agglomerate Member
  • Ikokuma Andesites
  • Ikokuma Formation
  • Ikomahigashiyama Formation
  • Ikomayama Gabbro
  • Ikudo Formation
  • Ikumo Caldera
  • Ikumo cauldron
  • Ikumo Formation
  • Ikuno Group
  • Ikunoura Formation
  • Ikuridani Formation
  • Ikuridani Group
  • Ikushunbetsu Formation
  • Ikuta Formation
  • Ikuta Granite
  • Imabetsu Andesites
  • Imabetsu Volcanic Rocks
  • Imaichi Pyroclastic Flow Deposit
  • Imaidani Group
  • Imai Formation
  • Imai Gravels
  • Imaizumi Formation
  • Imaizumigawa Formation
  • Imaizumi Sandstone and Conglomerate Member
  • Imajo Complex
  • Imajo Formation
  • Imajuku Formation
  • Imajuku Sandstone Member
  • Imakuma I Tephra
  • Imakuma Tephra
  • Imakuzure Formation
  • Imasaki Lava
  • Imaura Formation
  • Imaura Group
  • Imizu Formation
  • Imogadaira Formation
  • Imogawa Member
  • Imogawa Tuff
  • Imokubo Conglomerate Formation
  • Imokubo Formation
  • Imokubo Gravel Formation
  • Imono eclogite
  • Imono mass
  • Imosawagawa Formation
  • Imoya Body
  • Imozu Conglomerate Member
  • Inabayama Basalt
  • Inabayama Gravel Bed
  • Inada Granite
  • Ina Formation
  • Inagatani Gravel Bed
  • Inagawa Complex
  • Inagawa Granite
  • Inagawa Granodiorite
  • Inagawa Group
  • Inagawa Sandstone Member
  • Inagi Formation
  • Inagobokujo Lava
  • Inagodake Lavas
  • Inagodake Pyroclastic Flow Deposit
  • Inagoe Formation
  • Ina Group
  • Inaguratoge Andesite
  • Inagu Tephra
  • Inai Group
  • Inakozawa Formation
  • Inakozawa Mudstone Formation
  • Inakuradake Lava
  • Inambajima volcano
  • Inami Formation
  • Inami Group
  • Inamura Andesite
  • Inamura Formation
  • Inamuragadake Conglomerate
  • Inaritai Lacustrine Deposit
  • Inarizaka Loam
  • Inasa Member
  • Ina Sandstone Member
  • Inase Formation
  • Inashibetsu Tuff
  • Inashibetsu Tuff Member
  • Inatori Mudflow Deposit
  • Ina Tuff Breccia Member
  • Inawashiro Calderas
  • Inbi stage volcanic rocks
  • Ine Andesite
  • Ine Group
  • Inekoki Formation
  • Initial stage, Rishiri volcano
  • Initial volcanic edifice
  • In-Kt
  • In-KT
  • In-KTa
  • Innai Tuff
  • Innai Tuff Member
  • In-Ny
  • Inogama Formation
  • Inoguchi Member
  • Inohana Tonalite Porphyry
  • Inotani Alternation Member
  • Inotani Alternation of Sandstone and Shale Member
  • Inotani Formation
  • Inou Volcanic Ash
  • Inp
  • InP
  • Intrusive pyroclastic rocks, Kumano Acidic Rocks
  • Intrusive Pyroclastic Rock, Ikumo caldera
  • Inubo Group
  • Inubozaki Formation
  • Inugami Granite Porphyry
  • Inugasako Breccia Member
  • Inugashirayama Complex
  • Inuidani Member
  • Inuidani Tephra
  • Inui Group
  • Inukura Debris Flow Deposit
  • Inukura Lava
  • Inukura volcano
  • Inukurayama Lava
  • Inumodorikyo Complex
  • Io
  • Iodake Crystalline Schist
  • Iodakekabu Lava
  • Iodakejobu Lava
  • Iodake Lava, Aomori pref.
  • Iodake Lavas, Aomori pref.
  • Iodake Volcanic Rocks, Nagano pref.
  • Iodake Welded Tuff
  • Iogawa Lava
  • Ioridanitoge Formation
  • Iori Formation
  • Iori Granodiorite
  • Iozawa Metasomatic Rocks
  • Iozen Formation
  • Iozumi Tuff
  • Ippongihara Debris Avalanche Deposit
  • Ippongi Lapilli Member
  • Ipponmatsuyama Formation
  • Ir1 Pyroclastic Flow Deposit
  • Irahara Granodiorite
  • Irakawa Formation
  • Irawara Granodiorite
  • Iratsu mass
  • Irg
  • Iriai Formation
  • Irieno Formation
  • Iridogawa Lava
  • Iriishikura? Formation
  • Iriki Pyroxene Andesite
  • Irimazawa Member
  • Irimizuzawa Green Tuff
  • Irinotaira Formation
  • Iriomote Formation
  • Irisawa Formation
  • Irishiken Granite
  • Irishiken Granodiorites
  • Irisugaya Formation
  • Iritamo Rhyolites
  • Iritono mass
  • Iriyamagawa Tuff
  • Iriyama Sandstone Facies
  • Iriyama Sandstone Member
  • Iriyamazawa caldera
  • Iriyamazawa Formation
  • Iriyamazawa Tuff
  • Irohazaka Welded Tuff
  • Irozaki Andesite
  • Irozaki Tuff Breccia Formation
  • Iruma Formation, Saitama pref.
  • Iruma Formation, Shimane pref.
  • Is
  • IS-1
  • IS-2
  • Isabu Formation
  • Isaki Welded Tuff
  • Isatomae Formation
  • Isawagawa Fan Deposit
  • Isawagawa Formation
  • Isbt
  • Isegi Sandstone and Mudstone Member
  • Isei Lava
  • Isekambe Formation
  • Isekanbe Member
  • Isekigawa I Tephra
  • Isekigawa II Tephra
  • Isekigawa III Tephra
  • Ise Metamorphic Rocks
  • Iseyama Formation
  • Isg-c
  • Isg-e
  • Isg-f
  • Isg-g
  • Isg-h
  • Ishiai Member
  • Ishiba Formation
  • Ishibatake Conglomerate Member
  • Ishida Formation, Aichi pref.
  • Ishida Formation, Shiga pref.
  • Ishidani Formation
  • Ishido Formation, Saitama pref.
  • Ishido Formation, Chiba pref.
  • Ishido Gravels Member
  • Ishido Group
  • Ishido Siltstone Formation
  • Ishifune Formation
  • Ishifutagarisawa Formation
  • Ishifutagarisawa Mudstone Member
  • Ishigaki Formation
  • Ishigami Formation, Saitama pref.
  • Ishigami Formation, Tokyo
  • Ishigami Terrace Deposit
  • Ishigamiyama Tuff
  • Ishigami zone
  • Ishigamori Dacite
  • Ishigure Formation
  • Ishigurekitayama Tephra
  • Ishigure Tephra
  • Ishihagegawa Lava
  • Ishihagegawa Volcanic Rocks
  • Ishiji Alternation
  • Ishiji Sandstone
  • Ishiji Sandstone and Mudstone Alternation
  • Ishikari Dune Sand
  • Ishikari Group
  • Isihkawa mass
  • Ishiki Formation, Shizuoka pref.
  • Ishiki Formation, Aichi pref.
  • Ishikiriba Member
  • Ishikiritoge Gravel
  • Ishikiri Tonalite
  • Ishikiriyama Granodiorite
  • Ishikoshi Andesite
  • Ishikoyama Granite
  • Ishikura Formation
  • Ishikurayama Formation
  • Ishimaki Formation
  • Ishimakisan Unit
  • Ishimakuri Member
  • Ishimoriyama Tuff Breccia Member
  • Ishinazaka Terrace Deposit
  • Ishiuchi Member
  • Ishiwaritoge Formation
  • Ishiwariyama Body
  • Ishiyakushi Formation
  • Ishiyama I Tephra
  • Ishiyama II Tephra
  • Ishiyama Gravels Member
  • Ishiyama Lava
  • Ishiyama Lava Dome
  • Ishiyama Limestone
  • Ishiyama Member
  • Ishiyama Sandstone Member
  • Ishizaka Formation
  • Ishizaka Rhyolite
  • Ishizaka rhyolitic lava
  • Ishizaka Tuff
  • Ishizaki Formation
  • Ishizawagawa Formation
  • Ishizuchi Group
  • Ishizuchi Igneous Rocks
  • Isoai Formation
  • Isobe Member
  • Isobe Tephra
  • Isodayama Formation
  • Isojirozawa Shale Formation
  • Isokusa Formation
  • Isomatsu Formation
  • Isondani Conglomerate
  • Isoo I Tephra
  • Isoo II Tephra
  • Iso Pyroclastic Flow Deposit
  • Iso Tuffaceous Sandstone Member
  • Isoura Formation
  • Issaikyo Unit
  • Issaikyoyama volcano
  • Isso Conglomerate Member
  • Isso Formation
  • Isozaki Formation
  • Issha Tephra
  • Isshiki Tuff
  • Isumi 1 Terrace Deposits
  • Isumi 1 (Yoshifu) Terrace Deposits
  • Isumi 2 Terrace Deposits
  • Isumi 3 Terrace Deposits
  • Isumigawa Shell Bed
  • Isuzu Group
  • Itabashi Formation
  • Itabatake Formation
  • Itado Andesite
  • Itadome Formation
  • Itadori Mass
  • Itahana Formation
  • Itami Formation, Shizuoka pref.
  • Itami Formation, Hyogo pref.
  • Itanakogawa Formation
  • Itanami Formation
  • Itanami Group
  • Itaoroshitoge Formation
  • Itaoroshitoge Siltstone Member
  • Itaoroshitoge Tuff and Shale Member
  • Itaya Alternation Member
  • Itaya calderar
  • Itaya Formation (Yamagata)
  • Itaya Formation (Toyama)
  • Itayama Tuff
  • Itaya Member
  • Itaya Sandstone and Siltstone Member
  • Itaya Tuff
  • Itazawa Lahar deposit
  • Itchoda Formation
  • Itoi Pumice Flow Deposit
  • Itokaya Lava
  • Itokaya Pyroclastic Flow Deposit
  • Itoman Formation
  • Itonashi volcano
  • Itoo Formation
  • Ito Pumice Flow Deposit
  • Ito Pyroclastic Flow Deposit
  • Itoshima Granodiorite
  • Itoshiro Group, Hida Gaien Belt
  • Itoshiro Subgroup, Tetori Group
  • Itsukaichimachi Group
  • Itsukamachi Sandstone
  • Itsuki Formation
  • Itsuki Shale Member
  • Ittaizan Formation
  • Ittori Formation
  • Itukamati Muddy Sands
  • Itukamati Sandstone Member
  • Iu Formation
  • IW1
  • IW2
  • Iwabuchi Formation, Lower
  • Iwabuchi Formation, Upper
  • Iwade Formation, Tochigi pref.
  • Iwade Formation, Wakayama pref.
  • Iwadeyama Pumice
  • Iwadono Formation
  • Iwadonozawa Formation
  • Iwagamiyama Formation
  • Iwagoyama Granite
  • Iwahashiyama Granite
  • Iwahata Limestone Member
  • Iwahatayama Lava
  • Iwaibukuro Formation
  • Iwaidani Lava
  • Iwaidani Mylonite
  • Iwai Formation
  • Iwaine Formation
  • Iwaine Group
  • Iwai Pyroclastic Member
  • Iwaisawa Lava
  • Iwaizaki Formation
  • Iwaizaki Limestone
  • Iwaizumi Belt
  • Iwaizumi Belt
  • Iwaizumi Formation
  • Iwaizumi Group
  • Iwajuku Terrace Deposit
  • Iwaki Formation, Shiramizu Group
  • Iwaki Formation, Chichibu Belt
  • Iwakisan Volcaniclastic Rocks
  • Iwakisan volcano
  • Iwaki Terrace Deposits
  • Iwakokekotani Lavas
  • Iwakoyama Formation
  • Iwakuni Granite
  • Iwakura Formation, Fukushima pref.
  • Iwakura Formation, Mie pref.
  • Iwakura Lava
  • Iwakura Pyroclastic Flow Deposit
  • Iwakurayama Body
  • Iwakurayama Complex
  • Iwakurayama Rhyolite
  • Iwamatsu Formation
  • Iwami Formation
  • Iwami Granite
  • Iwami Group
  • Iwami Rhyolites and Dacites
  • Iwamizawa Formation
  • Iwamori Tephra
  • Iwamura Group
  • Iwamuro I Tephra
  • Iwamuro II Tephra
  • Iwamuro Clays Member
  • Iwamuro Formation
  • Iwamuro Sands Member
  • Iwamurotoho Ultramafic Rocks
  • Iwanamesawa Mudstone Member
  • Iwane Rhyolite
  • Iwano Formation
  • Iwanosawa Formation
  • Iwaobashi Sandstone Member
  • Iwaodaki Tuffaceous Sandstone Member
  • Iwao Formation
  • Iwaoji Formation
  • Iwappara Lava
  • Iwasaka Formation
  • Iwase Formation
  • Iwase Granodiorite Porphyry
  • Iwase Tuff
  • Iwashimizu Complex
  • Iwashimizu Conglomerate Formation
  • Iwashimizu Formation
  • Iwashimizu Lava
  • Iwashita Andesites
  • Iwatahara Gravel Bed
  • Iwatake Glaciolacustrine Deposits
  • Iwatake stage
  • Iwatakeyama Welded Tuff
  • Iwataki Welded Tuff
  • Iwata Loam
  • Iwatate Basalt
  • Iwate-Fudotai Tephra
  • Iwate-Kariya Scoria
  • Iwate-Oide Scoria
  • Iwate-Okawakaitaku Scoria
  • Iwate-Shirishida Scoria
  • Iwate-Suko Scoria
  • Iwate volcanic group
  • Iwate volcano
  • Iwatoyama Formation
  • Iwatsubodani Formation
  • Iwatsubodani Lava
  • Iwatsubodani Pyroclastic Rocks
  • Iwatsubodanigentou Lava
  • Iwatsuboyama Lava
  • Iwatsuboyama volcano
  • Iwatsuboyama Welded Tuff
  • Iwaya Formation, Akita pref.
  • Iwaya Formation, Aichi pref.
  • Iwaya Formation, Hyogo pref.
  • Iwaya Granite
  • Iwayakan'non stratovolcano
  • Iwayakannon Lava
  • Iwayama Lavas
  • Iwayama Tephra
  • Iwayatani Member
  • Iw-Fd Tephra
  • Iw-KS Tephra
  • Iw-OdS Tephra
  • Iw-OkS Tephra
  • Iw-ph1 Tephra
  • Iw-ph2 Tephra
  • Iw-ph3 Tephra
  • Iw-ph4 Tephra
  • Iw-ph5 Tephra
  • Iw-ph6 Tephra
  • Iw-ph7 Tephra
  • Iw-ph8 Tephra
  • Iw-ph9 Tephra
  • Iw-ph10 Tephra
  • Iw-ph11 Tephra
  • Iw-ph12 Tephra
  • Iw-SS Tephra
  • Iw-SuS Tephra
  • Iw-W6a Tephra
  • Iw-W6b Tephra
  • Iw-W6c Tephra
  • Iw-W6d Tephra
  • Iw-W7a Tephra
  • Iw-W8a Tephra
  • Iw-W8b Tephra
  • Iw-W9 Tephra
  • Iy
  • Iz
  • Iz1 Pyroclastic Flow Deposit
  • Iz2 Pyroclastic Flow Deposit
  • Izaki Olistolith
  • Izaku Pyroclastic Flow Deposit
  • Izeki Formation
  • IZ-FM
  • Iz-Kt
  • Iz-KTa
  • Iz-Ny
  • Izumi Formation
  • Izumigatake volcano
  • Izumi Group, Kyoto pref.
  • Izumi Group, Osaka pref.
  • Izumikawa Formation
  • Izumi Terrace Deposits
  • Izumiyatsu Member
  • Izumiyatsu Mollusca Belt
  • Izumo Group
  • Izu-Oshima 2013 Lahar Deposit
  • Izu-Oshima S2-c Lahar Deposit
  • Izu-Oshima volcano
  • Izuo Unit
  • Izuriha Complex
  • Izuru Formation
  • Izuruha Acidic Rocks
  • Izuruha Plutonic Rocks
  • Izusan Dacite
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