• M1, Tanohata Granite
• M1, Shizuoka pref.
• M I Terrace Deposit
• M2, Tanohata Granite
• M2, Shizuoka pref.
• M II Terrace Deposit
• M3, Tanohata Granite
• M3, Shizuoka pref.
• M4, Tanohata Granite
• M4, Shizuoka pref.

• Ma
• Ma -1
• Ma 0
• Ma 0.5
• Ma 1
• Ma 1.3
• Ma 1.5
• Ma 1.7
• Ma 2
• Ma 3
• Ma 4
• Ma 5
• Ma 6
• Ma 7
• Ma 8
• Ma 9
• Ma 10
• Ma 11
• Ma 11 (1)
• Ma 11 (2)
• Ma 11 (3)
• Ma 12
• Ma 13
• Ma-b
• Mabori Member
• Machi Formation, Sandy mud
• Machi Formation, Lacustrine
• Machikata Loam
• Machiniwasaka Debris Avalanche Deposit
• Machiya Member
• Madaraohokubu Lava
• Madaraojobu Lava
• Madaraokabu Lava
• Madaraokogen Pyroclastic Rocks
• Madarao volcano
• Madaraoyama Lava
• Maebashi Mudflow Deposit
• Maedaiten volcano
• Maedake Formation
• Maedake Lava, Moriyoshi volcano
• Maedake Lavas
• Maedanome Formation
• Maeda Sand Bed
• Maegase Formation
• Maegatake Lava
• Maegatakenishi Lava
• Maego Lava
• Maehotakadake Welded Tuff
• Maejima Formation
• Maekake stratovolcano
• Maekawa Formation
• Maekawahontani Pyroclastic Flow Deposit
• Maekawa Lava
• Maekawa Mudflow Deposit
• Maekesamaru Lava
• Maeko Member
• Maekura Lavas and Pyroclastics
• Maekura Stage
• Maenabemoriyama Dome Lava
• Maesawa Formation
• Maetateshinayama Lava
• Maetsukamiyama Acidic Volcanic Rocks
• Maeyamagawa Formaiton
• Maeyama Lava
• Maeyama Tephra
• Mafic rocks, Younger Ryoke Granitoids
• Mafuji Trachyte
• Magarisawa Granite
• Magarisawa Tonalite
• Magatoji Formation
• Magawadani Formation
• Magawa Formation
• Magawa Gravel Bed
• Magawa Lacusrine Deposits
• Magawa Sandstone and Conglomerate Formation
• Mageshidani Formation
• Magidai Formation
• Magisawa Formation
• Maibara Loam
• Maibara I Terrace Deposit
• Maibara II Terrace Deposit
• Maibara Terrace Deposit
• Maihara Formation
• Main Body, Okayazawa Mass
• Main body, Orikabe Plutonic Complex
• Main body, Tashirodake volcano
• Main body, Utsushigatake Gabbroic Mass
• Main cone, Miyakejima volcano
• Main cone, Nishiyama volcano
• Main cone proper, Miyakejima volcano
• Main facies, Izumi Group
• Main intrusive rocks
• Mainosawa Sands
• Mainosawa Sandstone Member
• Main part of stratovolcano, Rishiri volcano
• Main strato cone stage
• Main stratovolcano, Mikurajima volcano
• Main stratovolcano, Toshima volcano
• Maioka Formation
• Maioka Loam
• Maisawa Sandstone Member of volcanic fragments
• Maisawa Terrace Deposit
• Maito Formation
• Maiya Formation
• Maizuru Belt
• Maizuru Granite
• Maizuru Group
• Maizuru Metamorphic Rocks
• Makibara Pyroclastic Flow Deposit
• Makibuchi Formation
• Makidaira Pyroclastic Flow Deposit
• Maki Formation, Aomori pref.
• Maki Formation, Tochigi pref.
• Maki Formation, Gifu pref.
• Makihata Body
• Makihatayama Granodiorite
• Maki Member, Gifu pref.
• Maki Member, Shiga pref.
• Makimizudani Tonalite
• Makimukuyama Granite
• Makinohama Sandstone Member
• Makinohara Gravel Bed
• Makinohara Terrace Deposits
• Makio Complex
• Makio Formation
• Makita Formation
• Makitagawa Group
• Makiuchi Andesite
• Makiyama Member
• Makiyama Sands and Gravels Member
• Makuiwagawa Lava
• Makuiwa stock
• Makuyama Lava
• Ma-l
• Mamahahadake volcano group
• Mamakodake volcano
• Mameyakizawa Formation
• Mamioka Tuff
• Mamurogawa Formation
• Managawa Group
• Manaitayama Andesites
• Manaitayama Volcanic Rocks
• Manaitayama Volcanics Complex
• Manazurumisaki Lava
• Manazuru Tephra
• Manba Formation
• Manba Group
• Manba Subunit
• Manbutsuiwa Tuff Breccia
• Manchidani Formation
• Mandano Formation
• Mandano Sand and Gravel Member
• Mandokoro Gravel Bed
• Mangyo Tuff Bed
• Manitazawa Lava
• Mannami Formation
• Mano Formation, Fukushima pref.
• Mano Formation, Chiba pref.
• Manotani Metamorphic Rocks
• Mansukemichi Lava
• Mantaroyama Shale Formation
• Manzaemonyama Formation
• Manzaka Tonalite
• Manzawa Formation
• Manzawa Member
• Marginal body, Utsushigatake Gabbroic Mass
• Marishiten Lava
• Marishiten volcanic group
• Maro Member
• Maruberiwan Formation
• Marumori Central Cone Lava
• Marumori Granitic Complex
• Marumori Lava Dome
• Marumori Metamorphic Rocks
• Marumori Tuff
• Marumori volcano
• Marune Tephra
• Maruoshinden Tephra
• Marushimamine volcano
• Marushimayama Lava
• Marutadani Formation
• Marutaki Conglomerate Member
• Maruyama, Miyakejima volcano
• Maruyama Andesite
• Maruyama Dolerite
• Maruyama Formation, Hokkaido
• Maruyama Formation, Yamagata pref.
• Maruyama Formation, Fukushima pref.
• Maruyama Gabbro Complex
• Maruyamahokuho Lava
• Maruyama Lava
• Maruyama volcanic products
• Masagodake Body
• Masagoya Formation
• Masaki Granite
• Masaki Muds Member
• Masaki Sandy Gravels Member
• Mashikozawa Welded Tuff Member
• Mashizume Formation
• Mashu-b Tephra Formation
• Mashu-b Tuff Formation
• Mashu volcano
• Massaki Group
• Masudagawabashi Tuff
• Masuda Group
• Masugatayama Lava
• Masugi Tephra
• Masukawadake Dacite
• Masukawagawa Andesites
• Masuko Formation
• Masuma Formation
• Masumizuhara Pyroclastic Flow Deposit
• Masuporo Formation
• Masutomi Group
• Masuura Formation
• Masuzawa Formation
• Matago Formation
• Mataki Formation
• Matsuba Formation
• Matsubara Formation
• Matsubara Gravel Bed
• Matsudome Tuff
• Matsue Basalt
• Matsue Formation
• Matsugadaira Formation
• Matsugadaira Metamorphic Rocks
• Matsugadaira-Motai Belt
• Matsuhashi High-Mg Andesite
• Matsuhashi Rhyolite
• Matsuiwa Lava
• Matsukawa Andesite
• Matsukawa Formation, Fukushima pref.
• Matsukawa Formation, Uonuma, Niigata pref.
• Matsukawa Formation, Yuzawa, Niigata pref.
• Matsukawa Group
• Matsuki Quartz Porphyry
• Matsukitai Formation
• Matsuki-type Granitic Rocks
• Matsukizawa Sand and Gravel Member
• Matsukuma Formation
• Matsukura Mudstone, Sandstone and Conglomerate Member
• Matsukura Siliciclastic Rock Member
• Matsumaezawa Formation
• Matsumoto Gravel Bed
• Matsunagi Formation
• Matsunedani Formation
• Matsunoyama Formation
• Matsunoyama Tuff
• Matsuo Group
• Matsuotoge Lava
• Matsuoyama Formation
• Matsuozawa Lava
• Matsuozawa volcano
• Matsusaka Formation
• Matsushima Andesite
• Matsushima Formation
• Matsushima Tuff
• Matsushimawan Group
• Matsutani Metamorphic Rocks
• Matsuyamabana Lava Dome
• Matsuyamabana volcano
• Matsuyama Formation, Miyagi pref.
• Matsuyama Formation, Ehime pref.
• Matsuyama Granodiorite
• Matsuyama Group
• Matsuyama Rhyolite
• Matsuyamazawa Formation
• Matsuyazaki Debris Avalanche Deposit
• Matsuzakatoge Formation
• Matsuzaki Formation, Miyagi pref.
• Matsuzaki Formation, Shizuoka pref.
• Matsuzawa Sandstone and Mudstone Member
• Mawaki Conglomerate Member
• Mawaritaike Tephra
• Mayoizawa Mudstone
• Mayumitoge Welded Tuff
• Mazegawa Formation
• Maze Shale and Tuff Member

• MB

• Mdp
• Mdp-1
• Mdp-2

• Medake Lava
• Medake Parasitic Cone Lava
• Medake Pyroclastic Flow Deposit
• Medeshima Volcanic Ash
• Megami Formation
• Meganebashi Formation
• Megata volcano
• Meguro Porphyrite
• Meigetsutoge Formation
• Meiken Diorite
• Mekka Pumiceous Tuff Member
• Meimi Formation
• Meimi Gravels
• Memurodake Gabbro/Diorite Complex
• Menaichizawa Formation
• Menashunbetsu Body
• Menazawa Unit
• Menbo Lava
• Menbo volcano
• Menoyama Lava
• Menozawa Lava
• Meotogahana Formation
• Mera Formation
• Meshikuni Formation
• Meshimoriyama Dyke
• Meshimoriyama Volcanics
• Metamorphic rocks, Taiheizan Complex Pluton
• Metoki Coquina Conglomerate Member
• Metoki Shell-Limestone
• Meto Pyroclastic Fall Deposit
• Meto Pyroclastic Flow Deposit
• Meto Tuff Bed

• Mfsg

• MG
• Mgp
• Mgs10

• Mhb
• MHL suite

• Mi-3
• Mi-5
• Mi-6
• Mi-7
• Mi-10
• Mi-12
• Miai Formation
• Miaki Formation
• Miana Lava
• Miasa Formation
• Michigatani Formation
• Midagahara Mudflow Deposit
• Midarebashi Sand Member
• Middle I Marine Terrace Deposits, Fukui
• Middle I Terrace Deposit, Arakawa river
• Middle I Terrace Deposit, Haramachi
• Middle I Terrace Deposits, Hino
• Middle I Terrace Deposit, Itoigawa
• Middle I Terrace Deposit, Kariwano
• Middle I Terrace Deposits, Kariyata river
• Middle I Terrace Deposits, Kuwana
• Middle I Terrace Deposits, Miakata
• Middle I Terrace Deposit, Nagaoka
• Middle I Terrace Deposit, Nagawa river
• Middle I Terrace Deposit, Namie
• Middle I Terrace Deposit, Naraha
• Middle I Terrace Deposit, Noshiro
• Middle I Terrace Deposit, Shirakawa
• Middle I Terrace Deposit, Somanakamura
• Middle I Terrace Deposit, Takato
• Middle II Marine Terrace Deposits, Fukui
• Middle II Terrace Deposit, Arakawa river
• Middle II Terrace Deposit, Haramachi
• Middle II Terrace Deposits, Hino
• Middle II Terrace Deposit, Itoigawa
• Middle II Terrace Deposit, Kakioka
• Middle II Terrace Deposit, Kariwano
• Middle II Terrace Deposits, Kariyata river
• Middle II Terrace Deposits, Kuwana
• Middle II Terrace Deposits, Miakata
• Middle II Terrace Deposit, Nagaoka
• Middle II Terrace Deposit, Nagawa river
• Middle II Terrace Deposit, Namie
• Middle II Terrace Deposit, Naraha
• Middle II Terrace Deposit, Noshiro
• Middle II Terrace Deposit, Shirakawa
• Middle II Terrace Deposit, Somanakamura
• Middle II Terrace Deposit, Takato
• Middle III Marine Terrace Deposits, Fukui
• Middle III Terrace Deposit, Itoigawa
• Middle III Terrace Deposit, Kariwano
• Middle III Terrace Deposits, Kariyata river
• Middle III Terrace Deposits, Katata
• Middle III Terrace Deposit, Nagaoka
• Middle III Terrace Deposit, Nagawa river
• Middle III Terrace Deposit, Namie
• Middle III Terrace Deposit, Naraha
• Middle III Terrace Deposit, Somanakamura
• Middle IV Terrace Deposit, Namie
• Middle IV Terrace Deposit, Naraha
• Middle Fan Deposits
• Middle Fluvial Terrace Deposits, Fukui
• Middle Fluvial Terrace Deposits, Hakuba
• Middle Fluvial Terrace Deposits, Hayatsukigawa river
• Middle Fluvial Terrace Deposits, Minauchi
• Middle Formation, Maizuru Group
• Middle Formation, Suzuka Group
• Middle Haborogawa Formation
• Middle Karitasan Lava
• Middle Member, Akasaka Limestone
• Middle Member, Hashikadani Formation
• Middle Member, Hayaguchigawa Formation
• Middle Member, Kameyama Formation
• Middle Member, Kodomari Formation
• Middle Nojiriko Member
• Middle Ogane Shell Bed
• Middle Pumice Tuff Member
• Middle sheet, Yakuno Ophiolite
• Middle stage Hokusatsu Volcanic Rocks
• Middle stage Nansatsu Volcanic Rocks
• Middle stage, Tokachidake volcano
• Middle Tephra
• Middle Terrace Deposits, Adogawa river
• Middle Terrace Deposit, Aga river, Tajima
• Middle Terrace Deposit, Akebono Fault
• Middle Terrace Deposit, Chichibu
• Middle Terrace Deposit, Fujikawa river
• Middle Terrace Deposit, Hakiigawa river
• Middle Terrace Deposit, Hanakawa river
• Middle Terrace Deposits, Hokusei
• Middle Terrace Deposits, Honmegawa river
• Middle Terrace Deposits, Inabegawa river
• Middle Terrace Deposits, Inagawa river
• Middle Terrace Deposit, Jinzugawa river
• Middle Terrace Deposit, Kakizaki
• Middle Terrace Deposits, Kamogawa river
• Middle Terrace Deposit, Kawamata
• Middle Terrace Deposits, Kinomoto
• Middle Terrace Deposits, Kobe
• Middle Terrace Deposit, Kubodaira
• Middle Terrace Deposits, Makitagawa river
• Middle Terrace Deposit, Nanakita river
• Middle Terrace Depostis, Nanjo
• Middle Terrace Deposit, Nishinogawa river
• Middle Terrace Deposits, Nishiyama hills
• Middle Terrace Deposits, Obu
• Middle Terrace Deposit, Ogawa river
• Middle Terrace Deposits, Omaezaki
• Middle Terrace Deposits, Osaka pref.
• Middle Terrace Deposits, Shimizu
• Middle Terrace Deposit, Shinano river
• Middle Terrace Deposit, Shinjo
• Middle Terrace Deposit, Shirabu pass
• Middle Terrace Deposit, Shonai
• Middle Terrace Deposits, Shuchigawa river
• Middle Terrace Deposits, Suzu
• Middle Terrace Deposit, Tadami river
• Middle Terrace Deposits, Taisanjino
• Middle Terrace Deposits, Tomobuchigawa river
• Middle Terrace Deposits, Tonoda
• Middle Terrace Deposits, Toyota
• Middle Terrace Depostis, Tsuruga
• Middle Terrace Deposits, Ujigawa river
• Middle Terrace Deposit, Uwa
• Middle Terrace Deposit, Watarase river
• Middle Terrace Deposit, Yamamotoyama terrace
• Middle Terrace Deposit, Yashima
• Middle Terrace Deposits, Yoro
• Middle Terrace Deposits, Yuragawa river
• Middle tonalite, Hidaka Plutonic Rocks
• Middle Unit, Himekawa Complex
• Middle Unit, Sanbagawa Belt
• Middle Unit, Shiobra-Otawara Pyroclastic Flow Deposit
• Middle Yezo Group
• MidK-1
• MidK-2
• MidK-3
• MidK-4
• MidK-5
• Midoricho Formation
• Midorigaoka Member
• Midorimachi Formation
• Mifune Formation
• Mifune Group
• Mifune Rhyolite
• Migakisuna Formation
• Mihara body
• Miharayama Scoria Cone
• Miharu mass
• Miike explosion crater
• Mikabu Green Rocks
• Mikaburiyama Welded Tuff
• Mikabu Unit
• Mikado Unit
• Mikaguradake Granite
• Mikagura Formation
• Mikasa Andesite
• Mikasa Formation
• Mikasa Group
• Mikasayama Lava
• Mikasayama volcano
• Mikatagahara Gravel
• Mikata Gravels
• Mikata Gravels, lower
• Mikata Gravels, upper
• Mikata Rhyolite
• Mikawa Formation
• Mikawa Unit
• Miki Formation
• Miki Gravels
• Mikkaichiba Welded Tuff
• Mikkamachi Formation
• Mikuizawa? Formation
• Mikumo Granite
• Mikunidake Formation
• Mikunitoge Conglomerate Member
• Mikura Group
• Mikurajima volcano
• Mikurigaike Gravel Bed
• Mikusayama Granitic Complex
• Mimata Complex
• Mimatsudaira Lava
• Mimizukuyama Andesite
• Mimizukuyama Dacite
• Mimmaya Rhyolites
• Minagawa Formation
• Minahara Gravel
• Minaharaisobe Terrace Deposit
• Minaharamochi Terrace Deposit
• Minaharashioda Terrace Deposit
• Minahara Terrace Deposit
• Minaharatokiwa Terrace Deposit
• Minaharayotsuji Terrace Deposit
• Minakami Group
• Minakami Quartz Diorite
• Minakamiyama Volcanics
• Minakuchi Alternation of Sandstone and Mudstone Member
• Minami-aizu Formation
• Minamiakakuradake Debris Avalanche Deposit
• Minamiakakuradake Lava
• Minamiasai Formation
• Minamiboso Group
• Minamidake Pyroclastic Cone Deposit
• Minamidake Tuff Breccia
• Minamidani I Tephra
• Minamidani II Tephra
• Minamigo Formation
• Minami-Hakkoda volcanoes
• Minami-Hakkoda 1st-stage Lava
• Minami-Hakkoda 1st-stage Lava and Pyroclastic Rocks
• Minami-Hakkoda 2nd-stage Lava
• Minami-Hakkoda 2nd-stage Lava and Pyroclastic Rocks
• Minami-Hakkoda 3rd-stage Lava and Pyroclastic Rocks
• Minamihama Lava
• Minamihirasawa Formation
• Minamihirasawa Tuff
• Minamihizusa Tephra
• Minamiikaruga Tephra
• Minamiimogawa Formation
• Minamiisowaki Formation
• Minamikadosawa Tuff Facies
• Minamikadosawa Tuff Member
• Minamikata Granite
• Minamikomezawa Lava
• Minamimasagodake Body
• Minamimatadani Conglomerate Formation
• Minamimatadani Conglomerate Member
• Minami-naganuma Formation
• Minaminokomai Lava
• Minamisawayama Welded Tuff
• Minamishirado Formation
• Minamishirado Member
• Minamishirasawa Formation
• Minamisho Clays Member
• Minamitama Group
• MinamiTarusakacho Tephra
• Minamiyachi Tuff and Conglomerate Member
• Minamiyahagi Clay Formation
• Minamiyama Gravel Bed
• Minamiyoshida Alternation of Mudstone and Sandstone Member
• Minamizaki Formation
• Minamizaki Limestone
• Minamizawadake Lavas
• Minamizawa Welded Tuff Member
• Minasegawa Tuff Member
• Minashi Formation
• Minato Formation
• Minatogawa Formation
• Minatohama Siltstone Member
• Minatomachi Formation
• Minawa Formation
• Mine Formation, Tokyo
• Mine Formation, Shizuoka pref.
• Mine Group
• Mineji Lava
• Minejiyama volcano
• Minenomatsume Lava
• Minenotsuji Lava
• Mineoka Belt
• Mineoka Group
• Mino Belt
• Minobu Formation
• Minochi Formation
• Minodo Lava
• Minogo Tephra
• Minohara Tephra
• Minohata Member
• Minokawa Formation
• Minokuchi Formation
• Minokuchi Unit
• Minoo Complex
• Minoo Formation
• Minoto Lava
• Minotonakayama Lava
• Minowa Lava
• Minowasan-Adatarayama products
• Minowasan Lava
• Miogataira crater
• Miogataira Lava
• Miogawa Formation
• Mio Mass
• Miono Volcanic Rocks
• Mio Sandstone Member
• Miroku Group
• Misaka Group
• Misaki Acidic Volcanic Rocks
• Misaki Clastic Rocks
• Misaki Formation, Hokkaido
• Misaki Formation, Miura Group
• Misaki Group
• Misakimachi Formation
• Misaki Sand and Gravel Deposits
• Misawa Formation, Fukushima pref.
• Misawa Formation, Tokyo
• Misawa Sandstone Member
• Misayamatoge Basalt
• Misayamatoge Basalt Facies
• Misayamatoge Basalt Member
• Misen Lava
• Misen Lava Dome
• Misen Pyroclastic Flow Deposit
• Mishima Pyroclastic Flow Deposit
• Misobeta Member
• Misodoana
• Misogasawa Formation
• Misogawa Belt
• Misogawa Complex
• Misogawa Formation
• Mitachi Terrace Deposits
• Mita Formation, Toyama pref.
• Mita Formation, Hyogo pref.
• Mitagawa Formation
• Mitaka Dacite
• Mitaka Sandstone
• Mitake Mudflow Deposits
• Mitakeshosenkyo type
• Mitaki Andesite
• Mitaki Basalt
• Mitaki Granites
• Mitaki Igneous Rocks
• Mitaki Lava
• Mitaki Tholeiite
• Mitaki Volcanic Rocks
• Mitakura Mass
• Mitani Body
• Mitani Mudstone Member
• Mitarai Formation
• Mita Sandstone Member
• Mito Formation
• Mito lava series
• Mitomi Formation
• Mitosan Quartz Diorite
• Mitoyo Group
• Mitsuda Formation
• Mitsudake Lava, Nagano pref.
• Mitsudake Lava, Tochigi pref.
• Mitsudake volcano
• Mitsugaisan Granite
• Mitsugamine Lava
• Mitsugano Shale and Sandstone Member
• Mitsugashira Lava
• Mitsugi Conglomerate Member
• Mitsugoyama Lava
• Mitsuhama Formation
• Mitsuhashi Granite
• Mitsuhashi Granodiorite
• Mitsuishigawa Formation
• Mitsuishi Member
• Mitsuishisan Volcanic Products
• Mitsuishisan Volcano
• Mitsuke Silt Member
• Mitsukumi Pumice
• Mitsumatarenge Gabbroic Rocks
• Mitsumenaigawa Formation
• Mitsumine Formation
• Mitsumine Lower Volcanics
• Mitsuminesan Lavas
• Mitsumine Upper Volcanics
• Mitsumine Volcanics, Nagano pref.
• Mitsumine volcano, Tokyo
• Mitsumineyama Volcanics
• Mitsumori Andesite
• Mitsu Muds Member
• Mitsunomata Lava
• Mitsuo Complex
• Mitsu Sands Member
• Mitsuse Granite
• Mitsuya Formation
• Mitsuyama Formation
• Miura Group
• Miurayama Lava
• Miwa Formation
• Miwa Formation, lower
• Miwa Formation, middle
• Miwa Formation, upper
• Miwa Member
• Miwa Rhyolites
• Mixed-rock Unit
• Miyabayashi Lava
• Miyabayashi Lava I
• Miyabayashi Lava II
• Miyabayashi Lava III
• Miyagahama Body
• Miyagahama Welded Tuff
• Miyagase Formation
• Miyagawa Group
• Miyagawa Mass
• Miyagawa Welded Tuff
• Miyagi Formation
• Miyagino Tapilli Tuff Member
• Miyagino Tuffaceous Sand-mud Member
• Miyaji Belt
• Miyaji Formation
• Miyajima Formation
• Miyajima Member
• Miyakejima volcano
• Miyakeyama Pyroclastic Flow Deposit
• Miyakoda Formation
• Miyako Granite
• Miyako Group
• Miyakojima Formation
• Miyako type, Miyako Granite
• Miyamachi 1 Tephra
• Miyamachi 2 Tephra
• Miyamachi 3 Tephra
• Miyamachi Member
• Miyamadani Formation
• Miyama Formation
• Miyama Unit
• Miyama Welded Tuff
• Miyamori Complex
• Miyamori-Hayachine Belt
• Miyamori-Hayachine Ophiolite
• Miyamori Ultrabasic Rocks
• Miyamori Ultramafic Complex
• Miyamoto mass
• Miyamura Member
• Miyamuro Sandstone and Mudstone Member
• Miyano Formation
• Miyanohara Tonalite
• Miyanooku Formation
• Miyanoshita Formation
• Miyanoshita Quartz Diorite Porphyry
• Miyanotani composite dike
• Miyanoura Formation
• Miyanoura Granite
• Miyasakatoge Gravel Bed
• Miyashita Mudstone Member
• Miyata Formation, Akita pref.
• Miyata Formation, Kanagawa pref.
• Miyataki Dyke
• Miyato Formation
• Miyatoko Tuff
• Miyatoko Tuff Member
• Miyatsukayama Tephra
• Miyatsukayama volcano
• Miyawaki Pyroclastic Flow Deposit
• Miyazaki Facies
• Miyazaki Formation
• Miyazaki Group
• Miyazawa Pyroclastic Flow Deposit
• Miyazu Granites
• Miyoshi Formation
• Miyukida Fan Deposit
• Miyukida Mudflow Deposit
• Miyuki Formation
• Miza Gravel Bed
• Mizoguchigawa Lava
• Mizoguchi Tuff Breccia Formation
• Mizoguchizawa Lava
• Mizore Granite
• Mizugamori Volcanic Rock
• Mizuho Conglomerate Member
• Mizuho Terrace Deposits
• Mizuho Volcanic Rocks
• Mizukamidani Formation
• Mizukoshi Formation
• Mizunagasawa Formation
• Mizunagasawayama Welded Tuff Formation
• Mizunami Group
• Mizunashi Formation, Niigata pref.
• Mizunashi Formation, Toyama pref.
• Mizunashigawa Group
• Mizunashigawa Lavas
• Mizunashigawa Metamorphic Rocks
• Mizunashi Granite
• Mizune Formation
• Mizunokizawa Unit
• Mizuno Member, Seto Porcelain Clay Formation
• Mizuno Member, lower Yadagawa Formation
• Mizuno Member, upper Yadagawa Formation
• Mizunoto stratovolcano
• Mizunoya Formation
• Mizunuma Formation
• Mizunuma-Kaneyama Tephra
• Mizunuma Pyroclastic Deposit
• Mizunuma Pyroclastic Flow Deposit
• Mizuochikannon Basalt
• Mizuo-Oiriyama volcano
• Mizuoyamachui Lavas
• Mizuoyama Lava
• Mizuoyamasancho Lava
• Mizusawa Formation
• Mizusawa Lava
• Mizusawayama Lava
• Mizusawayama Pyroclastic Flow Deposit and Talus Deposit
• Mizutamari explosion crater
• Mizutani Lava
• Mizutori Member
• Mizuyagadani Formation
• Mizuyama Formation

• Mk
• Mk-2
• Mk19
• MK-KM
• KM-OT
• Mk pfa
• Mk pfl
• MK-SY
• Mk Tuff

• Ml
• Ml-a
• Ml-b
• Ml-c
• Ml-d
• Ml-e

• Mo
• Mobata Member
• Mochigase stage intrusive rocks
• Mochigase stage volcanic rocks
• Mochizuki Volcaniclastics
• Moebetsu Formation
• Moehoro Formation
• Mogami Group
• Mogamiyama Formation
• Mogura Formation
• Mogusa Formation
• Mokariyama Granodiorite
• Mokkodake Lava
• Momigasaki Lava
• Momigi Unit
• Momijidai Formation
• Momijiyama Dune Sand
• Momijiyama Formation
• Momisawa Body
• Momisawadake Dacite Tuff
• Momisawadake Volcanic Rocks
• Momisawadake Volcano
• Momisawa Pyroclastic Flow Deposit
• Momiyama Formation
• Momoidani Body
• Momonoki Formation, Yamanashi pref.
• Momonoki Formation, Yamaguchi pref.
• Momonoki Subgroup
• Momoyake Breccia Tuffaceous Agglomerate
• Momoyake Tuff Breccia
• Momoyake Volcanic Rocks
• Momoyama Gravel Bed
• Monden Group
• Mone Formation
• Moniwa Conglomerate Member
• Moniwa Formation
• Monmyoji Alternation of Sandstone and Mudstone Member
• Monobegawa Group
• Monomidake Formation
• Monomigatake Formation
• Monomiyama Formation
• Mononobe Formation
• Monzen Formation
• Monzen Group
• Mooka Pumice
• MoP
• Moribu Formation
• Moridera Tuff
• Moriguchi Gravel Bed
• Morikuma Volcanic Breccia Member
• Mori Member
• Morito Formation
• Morito Mudstone Formation
• Morito Tuffaceous Siltsone Formation
• Moriya Formation
• Moriyama Volcanics
• Moriyasu Granite
• Moriyoshi Dacite
• Moriyoshi volcano
• Moroiso Tephra
• Morotsuka Group
• Morozaki Group
• Morozawa Pyroclastic Flow Deposit
• Moshi Sandstone
• Moshi Welded Tuff
• Mot
• Motai Complex
• Motai Group
• Motai-Matsugadaira Belt
• Motai Metamorphic Rocks
• Motegi Formation
• Motoaikai Formation
• Motobu Formation
• Motobu Unit
• Motochi Formation
• Motodo Formation
• Motodori Lava
• Motodoriyama Volcanic Rocks
• Motohachioji Formation
• Motohata Formation
• Motojuku Formation
• Motokanbe Formation
• Motokozawa Basalt
• Motokozawa Formation
• Motomura Formation
• Motomura Member
• Motonakago Terrace Deposit
• Motonopporo Clay Formation
• Motoshirane Lava
• Motoshirane pyroclastic cone
• Motosoja Lahar Deposit
• Mototaki Lava
• Motoura Formation
• Motoyama Formation
• Motoyama Member
• Motoyama Pyroclastic Flow Deposit
• Motoyama Volcanic Breccia Member
• Moura Andesites
• Moura Volcanic Breccia
• Moyasan Rhyolite
• Mozawa Tuffaceous Sandstone Member
• Mozume Pyroclastic Flow Deposit

• Mpk
• M-Pm

• Mr
• Mr-1
• Mr-2
• Mr-3

• MS
• Msp

• MT
• MT1
• MT2
• MTB
• MTD
• Mt pfa
• Mt pfl
• MtS

• Mudstone Unit, Northern Complex, Hyuga Group
• Mudstone Unit, Southern Complex, Hyuga Group
• Mugi Formation
• Mugikubo Lava
• Mugi Mélange
• Mugio Formation
• Mugishima Body
• Mugishima Gneiss
• Mugishima Granite
• Mugitani Complex
• Mugitani Formation
• Mugitanigawa Welded Tuff Member
• Mugurazawa Formation
• Mujinagoro Andesite
• Mujinagoro Body
• Mujinayama Lava
• Mukaihara Formation
• Mukai Facies
• Mukaiyama Formation
• Mukaiyama Lava
• Mukaiyama Pyroclastic Rocks
• Mukaiyama Tephra
• Mukaiyama volcano
• Muka Pyroclastic Fall Deposit
• Muka Pyroclastic Flow Deposit
• Mukasa Complex
• Muka Welded Tuff
• Mukokawara Terrace Deposit
• Mukugawa Complex
• Mukurezawa Lava
• Mumaya Body
• Mumayagawa Formation
• Murakami Conglomerate
• Murakami Siltstone Member
• Murakamiyama Lava
• Murakamiyama lava dome
• Murakushi Sand Bed
• Murakushi Sand Bed
• Muramatsu Sandstone Member
• Muraoka Formation
• Murasaki Tephra
• Murayama Formation
• Mure Conglomerate
• Mure Debris Avalanche Deposit
• Mure Debris Flow Deposit
• Mure Formation, Nagano pref.
• Mure Formation, Oita pref.
• Muregaoka Andesite
• Mure Tuff Breccia Member
• Muroda Formation
• Muroda Pyroclastic Flow Deposit
• Muroda Tuff
• Murodo Gravel Bed
• Muro Group
• Murohama Formation
• Muro Ignimbrite
• Murokubogawa Unit
• Muromaki Conglomerate Member
• Murone type
• Murono Formation
• Murono mud volcano
• Muro Pyroclastic Flow Deposit
• Murotohanto Group
• Murotomisaki Gabbro
• Muroyama Formation
• Musashino Gravel Bed
• Musashino Loam
• Musashino Terrace Deposit
• Mushikawa Complex
• Mushikawa Formation
• Mushikawa Member
• Mushikawa Olistostrome
• Mushikura Agglomerate
• Mushikura Lava
• Mushiu Lava
• Mushizaki Mudstone Member
• Mushono Tephra
• Mutsuo Formation

• MY
• My1
• My2
• My-Hb
• Myodaiji Formation
• Myodani Formation
• Myogadani Formation
• Myogashima Alternation Member
• Myogatani Formation
• Myogazawa Formation, Niigata pref.
• Myogazawa Formation, Tochigi pref.
• Myojin Formation
• Myojingatake Andesite Member
• Myojinyama-Akeshidani Granite
• Myojinzawa Green Tuff Member
• Myojogahara Member I
• Myojo Limestone
• Myoken Plukton
• Myoken Tuff Breccia Member
• Myokosawadake Dacite
• Myoko Volcanic Mudflow Deposit II
• Myoko volcano
• Myoko volcano group
• Myozawabashi Formation
• Myozawa Formation
• Myozawagawa Tuff Member
• My-TB
• MY-Unit 1
• MY-Unit 2
• MY-Unit 3
• MY-Unit 4
• MY-Unit 5

• Mzpk