- Ta-a
- Ta-b
- Tabashine Granites
- Tabito mass
- Ta-c
- Tachibana Formation
- Tachibana Group
- Tachigahana Formation
- Tachigamori Lava
- Tachigarayama Lava Dome
- Tachigase Formation
- Tachikawa 1 Formation
- Tachikawa 2 Formation
- Tachikawa 2 Terrace Deposit
- Tachikawa Gravel
- Tachikawa Loam
- Tachikawa Terrace Deposits
- Tachiusu Sandstone Member
- Tachiyama Formation
- Tachiyazawa Formation
- Ta-d
- Tada Complex
- Tadamigawa Granites
- Tadamigawa Older Granites
- Tadamigawa Younger Granites
- Tadamisawa Lavas
- Tadanaejima volcano
- Tado Facies
- Tado Formation
- Tado Tephra
- Taga Formation
- Taga Group
- Tagajo Volcanic Ash
- Taga volcano
- Tagawa Acidic Rocks
- Tagawa Metamorphic Rocks
- Tagoegawa Sandstone and Conglomerate Member
- Tagoike Lava
- Taguchi Formation
- Tahara Formation
- Tahara Member
- Taiaki Formation
- Taie Alternation
- Taie Formation
- Taie Shale
- Taigakurayama Volcanic Products
- Taihata Formation
- Taihata Shell Bed
- Taihei Formation
- Taiheizan Complex Pluton
- Taiheizan Composite Granitic Rocks
- Taiheizan Granodiorite
- Taiheizan Plutonometamorphic Rocks
- Taiheizan Pyroclastic Fall Deposits
- Taiheizan Pyroclastic Flow Deposits
- Taikazan body
- Taike Granite
- Taiki Formation
- Taikoyama Pyroclastic Member
- Taikura Basalt Member
- Taima Formation
- Tainaiiwa Lava
- Taira Formation (Upper, Yunagaya Group)
- Taira Formation (Lower, Yunagaya Group)
- Taira Formation, Niigata pref.
- Taisanji Formation
- Taisetsu Volcanic Group
- Taishaku Limestone
- Taisha Sand Dune
- Taisho Group
- Taisho Mudflow Deposit
- Taishu Group
- Taitozaki Shell Bed
- Taizoyama Andesite
- Tajibe Formation
- Tajima Vent-fill Breccia
- Tajiri Member
- Takaba Loam
- Takabari Member
- Takabatake Conglomerate Member
- Takabatake Formation
- Takabe Member
- Takabiyama Greenstones
- Takabocchi Formation
- Takadabashi Formation
- Takada Formation
- Takadaotake 1st-stage Lava
- Takadaotake 2nd-stage Lava
- Takadaotake 3rd-stage Lava
- Takadaotake Lava and Pyroclastic Rocks
- Takadaru Welded Tuff
- Takadate Andesite
- Takadate-b Volcanic Ash Flow Tuff
- Takadate Formation
- Takadate Group
- Takadate Tephra Group
- Takadate Volcanic Rocks
- Takadateyama Formation
- Takadateyama Volcanics
- Takadekki Lava
- Takadoyama Andesites
- Takafu Formation
- Takafu Mudstone Member
- Takagami Conlomerate
- Takagawa caldera
- Takagawa Formation
- Takagi Formation
- Takagise Formation
- Takagochi Formation
- Takahagi Basalt Member
- Takahama Group
- Takahama Shell Bed
- Takahara Formation (Limestone-bearing part)
- Takahara Formation (Limestone-free part)
- Takaharagawa Complex
- Takaharagawa Formation
- Takaharagawa Pyroclastic Flow Deposit
- Takahara Volcanic Rocks
- Takahara volcano
- Takahime Formation
- Takaidani Lava
- Takai Lava
- Takai Shale Member
- Takaishigawa Formation
- Takaishigawa Lava
- Takaishiyama Lava
- Takai Volcanic Rocks
- Takakubo Formation
- Takakubo Mudstone Member
- Takaku Group
- Takakuharayama Andesite
- Takakumayama Granite
- Takakura Lava
- Takakurasan 1 Lava
- Takakurasan 2 Lava
- Takakurasan 3 Lava
- Takakurasan 4 Lava
- Takakurasan 5 Lava
- Takakurasan 6 Lava
- Takakurasan 7 Lava
- Takakurasan 8 Lava
- Takakurasan 9 Lava
- Takakurasan 10 Lava
- Takakurasan 11 Lava
- Takakurasan 12 Lava
- Takakurasan 13 Lava
- Takakurasan 14 Lava
- Takakurasan 15 Lava
- Takakurasan 16 Lava
- Takakurasan 17 Lava
- Takakurasan Lava Series
- Takakura volcano
- Takakurayama Group
- Takakurayama Lava
- Takakurayamashita Lava
- Takakurayama Volcanic Products
- Takakurayama volcano
- Takakusayama Formation
- Takakusayama Group
- Takakusayama Volcanic Rocks
- Takamagahara Volcaniclastic Breccia
- Takamagahara volcano
- Takama Lava
- Takamatsudake Dacite
- Takamatsu Formation
- Takamatsu Gravels Member
- Takamatsu Muddy Sand Member
- Takamatsu Shell Sand Facies
- Takamatsu Silt Facies
- Takamine I Tephra
- Takamine II Tephra
- Takamine Formation
- Takamine Tuffaceous Sandstone A
- Takamine Tuffaceous Sandstone B
- Takamine Tuffaceous Sandstone C
- Takamine Tuffaceous Sandstone D
- Takamine Tuffaceous Sandstone E
- Takamineyama Lava
- Takamineyama stratovolcano, Gunma pref.
- Takamineyama volcano, Toyama pref.
- Takamizo Formation
- Takamizuyama Unit
- Takamoriyama Andesite
- Takamoriyama Andesite Member
- Takamoriyama Formation
- Takanabe Formation
- Takanabe Member
- Takanawa Granodiorite
- Takanawa Tonalite
- Takaneyama Formation
- Takano Dacite
- Takano Formation, Nagano pref.
- Takano Formation, Ishizuchi Group
- Takanohara Tephra
- Takanokura Formation
- Takanomine Formation
- Takano Pyroclastic Flow Deposit
- Takanuki Gneiss
- Takanuki Metamorphic Rocks
- Takaoka Formation
- Takaoka Gravel Bed
- Takaoka Sand and Silt Member
- Takao Tuff Member
- Takaoyama Andesitic volcaniclastics Member
- Takaoyama Lava
- Takappyo Volcanic Rocks
- Takappyoyama Lava
- Takaragi Loam
- Takaragi Terrace Deposit
- Takarao Formation
- Takarao Group
- Takasaka Acid Volcanic Rock
- Takasaka Green Tuff Member
- Takasaki Group
- Takasakiyama Formation
- Takasato Pyroclastic Flow Deposit
- Takasawa Sandstone Member
- Takase Formation
- Takasegawa Formation
- Takase Granite
- Takase Shale Member
- Takashibiyama Formation
- Takashihara Formation, Eastern part
- Takashihara Formation, Western part
- Takashima Formation, Hokkaido
- Takashima Formation, Shiga pref.
- Takashina Formation
- Takashimizu Basalts
- Takashimizu Formation
- Takashiro Alternation Member
- Takashiroyama Formation
- Takasunoyama Formation
- Takasuyama Andesite
- Takatama caldera
- Takatama Formation
- Takato Granite
- Takato Granodiorite
- Takatoko Tuff
- Takato Quartz Diorite
- Takatori Unit
- Takatori Volcaniclastic Rocks, Sandstone and Mudstone Member
- Takatoriyama Formation
- Takatoriyama Volcaniclastics Member
- Takatoyasan Group
- Takatoyo Member
- Takatozawa Volcanics Member
- Takatsu Formation, Kanagawa pref.
- Takatsu Formation, Kyoto pref.
- Takatsuka Gravel
- Takatsukayama Marine Clay Member
- Takatsukayama Tephra
- Takatsuki Formation, Tokyo
- Takatsuki Formation, Osaka pref.
- Takatsuno Terrace Deposits
- Takatsuo Formation
- Takatsuya stratovolcano
- Takaya-cho Muds Member
- Takaya-cho Sands Member
- Takayakushiyama Andesite Member
- Takayama Formation
- Takayama Group
- Takayama Loam
- Takayama Sheet
- Takayama Tephra
- Takayama volcano
- Takayama Volcanic Ash
- Takayama Volcanics
- Takayamazawa-Onizawa Pyroclastic Flow Deposit
- Takayanagi Formation, Upper, Niigata pref.
- Takayanagi Formation, Lower, Niigata pref.
- Takayanagi Formation, Hyogo pref.
- Takayanagi Tuff Member
- Takayashiki Formation
- Takayashiki Sandstone Member
- Takayashiki Unit
- Takayasuyama Granite
- Takayubaru Lava
- Takazawa Pyroclastic Flow Deposit
- Takazawa Scoria
- Takazumoriyama Scoriaceous Volcaniclastic Rocks
- Takazuru Formation
- Takazuruyama Formation
- Takedao Formation
- Takedao Welded Tuff
- Takedate Formation
- Takegahana Formation
- Takegi dikes
- Takejidani Body
- Takekoma Granite
- Take Mass
- Takenomachi Formation
- Takenosawa Formation
- Takenoshima Interbeds of Sandstone and Mudstone Member
- Takenoyu Volcanics Member
- Takeoka Formation
- Takeshi Formation
- Takeshima Body
- Takeshitoge Sandstone
- Taketoyo Formation
- Takeya Formation
- Takeyama Formation, Hokkaido
- Takeyama Formation, Saitama pref.
- Takeyama Formation, Kanagawa pref.
- Takezawa Formation
- Takezawa Group
- Takibuchigawa Lava
- Taki Conglomerate Member
- Takidani Granodiorite
- Taki Formation
- Takigawa Conglomerate Member
- Takigawa Formation
- Takigoshi Formation
- Takihata Alternation Member
- Takihata Formation
- Takijiri Adamellite
- Takikawa Lava
- Takikubo Loam
- Takimoto Formation
- Takinohara Body
- Takino-ma Pyroclastic Rocks
- Takinomizu I Tephra
- Takinomizu II Tephra
- Takinosawa 1 Lava
- Takinosawa 2 Lava
- Takinosawa 3 Lava
- Takinosawa 4 Lava
- Takinosawa 5 Lava
- Takinosawa 6 Lava
- Takinosawa 7 Lava
- Takinosawa 8 Lava
- Takinosawa 9 Lava
- Takinosawa 10 Lava
- Takinosawa 11 Lava
- Takinosawa 12 Lava
- Takinosawa 13 Lava
- Takinosawa Formation, Hokkaido
- Takinosawa Formation, Akita
- Takinosawa Granite
- Takinosawa Lava, Iizuna volcano, Nagano pref.
- Takinosawa Lava, Kenashiyama volcano, Nagano pref.
- Takinosawa Lava Series, Iwate pref.
- Takinosawa Unit
- Takinosawa Volcanic Rocks
- Takinoshirizawa Formation
- Takinoue Formation
- Takinoueonsen Formation
- Takisawa Formation
- Takiyama facies
- Takiyama Formation
- Takiya Subcomplex
- Takizawa Dacite Tuff
- Takizawa Formation, Fukushima pref.
- Takizawa Formation, Ibaraki pref.
- Takizawagawa Formation
- Takizawa Lavas
- Takizawa Sheet
- Takkobu Formation
- Takkobu Member
- Takodoyama Lava
- Takodoyama Lava Dome
- Takodoyama volcano
- Takojima Sand Dune Deposit
- Takonoura Formation
- Tak slump
- Takugi Trachyandesite
- Takuhiyama Pyroclastic Cone
- Takuhiyama Volcanic Rocks
- Takuma Sandy Gravel Bed
- Takura Group
- T-Am
- TAm-1
- TAm-3
- TAm-4
- TAm-5
- TAm-6
- Tama116
- Tama I Loam
- Tama II Loam
- Tama Clay Formation
- Tamadare Formation
- Tamadono Lava
- Tamagawa Dacite
- Tamagawa Formation
- Tamagawa-R4 Tephra
- Tamagawa stage igneous rocks
- Tamagawa Welded Tuff
- Tama Loam
- Tamanashi Formation
- Tamaniwa Formation
- Tamanoike Landslide and Debris-avalanche Deposit
- Tamanouchi Formation
- Tamanoyu Granodiorite
- Tamanoyu-type Granodiorite
- Tamanyu Welded Tuff Member
- Tamari Formation
- Tamasato Formation
- Tamasawa Formation
- Tamataki Tephra
- Tama Terrace Deposit
- Tamateyama Tuff Member
- Tamatsukuri Formation
- Tamayama Formation
- Tamaze Formation
- Tamaze Welded Tuff
- Tamba Belt
- Tamba Group
- Tamba-Mino-Ashio Belt
- Tame Unit
- Tamogi type
- Tamomi Formation
- Tamomi Tephra
- Tamoyachidake Lava
- Tamugigawa Formation
- Tamuragawa Formation
- Tamura Terrace Deposits
- Tanaba volcano
- Tanabe Formation
- Tanabe Group
- Tanabu Formation
- Tana Formation
- Tanahara Gravel
- Tanaharakamimizo Terrace Deposit
- Tanahara Pumice
- Tanaharashimizu Terrace Deposit
- Tanaharataima Terrace Deposit
- Tanahara Terrace Deposit
- Tanaharakayotsuya Terrace Deposit
- Tanaka Formation, Fukushima pref.
- Tanaka Formation, Osaka pref.
- Tanakami Granite
- Tanasawa Tephra
- Tanashigawa Member
- Tanashita Pumice Flow Deposit
- Tanayama Terrace Deposits
- Tanba Belt
- Tanba-Mino-Ashio Belt
- Tanbara Mollusca Bed
- Tandodani Formation
- Tando Tuff Breccia
- Tane Alternation Member
- Tanemura Conglomerate
- Tanemura Formation
- Tane Pyroclastic Flow Deposits
- Tanetomi Lava
- Taneyama Serpentinite Unit
- Tango Formation
- Taniage Loam
- Taniage Terrace Deposit
- Taniai Formation
- Tanigawa Body
- Tanigawadake Belt
- Tanigawadake Body, Serpentinite
- Taniguchi Formation, upper
- Taniguchi Formation, lower
- Taniguchi Tuff
- Tanihama Formation
- Tanijiridani Porphyritic Granite
- Tanita Terrace Deposits
- Tani Tuff
- Taniyama Formation
- Tanjosan Formation
- Tanjosan Tuff Breccia
- Tanna Tunnel Andesite
- Tanne Formation
- Tanne Intrusive Rock
- Tano Complex
- Tano Formation, Shizuoka pref.
- Tano Formation, Kyoto pref.
- Tano Formation, Miyazaki pref.
- Tanogashira Formation
- Tanohara Pyroclastic Flow Deposit
- Tanohata Formation
- Tanohata Granite
- Tanohata Sandy Shale
- Tanokura Formation
- Tano Member
- Tanosawa Formation, Fukaura
- Tanosawa Formation, Aomori
- Tano Unit
- Tanoura Formation, South Kitakami Belt
- Tanoura Formation, Kurosegawa Belt
- Tanoura Grabbroic Complex
- Tanzawa Group
- Tanzawa Plutonic Complex
- Tanzawa Pumice
- Tanzawa Tonalite Body
- Tanzawa Tonalite Complex
- Tappi Andesites
- Tappi Volcanic Rocks
- Tara Formation
- Taragadani Formation
- Taragatoge Volcanic Rock
- Tararayama Andesite
- Tara Tephra
- Taro Belt
- Taro Granite
- Tarosan Lava
- Taro volcano
- Taroyama Andesite
- Taroyama Formation
- Taroyama Member
- Taruda Formation
- Tarudagawa Member
- Tarudaki Lava
- Tarugasawa Lava
- Taruguchi Formation
- Tarukawa Formation
- Tarumae-a Pumice Flow Deposit
- Tarumae-a Tephra
- Tarumae-a Tuff Bed
- Tarumae-b Pumice Bed
- Tarumae-b Pumice Flow Deposit
- Tarumae-b Tephra
- Tarumae-b Tuff Bed
- Tarumae-c Pumice Bed
- Tarumae-c Tephra
- Tarumae-d Tuff Bed
- Tarumae-d Tephra
- Tarumae volcano
- Tarumi Tephra
- Tarumoto Pyroclastic Rock Member
- Tarumoto Pyroclastics Member
- Tarusakacho Tephra
- Tarusaka Member
- Tarusawa Sand Member
- Tarusawa Tephra
- Tarusawa Volcanic Rocks
- Tashidagawa Formation
- Tashirodake volcano
- Tashiro facies
- Tashirotai Lacustrine Formation
- Tashirotai Welded Tuff
- Tashiro Tuff
- Tashiroyama Rhyolite
- Tassobe Formation
- Tatakaiyama mass
- Tatamigaura Sandstone Member
- Tatamiishi Lava
- Tatebitoge Mass
- Tate Conglomerate and Sandstone Member
- Tate Formation
- Tatego Subunit
- Tateishi Conglomerate
- Tateishi Formation, Aomori pref.
- Tateishi Formation, Fukushima pref.
- Tateishi Formation, Kagoshima pref.
- Tateishi Member
- Tateishi Schists
- Tateishi Tuff Member
- Tatejima Conglomerate Member
- Tatekabe Lava
- Tatekabesawa Formation
- Tatematazawa Formation
- Tatenokawa Pumice Flow Deposit
- Tatenokawa Pyroclastic Rocks
- Tatenokawa Tuff
- Tatenosawa Sandstone Member
- Tateoka Formation
- Tateoka Tuff Breccia Member
- Tate Ostrea Beds
- Tate Sandstone Member
- Tateshina Volcanic Rocks
- Tateshinayama Lava
- Tate Subunit
- Tate Tuff
- Tateyama D Tephra
- Tateyama Formation
- Tateyama volcano
- Tateyamazaki Basalt Member
- Tateyamazaki Dacite
- Tateyamazaki Tuff
- Tateya Mudstone Member
- Tatokoyama Formation
- Tatokoyama Volcanic Rocks
- Tatsubadani Lava
- Tatsugami Formation
- Tatsugaya? Formation
- Tatsukushi Formation
- Tatsumarutoge Rhyolite
- Tatsunogawa-Kandagawa Sandy Gravels Member
- Tatsuno Formation
- Tatsuno Formation, Upper Formation
- Tatsuno Group, Middle Formation
- Tatsunokuchi Formation
- Tatsunokuchi Group
- Tatsuyama Formation
- Tatsuyama zone
- Tatunokuti Shell Bed
- TAu-12
- Tawaraniwa Formation
- Tawara Loam
- Tawara Platy Andesites
- Tawara Terrace Deposit
- Tawarazawa Sheet
- Tawarazu Formation
- Taya Formation
- Taya Gravels
- Tayaki Formation
- Tayama Gravel Member
- Taya Scoria
- Tayasuko
- Taya Tuff Member
- Tazawa Acidic Volcanic Rocks
- Tazawa Formation, Akita pref.
- Tazawa Formation, Niigata pref.
- Tazawa Formation, Gifu pref.
- Tazawakokogen Lava
- Tazawamoriyama Formation
- Tazawa Mudstone Member
- Tazawa Tuff
- Tazo Sandstone Member
- T-E
- TE-1
- TE-5
- TE-5a
- TE-5b
- Teijogadake Welded Tuff Member
- Tei Mélange
- Teine Formation
- Teine volcano
- Teineyama Debris Avalanche Deposit
- Teineyama Lava
- Teka Tuff
- Tenei Pyroclastic Flow Deposit
- Tengamine- Futamata Basic Rock
- Tengu Body
- Tengudakechubu Lava
- Tengudakejobu Lava
- Tengudakekabu Lava
- Tengudake Lava, Iizuna volcano
- Tengudake Lava, Yatsugatake volcano
- Tenguharayama Formation
- Tenguiwa Lava
- Tenguiwa volcano
- Tengumori Volcaniclastic Rocks
- Tengutai Tephra Group
- Tenguyama Body
- Tenguyama Formation
- Tenguyama Group
- Tenguyama Lava
- Tenguyama Sandstone Member
- Tenjinbashi Formation
- Tenjinike-L1 Tephra
- Tenjinike-L2 Tephra
- Tenjinike Tephra
- Tenjinnoki Formation
- Tenjintoge Granulestone and Mudstone Member
- Tenjinyama Pyroclastic Rocks
- Tenjinyama Tephra
- Tenjogatake Andesite Member
- Tenjosan Lava
- Tenjosan Lava Dome
- Tenjosan Tephra
- Tenjosan volcano
- Tenkawa Subroup
- Tenmabira Mud Member
- Tenma Formation
- Tenman Formation
- Tenmyosan Agglomerate
- Tenmyosan Formation
- Tenmyosan Volcanic Rocks
- Tenneru Formation
- Tenneru Shell Bed
- Tenno Coastal Dune
- Tenno Formation
- Tenno Granite
- Tenno Sand Member
- Tenoko Formation
- Tenpakubara Gravel Member
- Tenryugawa Gravel
- Tenry Gravel Bed
- Tenry Group, upper
- Tenry Group, lower
- Tenryukyo Granite
- Tenshi volcano
- Tenshojihara Lava
- Tenshozan Basalt
- Tentokuji facies
- Tentokuji Formation
- Tentsuji Group
- Terabe Sands Member
- Terabe Tephra
- Terada Andesite, Iwate pref.
- Terada Andesite Member, Hyogo pref.
- Terada Formation
- Teradani Formation
- Teradani Member
- Teradomari Formation
- Teragi Formation
- Terakawa Tephra
- Terano Metamorphic Rocks
- Terao Formation
- Terao Member
- Terao Pyroclastic Flow Deposit
- Terao Tephra
- Terasaka Intrusive Pyroclastic Rock
- Terasawa Mud Member
- Terasoma Formation
- Terauchi Formation
- Terayama Basalt
- Terayama Dacite
- Terayama Member
- Terayama Shoshonite
- Terrace Deposit I, Gamatagawa river
- Terrace Deposit II, Gamatagawa river
- Terrace Deposits, Hattogawa river
- Terrace Deposits, Hidakagawa river
- Terrace Deposits, Kanbayashigawa river
- Terrace Deposits, Mikoshigawa river
- Terrace Deposits, Minamigawa river
- Terrace Deposits, Nodagawa river
- Terrace Deposits, Odorigawa river
- Terrace Deposits, Osaka pref.
- Terrace Deposits, Takenogawa river
- Terrace Deposits, Tobishima island
- Terrace Deposits, Yuragawa river
- Terukuni Pyroclastic Flow Deposit
- Terushima Formation
- Tetori Group
- Tetsuzan products
- Tetsuzan-Yahazumori products
- Teuchizawa Breccia Member
- To1
- To3
- To12
- To-a
- Toa Lignite-bearing Member
- To-b
- Toba Group
- Toba Ultrabasic Complex
- Tobe Formation
- Toberi Formation
- Tobigamori Formation
- Tobiratoge Formation
- Tobiratoge Tuff Breccia
- Tobiratoge Volcaniclastics
- Tobishima Formation
- Tobu Formation
- Tobu Member
- Toburodani Formation
- Tobu volcano group
- Tochibara Rhyolites
- Tochibora Welded Tuff Member
- Tochiborazawa Andesite
- Tochidani Formation
- Tochigi Complex
- Tochigi Group
- Tochihara Formation
- Tochiharatani Granodiorite Porphyry
- Tochikawa Welded Tuff
- Tochikubo Formation
- Tochimochiyama Formation
- Tochimoto Formation
- Tochinaigawa Formation
- Tochio Alternation
- Tochio Formation
- Tochiya Formation
- Tochizu Alternation of Sandstone and Mudstone Member
- Tochu Formation
- Tochu Tuff
- To-Cu
- Todai Formation
- Toda Tuff
- Todera Formation
- Todo Formation
- Todorinaisawa Lava
- Togakushiarakura Agglomerate
- Togakushi Formation
- Togakushi Volcanics
- Togakushiyama Formation
- Togane Formation
- Toganegawa Mudstone Member
- Togano Unit
- Toga Pumice Bed
- Togari Formation
- Togari Member
- Togatake Subgroup
- Toga Tephra
- Toga volcano
- Toga volcano products
- Togawa Formation, Aomori pref.
- Togawa Formation, Yamanashi pref.
- Togawa Lava
- Togechaya Gravel, Sand and Mud Alternation Member
- Toge Formation, Yamagata pref.
- Toge Formation, Kanagawa pref.
- Toge Formation, Wakayama pref.
- Toge Sandstone Member
- Toge Sandy Mudstone Member
- Togesawa Welded Tuff
- Togiya Tuffaceous Sandstone
- Togo Formation
- Togo Gravel
- Togo Member
- Togoroeki Welded Tuff Member
- Togo Tephra
- Toguhama Formation
- To-H
- Toi Complex
- Toinosawa Member
- Toishi Formation
- Toishigawa Mudstone and Sandstone Member
- Toiwa Pyroclastic Flow Deposit
- Tojinbo Andesite
- Tojinbo Volcanic Rock Member
- Tojo Formation, Toyama pref.
- Tojo Formation, Osaka pref.
- Tojoko Tuff
- Tojo Member
- Tokachibuto Formation
- Tokachidake volcano
- Tokachigaoka Formation
- Tokachigaoka Tuffaceous Sand Member
- Tokachi Group
- Tokachimitsumata caldera
- Tokachimitsumata Formation
- Tokachimitsumata Pyroclastic Fall Deposit
- Tokachimitsumata Pyroclastic Flow Deposit
- Tokachi Pyroclastic Flow Deposit
- Tokachi Welded Tuff
- Tokaen Gravel Bed
- Tokaichi Body
- Tokai Group
- Tokaishoku vitreous volcanic ash zone
- Tokaishoku volcanic ash
- Tokidozawa Lava
- Tokigawa Formation
- Tokigawa Group
- Tokigaya Formation
- Toki Granite
- Tokiguchi Porcelain Clay Formation
- Tokihariyama Formation
- Toki Lignite-bearing Formation
- Tokin-no-iwa volcanic body
- Toki Sand and Gravel Formation
- Toki Sandy Gravel Formation
- Tokishi Formation
- Tokiwa Formation
- Tokiwayama Serpentine Mélange
- Tokomuro Sandy Siltstone Member
- Tokoname Formation
- Tokoname Group
- Tokonami Formation
- Tokoro Belt
- Tokorogawa Formation
- Tokoroku type Quartz Diorite
- Tokorozawa Clay Formation
- Tokorozawadai Formation
- Tokorozawa Formation
- Tokotan Formation
- Tokuda Terrace Deposit
- Tokugotoge Formation
- Tokuma Member
- Tokunaga Sandstone Member
- Tokunari Formation
- Tokura Formation, Miyagi pref.
- Tokura Formation, Gunma pref.
- Tokura Formation, Kyoto pref.
- Tokura Ophiolite
- Tokura Ultrabasic-Basic Rocks
- Tokurayama Formation
- Tokurayama Volcanic Breccia Member
- Tokurayama Welded Tuff Member
- Tokurazawa Formation
- Tokusagamine Sandstone-Mudstone Member
- Tokusatoge volcano
- Tokusenjo type
- Tokushima Formation
- Tokutani Tephra
- Tokuwa type
- Tokuwa Volcanic Breccia
- Tokuyama Complex
- Tokuyama Formation
- Tokyo Formation
- Tokyo Group
- Tomari Formation
- Tomarigaoka Tephra
- Tomarikawa Mudstone Member
- Tomaru Formation
- Tomarugawa Formation
- Tomatsuri Loam
- Tomedoro Formation
- Tomedoro Schalstein Member
- Tomegaya Formation
- Tomesaki Formation, Lower
- Tomesaki Formation, Upper
- Tomeshoyama Member
- Tomidahama Formation
- Tomidayamajodoro Tephra
- Tomigaoka Formation
- Tomigata Granite
- Tomigusuku Formation
- Tomikawa Formation
- Tomikawa Sandstone and Conglomerate Member
- Tomikura Formation
- Tomikusa Group
- Tominaga Lava
- Tomio Granite
- Tomioka Formation, Miyagi pref.
- Tomioka Formation, Tokyo
- Tomioka Formation, Kanagawa pref.
- Tomioka Group
- Tomioka type Hb-Bt Granodiorite
- Tomishige Conglomerate and Sandstone Member
- Tomishige Formation
- Tomita Formation
- Tomitoi Formation
- Tomiuchibashi Tuff Member
- Tomiya Formation
- Tomiyama Formation
- Tomiyoshi Formation
- Tomizawa Formation
- Tomobe Formation
- Tomobuchi Unit, Upper
- Tomobuchi Unit, Lower
- Tomochi Formation
- Tomoda Formation
- Tomoe Conglomerate
- Tomogashima Formation
- Tomonobori Sandy Siltstone Member
- Tomono Member
- Tomosaka Gravel Bed
- Tomuro volcano
- Tomuru Formation
- Tomyodaira Pyroclastic Rocks
- Tonami Gravel Member
- Tonami Group
- Tonaru mass
- Tonaru meta-gabbro mass
- Tonda Formation
- Tonden Mud
- Tone Complex
- Tone Formation
- Tonegawa Unit
- Toneri Formation
- Toneyama Formation
- Tonogawa Welded Tuff
- Tono Granodiorite
- Tono Granodiorite Complex
- Tonohetsuri caldera
- Tonohetsuri Formation
- Tonoiri Formation
- Tonokawa Formation
- Tonono Formation
- Tono Plutonic Complex
- Tonoshiki Formation
- Tonosho Group
- Tonoyama Formation
- Tonozawa Lava
- To-Of
- To-OS
- Torakeyama Formation
- Torakeyama Tuff Member
- To-Rd
- Toriakeura Formation
- Tori Conglomerate
- Torigakubi Conglomerate Member
- Torigakubi Formation
- Torigoe Andesites
- Torigoegawa Lava
- Torigoe Granodiorite
- Torigoe Pyroclastic Flow Deposit
- Torigoe Pyroclastic Member
- Toriigawa Formation
- Toriihira Terrace Deposits
- Toriimatsu Gravel Bed
- Torikabuto Stage
- Torikabuto Summit Lava
- Torikabuto volcano
- Torikabutoyama Lava
- Torikura Mudstone and Sandstone Member
- Torinoko Formation
- Torinosu Group
- Torinosu Limestone
- Torinosu type Limestone
- Torinoumi Lava
- Torinoumi Scoria
- Torisakagawa Formation
- Toriyago Metamorphic Rocks
- Toro Formation
- Toroji Member, lower
- Toroji Member, upper
- Toro Member
- Tosanji Granite
- Toshima Conglomerate
- Toshima Formation, Mie pref.
- Toshima Formation, Wakayama pref.
- Toshima Member, Yamanashi pref.
- Toshimaru Pumice Flow Deposit
- Toshima Sand and Gravel Member
- Toshima volcano
- Toshitanigawa Complex
- Toshitanigawa Formation
- Toshitorazu Formation
- Totarunosawa Lava
- Totohara Formation
- Totsuka Formation
- Totsukumi Mélange
- Tottabetsu Body (Plutonic rock)
- Tottabetsu Body (Peridotite)
- Tottori Granite
- Tottori Group
- Tottori Sand Dunes
- Towada Aosuji Tephra
- Towada AP Tephra
- Towada-a Tephra
- Towada Biscuit 2 Tephra
- Towada-b Tephra
- Towada caldera
- Towada Caldera-forming Stage Tephra Group
- Towada-Chuseri Pyroclastic Fall Deposit
- Towada D' Tephra
- Towada Godo Tephra
- Towada-Hachinohe Fall Tephra
- Towada-Hachinohe Pyroclastic Flow Deposit
- Towada Kasutera Tephra
- Towada-Kemanai Pyroclastic Flow Deposit
- Towada Kibidango Tephra
- Towada Kirida Tephra
- Towada Nanbu Tephra
- Towada Ninokura Tephra Group
- Towada Nukamiso Tephra
- Towada-Ofudo Pyroclastic Flow Deposit
- Towada Okoshi 2 Tephra
- Towada-Okuse Pyroclastic Flow Deposit
- Towada Post-caldera Stage Tephra Group
- Towada QP Tephra
- Towada Red Pumice Tephra
- Towada Red Tephra
- Towada Sc1 Tephra
- Towada Sc2 Tephra
- Towada SP Tephra
- Towada T-3 Tephra
- Towada T-4 Tephra
- Towada T-5 Tephra
- Towada T-6 Tephra
- Towada T-15 Tephra
- Towada T-17 Tephra
- Towada T-22 Tephra
- Towada Terrace Deposits
- Towada Zarame 1 Tephra
- Towada Zarame 2 Tephra
- Towata Mudstone
- Towata Mudstone Member
- Toya
- Toyabasan Lava
- Toya Complex
- Toya Formation, Hokkaido
- Toya Formation, Aomori pref.
- Toyagamine Andesite
- Toyagamine Formation
- Toya Group
- Toyajo Formation
- Toyama Formation, Shizuoka pref.
- Toyama Formation, Gifu pref.
- Toyamori Formation
- Toya Pumice Flow Deposit
- Toya Pyroclastic Flow Deposit
- Toya Tuff
- Toya volcano
- Toyoda Formation
- Toyofusa Group
- Toyohama Formation
- Toyohashi Formation
- Toyohashi Gravel Formation
- Toyohashi Group
- Toyohigashi Group
- Toyokawa Formation
- Toyoma Clayslate Formation
- Toyoma Formation
- Toyomane Formation
- Toyomasawa Formation
- Toyonidake Body
- Toyonishi Formation
- Toyono Formation
- Toyono Member
- Toyooka Formation, Saitama pref.
- Toyooka Formation, Aichi pref.
- Toyooka Formation, Tottori pref.
- Toyooka Lava
- Toyooka Subgroup
- Toyora Group
- Toyosaka Andesites
- Toyosaka Formation
- Toyosaka Member
- Toyosato Formation
- Toyota Alternation Member
- Toyotateyama Agglomerate
- Tozan Rhyolite Member
- Tozawa Formation
- Tozawa Sandstone and Conglomerate Member
- Tozenji Gravel Bed
- Tozurasawa Formation
- Tozurasawa Member