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List of geological units in Fukushima prefecture

A list of stratigraphic units, igneous bodies, and geological structures reported from Fukushima prefecture, Tohoku region, Honshu island, Japan.

Photographs of geological units in Fukushima prefecture

Cambrian (541-485.4 Ma)
Motai-Matsugadaira Belt
Yamagami Metamorphic Rocks
Yaguki Metamorphic Rocks
Matsugadaira Metamorphic Rocks
Suketsune Metamorphic Rocks
Gozaisho-Takanuki Metamorphic Rocks
Gozaisho Metamorphic Rocks
Takanuki Metamorphic Rocks
Paleozoic
Nekonakiyama Gabbroic Rocks
Silurian-Devonian
Matsugadaira formation
Devonian (419.2-358.9 Ma)
South Kitakami Belt
Soma Paleozoic Formations
Ainosawa Formation
Carboniferous (358.9-298.9 Ma)
South Kitakami Belt
Soma Paleozoic Formations
Mano Formation
Tateishi Formation
Yaguki Limestone
Otakizawa Formation
Permian (298.9-252.17 Ma)
South Kitakami Belt
Soma Paleozoic Formations
Yumiorezawa Formation
Oashi Formation
Uwano Formation (Uwagaya formation)
Sodesawa Formation
Maruyama Formation
Takizawa Formation
Otori Formation
Hinoemata formation
Takakurayama Group
Kashiwadaira formation
Motomura formation
Iriishikura formation
Matsuyamazawa Formation
Seitarozawa Formation
Jurassic (201.3-145.0 Ma)
Tochikubo formation
Tomizawa formation (Torinosu limestone)
Koike limestone
Soma formation
Yamakami formation
South Kitakami Belt
Karakuwa-Oshika Subbelt
Somanakammura Group
Tomizawa Formation
Nakanosawa Formation
Koike Limestone Member
Tatenosawa Sandstone Member
Tochikubo Formation
Yamagami Formation
Awazu Formation
Oto Formation
Hinoemata Formation
Cretaceous (145.0-66.0 Ma)
Kakkoyama Formation
Futaba Group
Tamayama Formation
Irimazawa Member
Kohisagawa Member
Kasamatsu Formation
Ashizawa Formation
Obisagawa Member
Asamigawa Member
South Kitakami Belt
Karakuwa-Oshika Subbelt
Somanakamura Group
Koyamada Formation
Abukuma Granitic Rocks
Hanazukayama mass
Tatakaiyama mass
Otsunagi mass
Hiyama mass
Higashiniidono mass
Miharu mass
Saiso mass
Nagato mass
Takanokura Formation
Kunimiyama Granodiorite
Udagawa Granodiorite
Hachijoishiyama Granite
Nittagawa Granodiorite
Kawabusa Granodiorite
Okurayama Quartz Diorite
Tamanoyu Granodiorite
Hayama Gabbroic Mass
Shiroumaishiyama Gabbroic Mass
Utsushigatake Gabbroic Mass
Main body
Marginal body
Yaguki Granodiorite
Ohisagawa Granodiorite
Shibayama mass
Yoshimagawa mass
Saiso mass
Nagato mass
Iritono mass
Miyamoto mass
Samegawa mass
Ishikawa mass
Tabito mass
Ronden mass
Jumonji mass
Cretaceous-Paleogene
Hinoematagawa Granite
Eocene (56.0-39.0 Ma)
Shiramizu Group
Iwaki Formation
Oligocene (39.0-23.03 Ma)
Shiramizu Group
Shirasaka Formation
Asagai Formation
Neogene
Totsuna formation
Nashidaira formation
Hagino formation
Tashiroyama Rhyolite
Sanekawa Lava
Miocene (23.03-5.33 Ma)
Yunagaya Group
Misawa Formation
Honya Formation
Ishimoriyama Tuff Breccia Member
Kamenoo Formation
Mizunoya Formation
Goyasu Formation
Kunugidaira Formation
Shichiku Formation
Yuzuritoge Formation
Ninosawa Formation
Daibutsuyama Rhyolite
Hibara Formation
Meganebashi Formation
Tsuchiyutoge Formation
Horiguchi Formation
Kijigoya caldera
Kijigoya Formation
Akimotoko Pyroclastic Flow Deposit
Matsukawa Formation
Odaira Formation
Itaya Formation
Shirado Group
Minamishirado Formaiton
Yoshinoya Formation
Takaku Group
Shimotakaku Formation
Numanouchi Formation
Kamitakaku Formation
Kokozura Formation
Taga Group
Hisanohama channel
Hs2 Unit
Hs1 Unit
Akashiba Formation
Kurakawa Formation
Iwagamiyama Formation
Takatama caldera
Takatama Formation
Fukazawa Pyroclastic Flow Deposit
Onagurayama Andesite
Yanamori formation
Hiyama formation
Ouchi Formation
Ryozen Formation
Tenmyosan Volcanic Rocks
Shiote Formation
Iwakura Formation
Terasaka Intrusive Pyroclastic Rocks
Hagurosan Rhyolite
Ome formation
Kaneyama formation
Kagata formation
Kuroiwa formation
Tamaji formation
Kurate formation
Nakasato formation
Nishigodo formation
Akasaka formation
Yanakawa formation
Hazama formation
Kori formation
Urushikubo formation
Funaishi formation
Okubo formation
Iizawa formation
Tairashio formation
Amidayama formation
Yoshigasawa formation
Hatsuno formation
Shiotsubo Formation
Fujitoge Formation
Yanaizu Pyroclastic Flow Deposit
Niitsuru Pyroclastic Flow Deposit
Nadegi Pyroclastic Flow Deposit
Natsui Pyroclastic Flow Deposit
Ichinotogawa Pyroclastic Flow Deposit
Yamato Pyroclastic Flow Deposit
Takasato Pyroclastic Flow Deposit
Mishima Pyroclastic Flow Deposit
Tsurunumagawa Pyroclastic Flow Deposit
Minami-aizu Formation
Odoshimazawa Pyroclastic Flow Deposit
Komadotoge Pyroclastic Flow Deposit
Kuromori formation
Yonaihata formation
Kawakei formation?
Shiroishi formation
Kawachi formation
Kubota formation
Tennoji formation
Kuboma formation
Takizawagawa Formation
Miyashita Mudstone Member
Matsuzakatoge Formation
Fuzawa Formation
Shidadaira Formation
Kitatage Formation
Osawaguchi Tuff Member
Yajishita Rhyolites
Higashiomata Formation
Notegamiyama Basalt
Iriyamazawa caldera
Iriyamazawa Formation
Hiwada caldera
Hiwada Formation
Jonoirizawa caldera
Jonoirizawa Formation
Takagawa caldera
Takagawa Formation
Kuwazone Pyroclastic Flow Deposit
Miocene-Pliocene
Hitachi Group
Terushima Formation
Yotsukura Formation
Izumi group
Naematsuyama rhyolite
Nakosonoseki formation
Kurosuno formation
Sekinoue formation
Takizawa formation
Katahira formation
Asakawa formation
Akagawa formation
Tatsunokuchi formation
Pliocene (5.33-2.58 Ma)
Yokomuki caldera
Yokomuki Formation
Himenuma Pyroclastic Flow Deposit
Otoge caldera
Otoge Formation
Saitsu Pyroclastic Flow Deposit
Kozoneyama Lava
Hakaseyama Volcanic Rocks
Izumi Formation
Hotokezawa Pyroclastic Flow Deposit
Akarutoge Pyroclastic Flow Deposit
Nikogi formation
Uwaigusa Formation
Sasamoriyama Andesite
Aizu-kaneyama Volcanic Rocks
Sendai Group
Dainenji Formation
Mukaiyama Formation
Tatsunokuchi Formation
Kameoka Formation
Neogene-Pleistocene
Chosugatamayama Lava
Pliocene-Pleistocene
Yamasato group
Quaternary
Nishiuchi formation
Pleistocene (2.58- 0.01Ma)
Suriagehara Fan Deposit
Yachidaira Lake Deposit
Bandai-Hayama 1 Pyroclastic Flow Deposit
Tsukabara Formation
Shimizumachi Formation
Nishikarasugawa Andesite
Fushiogami Debris Avalanche Deposit
Todera Formation
Nanaorezaka Formation
Takada formation
Sodetamayama Formation
Shirakawa formation
Shirakawa Pyroclastic Flow Deposits
Kamafusayama Pyroclastic Flow Deposit
Tenei Pyroclastic Flow Deposit
Nishigo Pyroclastic Flow Deposit
Ashino Pyroclastic Flow Deposit
Kumado Pyroclastic Flow Deposit
Nagurasawa Pyroclastic Flow Deposit
Shimogo Formation
Pre-Adatara volcano
Numagasaku formation
Adachigahara-II formation
Adachigahara-I formation
Adachi tuff bed
A1 tuff bed
A2 tuff bed
A3 tuff bed
A4 tuff bed
Fujita formation
Aira-Tn tuff bed (AT)
Koriyama Formation
Nihonmatsu Formation
Otama Formation
Otsuki formation
Nagai-I formation
Nagai-II formation
Nagai-III formation
Numazawa volcano
Numagozen Pyroclastic Deposit
Maeyama Lava
Sozan Lava
Mizunuma Pyroclastic Deposit
Nm-MZ Tephra
Mukurezawa Lava
Numazawa-Shibahara Tephra
Shirifukitoge Pyroclastic Deposit
Sakasegawa Pyroclastic Flow Deposit
Bandai volcano
Kobandai volcano
Ohbandai volcano
Kushigamine volcano
Akahani volcano
Okinajima Debris Flow Deposit
Azuma volcano
Takayama volcano
Higashiazumayama volcano
Eboshiyama volcano
Nakaazumayama volcano
Maedaiten volcano
Issaikyoyama volcano
Tenguiwa volcano
Nishidaiten-Nishiazumayama volcano
Nakadaiten-Higashidaiten volcano
Takakurayama volcano
Shionokawa volcano
Machiniwasaka Debris Avalanche Deposit
Adatara volcano
Minowasan-Adatarayama products
Numanotaira Crater Lake-fill Deposit
Numanotaira Pyroclastic Cone Deposit
Kagoyama Lava
Yukawa Pyroclastic Flow Deposit
Numanotaira Welded Pyroclastic Rocks
Adatarayama Lava
Seishidaira Lava
Funamyojinyama Lava
Tetsuzan-Yahazumori products
Shojigaiwa Lava
Tainaiiwa Lava
Kimenzan Lava
Motoyama Pyroclastic Flow Deposit
Minowasan Lava
Akataki Lava
Iogawa Lava
Shiraitonotaki Lava
Oshosan products
Sennyodaira Lava
Maegatake Lava
Yamazaki Debris Avalanche Deposit
Oshosan Lava
Otaki Lava
Akagidaira Lava
Maegatakenishi Lava
Choshigataki Lava
Yakushidake Lava
Choshigataki Pyroclastic Flow Deposit
Dake Lava
Nagasaka Pyroclastic Flow Deposit
Endogataki Lava
Sogodai Lava
Numajiri Pyroclastic Flow Deposit
Ad-DK Tephra
Nekoma volcano
Younger Volcanic Fan Deposit
Older Volcanic Fan Deposit
Kanagawayama Debris Avalanche Deposit
Sunagohara caldera
Sunagohara Formation
Yunotake Rhyolite
Sunagohara-Kubota Pyroclastic Deposit
Sn-KC Tephra
Narioka caldera
Narioka Formation
Tonohetsuri caldera
Tonohetsuri Formation
Kasshi Volcanic Rocks
Oshiromoriyama Lavas
Ono caldera
Ono Formation
Kasshiasahidake volcano
Futamatayama volcano
Futamatayama Lava
Futamata Pyroclastic Flow Depoist
Iwayama Lavas
Hiuchigatake volcano
Tsurugaike Debris Avalanche Deposit
Kan-nongawa Debris Avalanche Deposit
Azuma-Fukushima Tephra
Azuma-Sakuma Tephra
Ad-MH1 Tephra
Ad-MH2 Tephra
Ad-MH3 Tephra
In-KT Tephra
In-KTa Tephra
In-KTb Tephra
In-KTc Tephra
TK Tephra
Hu-NN Tephra
Nk-MA Tephra
NT Tephra
On-Pm1 Tephra
On-NG Tephra
Ag-OK Tephra
3rd Terrace Deposits, Kakuda
3rd-a Terrace Deposits, Kakuda
2nd Terrace Deposit, Kakuda
Middle Terrace Deposit, Shirabu pass
Higher Terrace Deposits, Somanakamura
Middle I Terrace Deposits, Somanakamura
Middle II Terrace Deposits, Somanakamura
Middle III Terrace Deposist, Somanakamura
Lower I Terrace Deposits, Somanakamura
Lower II Terrace Deposits, Somanakamura
Middle Terrace Deposit, Tadami river
Higher I Terrace Deposit, Kawamata
Higher II Terrace Deposit, Kawamata
Middle Terrace Deposit, Kawamata
Lower I Terrace Deposit, Kawamata
Lower II Terrace Deposit, Kawamata
Higher I Terrace Deposit, Haramachi
Higher II Terrace Deposit, Haramachi
Middle I Terrace Deposit, Haramachi
Middle II Terrace Deposit, Haramachi
Lower I Terrace Deposit, Haramachi
Lower II Terrace Deposit, Haramachi
Higher I Terrace Deposit, Aga river, Wakamatsu
Higher II Terrace Deposit, Aga river, Wakamatsu
Higher Terrace Deposit, Aga river, Tajima
Middle Terrace Deposit, Aga river, Tajima
Lower I Terrace Deposit, Aga river, Tajima
Lower II Terrace Deposit, Aga river, Tajima
Lower III Terrace Deposit, Aga river, Tajima
Higher I Terrace Deposit, Namie
Higher II Terrace Deposit, Namie
Middle I Terrace Deposit, Namie
Middle II Terrace Deposit, Namie
Middle III Terrace Deposit, Namie
Middle IV Terrace Deposit, Namie
Lower I Terrace Deposit, Namie
Lower II Terrace Deposit, Namie
Higher I Terrace Deposit, Naraha
Higher II Terrace Deposit, Naraha
Middle I Terrace Deposit, Naraha
Middle II Terrace Deposit, Naraha
Middle III Terrace Deposit, Naraha
Middle IV Terrace Deposit, Naraha
Older Terrace Deposit, Taira
Younger Terrace Deposit, Taira
Pleistocene-Holocene
Lower I Terrace Deposit, Tadami river
Lower II Terrace Deposit, Tadami river
Lower I Terrace Deposit, Takiya river
Lower II Terrace Deposit, Takiya river
Lower I Terrace Deposit, Naraha
Lower II Terrace Deposit, Naraha
Holocene (0.01-0 Ma)
Yasumiishihara formation
Adachi tuff bed
A0 tuff bed
Numazawa pumice bed
Numazawa volcano
Numazawako Lahar Deposit
Numazawa-Numazawako Pyroclastic Deposit
Unit I = Numazawa-Numazawako Pyroclastic Flow Deposit
UUI
LUI
Unit II
Unit III
Unit IV
Adatara volcano
Minowasan-Adatarayama products
Sukawa L1 Lahar Deposit
Bandai volcano
Kobandai volcano
Bandai 1888 Lahar Deposit
Takahara volcano
Stage 2
Otawara Pyroclastic Flow Deposits
Shiobara-Otawara Tephra
Shiobara-Otawara Pyroclastic Flow Deposit
Middle unit
Shiobara-Otawara Surge Deposit
Shiobara-Otawara Pumice Fall Deposit
Sawada Pumice Fall Deposit
Azuma volcano
Jododaira volcano
Jododaira JP7 Unit
Oana Unit
Jododaira JP6 Unit
Jododaira JP5 Unit
Jododaira JP4 Unit
Jododaira JP3 Unit
Jododaira JP2 Unit
Issaikyo Unit
Kofuji Unit
Jododaira JP1 Unit
Goshikinuma Unit
Okenuma Unit
Hr-FP Tephra
Lowest I Terrace Deposit, Tadami river
Lowest II Terrace Deposit, Tadami river
Lowest III Terrace Deposit, Tadami river
Lowest IV Terrace Deposit, Tadami river
Lower IV Terrace Deposit, Aga river, Tajima
Investigation in progress
Karosan Formation
D1 formation
Koya formation
Atsukashiyama formation
Doyazawa formation
Yamazaki lahar deposit
Joko formation
Geological structures
Iwanuma-Hisanohama tectonic line
Ogai fault
Futaba fault (Futaba reverse fault)
Okidokawara reverse fault
Tateishi reverse fault
Osawatoge fault
Yamakami fault
Jisabara fault
Shiogai fault
Kidogawanangan fault
Hirono fault
Idozawa fault
Kawageta fault
Futatsuya fault
Yunotake fault
Akai fault
Tanagura shear zone (Tanagura tectonic line)
Morioka-Shirakawa tectonc line
Hatagawa shear zone