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List of geological units in Aomori prefecture

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

Photographs of geological units in Aomori prefecture

Jurassic (201.3-145.0 Ma)
Nagahama Formation
North Kitakami Belt
Kuzumaki - Kamaishi Sub-belt
Owasawagawa Formation
Nishimatayama Formation
Mitsumenaigawa Formation
Kodomarimisaki formation
Akka - Tanohata Sub-belt
Shiriya Group
Tateishi Formation
Higashidake Formation
Pre-Miiyako sedimentary rocks
Osawagawa Formation
Cretaceous (145.0-66.0 Ma)
Abukuma belt
Shirakamidake Granitic Complex
Harachiyama formation
Kitakami mountains plutonic rocks
II Zone
Hashikami Granite
Hishikuiyama granite
Osawa granite
Nanatsudaki Granites
Higashidake granite
Fukuura granite
Shiriyazaki granite
Nishimeya Granites
Miocene (23.03-5.33 Ma)
Fudotaki Formation
Lower Nihonmatsu Tuff
Kanagigawa Member
Genpachimori Formation
Ota Pumiceous Volcaniclastic Rocks
Umanokamiyama Formation
Nyunai Formation
Nagane Formation
Fuyube Formation
Bentenjima Rhyolite Member
Shiroiwazaki Rhyolite Member
Isomatsu Formation
Gongenzaki Formation
Variegated Tuff Member
Purple Propylite Member
Purple Tuff Breccia Member
Otose Formation
Kohamadatezawa Andesite Member
Azumagawa Rhyolite Member
Kiyotakizawa Andesite Member
Fujikuragawa Formation
Kuroishizawa Formation
Tanosawa Formation
Kurosaki Formation
Odoji Formation
Juniko Tuff Member
Sasamoriyama Volcanic Rocks
Moura Andesites
Wadagawa Formation
Yotsuzawa Formation
Nishinosawa Formation
Kanegasawa Formation
Higashidaki Formation
Benkeinai Formation
Hayaguchigawa Formation
Tomarikawa Mudstone Member
Yotsuyaku formation
Suenomatsuyama formation
Kadonosawa formation
Shinden formation
Akuidake andesites
Sai formation
Yagen Formation
Ohatagawa Green Tuff Member
Kamanosawa Tuff, Sandstone and Shale Member
Yunokawa Green Tuff Member
Yunokogawa Sandstone and Mudstone Member
Yunomatagawa Formation
Yunokawa Formation
Yunokogawa Formation
Oma Formation
Kozawa Formation
Kuzuawa Member
Ginanboku Member
Hinokigawa Formation
Ushidaki facies
Takiyama facies
Otokogawa facies
Hinokigawa facies
Kinpachizawa Formation
Oritoyama Basalt
Bentenjima Rhyolite
Ikokuma Andesites
Okoppe andesites
Zaimokugawa Formation
Ogawame Agglomerate Member
Ikokuma Agglomerate Member
Wakinosawa Andesites
Tomari Formation
Tashiro facies
Hiyamizu facies
Sarugamori Formation
Horozuki Volcanic Rocks
Gamanosawa Formation
Fukaura rhyolites
Tappi Volcanic Rocks
A I
A II
A III
A IV
Soma Agglomerate Formation
Matsukitai Formation
Tochinaigawa Formation
Yuguchiyama Formation
Nuruyu Formation
Itadome Formation
Nashikizawa Tuff Member
Lower Member
Origamizawa Formation
Manzaemonyama Formation
Aseishigawa Basalt
Kaifukiyama Dacite
Arakawa Dolerite
Jogakura Dacite
Dochi Formation
Komasuzawa Formation
Tsukihiyama Volcanics
Towadaginzan formation
Oide formation
Hiroto formation
Ottatezawa formation
Hayasemori formation
Tobe formation
Sunakose formation
Sugozaki Quartz Diorite
Akaishigawa Diorite Porphyrite
Miocene-Pliocene
Misogasawa Formation
Upper Nihonmatsu Tuff
Akaishi Formation
Pliocene (5.33-2.58 Ma)
Imabetsu Andesites
Mimmaya Rhyolites
Masukawagawa Andesites
Masukawadake Dacite
Kanita Formation
Karasudake Rhyolite
Maito Formation
Sunagosawa formation
Sunagomata Formation
Kawakura Formation
Otakizawa Pumiceous Volcaniclastic Rocks
Taiaki Formation
Higashimeya Formation
Takano Dacite
Yunosawa caldera
Obirakiyama Pyroclastic Flow Deposit
Ikarigaseki caldera
Ajarayama Andesite
Ikarigaseki Formation
Nijikai Tuff
Mitsumori Andesite
Fujisawamori Lava
Kuromori Lava
Sorigasezawa Andesite
Kenyoshi formation
Shimizume formation
Horyo-Kita Lava
Togawa Formation
Sannohe group
Togawa formation
Tomezaki formation
Meoki member
Ohata Formation
Komena Dacite
Hantarozawa Welded Tuff
Totezawa formation
Odakamori volcanic rocks
Odakamori lava
Pliocene-Pleistocene
Narusawa Formation
Isodayama Formation
Hosono Andesite
Pleistocene (2.58- 0.01Ma)
Noheji Formation
Tanabu Formation
Tazawamoriyama Formation
Shoheizugawa Pumiceous Volcaniclastic Rocks
Takazumoriyama Scoriaceous Volcaniclastic Rocks
Hongogawa Pumiceous Volcaniclastic Rocks
Maedanome Formation
Nakasato Sandstone Member
Koganeyama Formation
Hirosakikobon Formation
Tateoka formation
Hakkoda caldera
Kita-Hakkoda volcanoes
Odake Pyroclastic Rocks
Odake Lava
Akakuradake Pyroclastic Rocks
Akakuradake Lava
Idodake Pyroclastic Rocks
Idodake Lava
Kodake Lava
Iodake Lava
Sennintai Lava and Pyroclastic Rocks
Tamoyachidake Lava
Takadaotake Lava and Pyroclastic Rocks
Hinadake Lava and Pyroclastic Rocks
Tashirotai Lacustrine Formation
Minami-Hakkoda volcanoes
Tsuta Debris Avalanche Deposit
Komagamine Pyroclastic Rocks
Komagamine Lava
Koganetai Lava
Hakkoda 2nd-stage Pyroclastic Flow Deposit
Hakkoda TE-1 Tephra
Minami-Hakkoda 3rd-stage Lava and Pyroclastic Rocks
Tsutagawa Pyroclastic Deposit
Hakkoda 1st-stage Pyroclastic Flow Deposit
Minami-Hakkoda 2nd-stage Lava and Pyroclastic Rocks
Okogawazawa Debris Flow Deposit
Osegawa Pyroclastic Flow Deposits
Minami-Hakkoda 1st-stage Lava and Pyroclastic Rocks
Hakkoda somma lava
Hakkodachuokakokyu lava
Towada caldera
Towada-Hachinohe Pyroclastic Flow Deposit
Towada-Ofudo Pyroclastic Flow Deposit
Towada-Okuse Pyroclastic Flow Deposit
Aobunayama Pyroclastic Rocks and Lava
Ohanabeyama Lava
Towada Caldera-forming Stage Tephra Group
Towada Hachinohe Fall Tephra
Towada Biscuit 2 Tephra
Towada Kirida Tephra
Towada Godo Tephra
Towada Kibidango Tephra
Towada Red Pumice Tephra
Okiura caldera
Aoni Tuff
Nurukawa Debris Flow Deposit Member
Anamizuzawa Basalt
Anamizuzawa Lithic Tuff
Okiura Dacite
Oguni Lacustrine Deposit
Rokumantai Formation
Inaritai Lacustrine Deposit
Kuroishi Fan Deposit
Owani Lacustrine Deposit
Oirasegawa Pyroclastic Rock
Nenokuchi Lacustrine Formation
Takamoriyama Formation
Hakkoda Taktoge Pyroclastic Flow Deposit
Urushihata Terrace Deposit
Shichinohe Terrace Deposit
Towada Terrace Deposit
Koiwaki volcano
Gankisan lava
Takadate Tephra Group
Towada T-22 Tephra
Towada SP Tephra
Towada Okoshi 2 Tephra
Towada T-17 Tephra
Towada Aosuji Tephra
Towada T-15 Tephra
Towada Kasutera Tephra
Towada Sc1 Tephra
Toya Pyroclastic Flow Deposit
Towada Zarame 2 Tephra
Towada Zarame 1 Tephra
Tengutai Tephra Group
Towada T-6 Tephra
Towada T-5 Tephra
Towada T-4 Tephra
Towada T-3 Tephra
Towada Nukamiso Tephra
Hakkoda Shirobeta Tephra
Old Tephra Group
Hakkoda TE-1 Tephra
Kiyose 1 Tephra
Kiyose 2 Tephra
Kiyose 3 Tephra
Kiyose 4 Tephra
Jizodaira Tephra
Kiyose 5 Tephra
Kiyose 6 Tephra
Kiyose 7 Tephra
Kiyose 8 Tephra
Kiyose 9 Tephra
Kiyose 10 Tephra
Kiyose 11 Tephra
Kiyose 12 Tephra
Kiyose 13 Tephra
Kiyose 14 Tephra
Tenmadate pumice bed
Hiuchidake volcano
Lower Hiuchidake Lava
Okawajiri Lava
Sugenoshiri Tuff Breccia
Hamana Formation
Nodai Formation
Ohodake Andesites
Pleistocene-Holocene
Hiuchidake volcano
Kuromoriyama Lava
Upper Hiuchidake Lava
Osorezan volcano
Chuokakokyu lava
Maruyama lava
Otsukushiyama lava
Shojiyama lava
Kamabuseyama lava
Tsurugiyama Lava
Tsurugiyama Agglomerate
Shozugawa Tuff Breccia
Asahinadake volcano
Asahinadake Lava
Iwakisan volcano
Iwakisan Volcaniclastic Rocks
Central cone
Parasitic cone
Younger stratovolcano
Older stratovolcano
Somma lava
Akakurazawa Mudflow Deposit
Yamadano Formation
Holocene (10-0 ka)
Towada caldera
Towada-Kemanai Pyroclastic Flow Deposit
Towada-a Tephra
Towada-b Tephra
Towada Post-caldera Stage Tephra Group
Towada-Chuseri Pyroclastic Fall Deposit
Utarube Tuff
Kanagasawa Pumice Fall Deposit
Chuseri Pumice Fall Deposit
Towada D' Tephra
Towada Nanbu Tephra
Kaimori volcanic ash
Nanbu pumice
Towada Ninokura Tephra Group
Shimokirida Terrace Deposit
Akedo Terrace Deposit
Dekijima formation
Aira-Tn tuff bed (AT)
Hk-J1 Tephra
Hk-J2 Tephra
Hk-J3 Tephra
Baitoushan-Tomakomai Tephra
Hk-1 Tephra
Hk-2 Tephra
Hk-3 Tephra
Hk-4a Tephra
Hk-4b Tephra
Hk-5a Tephra
Hk-5b Tephra
Hk-5c Tephra
Hk-5d Tephra
Hk-5e Tephra
Investigation in progress
Goshikiiwa tuff bed
Kamikitachubu tuff bed
Kamikitajobu tuff bed
Tsurugaoka formation
Shibamoriyama volcanic rocks
Rokkakuzawa tuff bed
Hisada formation
Kuzukawa formation
Owasawa formation
Pre-Hakkoda pumice flow deposit
Geological structures
Tsugaru fault
Nyunai fault
Shimokita fault
Noheji fault
Omagoshi fault
Asaseishi fault
Otose anticline
Oma anticline
Ajigasawa anticline
Kodomari syncline
Yotsutaki dome
Hakamagoshi dome
Umagami dome
Tairadate dome
Wadagawa dome
Nakuidake dome