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List of geological units in Oita prefecture

A list of stratigraphic units, igneous bodies, and geological structures reported from Oita prefecture, Kyushu region, Kyushu island, Japan.

Photographs of geological units in Oita prefecture

Silurian-Triassic
Chichibu belt
Urashiro formation
Silurian-Carboniferous
Chichibu belt
Usuki formation
Permian (298.9-252.17 Ma)
Asaji Metamorphic Rocks
Hikata Unit
Triassic - Jurassic
Southern Chichibu Belt
Tsukumi Unit
Youra Unit
Youra Formation
Enoura Formation
Chinnanzan Unit
Okugawachi Unit
Ozono Unit
Hikonouchi Unit
Shakumasan Unit
Yukagi Unit
Jurassic (201.3-145.0 Ma)
Tsui Formation
Jurassic - Cretaceous
Torinosu Group
Cretaceous (145.0-66.0 Ma)
Sanbagawa belt
Onogawa Group
Umibe? formation
Ryozen Formation
Soyo Formation
Kurosegawa Belt
Pre-Sotoizumi Group
Sukubo Formation
Asaji Metamorphic Rocks
Ultramafic Unit
Chokai Unit
Nioki Granite
Watada Granodiorite
Kinegaharu Diorite
Yamanaka Granodiorite
Cretaceous-Paleogene
Northern Shimanto Belt
Tonegawa Unit
Paleogene
Mitate formation
Neogene
Sobosan volcanic rocks
Miocene (23.03-5.33 Ma)
Usa group
Kankaiji volcanic rocks
Tsukinoki formation
Kitasakamoto formation
Hikosan? formation
Ohno Volcanic Rocks
Koguraki Tuff
Miyakeyama Pyroclastic Flow Deposit
Daisangoyama Andesite
Shiraiwasan Pyroclastic Flow Deposit
Mure Conglomerate Bed
Miocene-Pliocene
Kusu group
Nogami formation
Hosenji formation
Pliocene (5.33-2.58 Ma)
Togamitake volcanic rocks
Tsubusagawa Formation
Pliocene-Pleistocene
Hohi volcanic products
Chikushi lava
Shakagatake group
Yabakei formation
Oita group
Oga formation
Hiji formation
Pleistocene (2.58- 0.01Ma)
Haneyama rhyolite (Haneyama lava)
Oita group
Tsurusaki formation
Kokonoe group
Ozai formation
Joharu formation
Yabakei welded tuff bed
Chikushi lava
Takanosuyama lava
Kanagoe lava
Haneyama lava
Ojika volcanic rocks
Otobaru volcanic rocks
Himeshima formation
Karato formation
Maruishibana formation
Himeshima volcano
Morose lava
Hashiragadake lava
Yahazu lava
Shiroyama lava
Darumayama lava
Maki formation
Hamawaki formation
Yufugawa pumice flow deposit
Sanin volcanic rocks
Early Sanin volcanic rocks
Omureyama lava
Futagosan lava (Futagosan andesites)
Yajibara lava
Sendodake lava
Imiyama lava
Inomureyama lava
Minakuchiyama volcanic rocks
Ogoshiyama volcanic rocks
Takasakiyama volcanic rocks
Late Sanin volcanic rocks
Miikehira lava
Okudaiyama lava
Akane formation
Sakaigawa volcanic rocks
Yufudake volcanic rocks
Tsurumidake volcanic rocks
Kobirayama volcanic rocks
Ohirayama Otokodake? volcanic rocks
Kabushidake lava
Oninomiyama volcanic rocks
Handa pumice flow deposit (Narukogawa pumice flow deposit)
Aso welded tuff bed
Aso-1 volcanic products (Aso-1)
Aso-1 pumice bed
Aso-1 pyroclastic flow deposit
Aso-2 volcanic products (Aso-2)
Aso-2V pumice bed
Aso-2R pyroclastic flow deposit
Aso-2TL pumice bed
Aso-2A pyroclastic flow deposit
Aso-2B pyroclastic flow deposit
Aso-2T scoria bed
Aso-3 volcanic products (Aso-3)
Aso-3W pumice bed
Aso-3A pyroclastic flow deposit
Aso-3B pyroclastic flow deposit
Aso-3C pyroclastic flow deposit
Aso-4 volcanic products (Aso-4)
Aso-4A pyroclastic flow deposit
Aso-4B pyroclastic flow deposit
Hyugami lava
Imaichi pyroclastic flow deposit
Miyagi pyroclastic flow deposit
Tamaraigawa lava
Takasumi tuff breccia
Onisugi tuff breccia
Hikosan lava
Investigation in progress
Ryoke belt
Ryoke metamorphic rocks
Yakkangawa formation
Setouchi volcanic rocks
Maji andesites
Kurokiyama formation
Inabagawa lahar deposit
Aso volcano
Center cone deposit
Kuju pumice flow deposit
Kokonoe volcano
Oike lava
Tonohara lava
Dainoyama lava
Kitasenri lava
Kurotake lava
Mimatayama lava
Kujusan lava
Kuroiwasan lava
Narukoyama lava
Shirakuchidake lava
Taisenzan somma lava
Gakurokuji lava
Komekubo lava
Taisenzanminami lava
Hiijidake lava
Iriyama lava
Takanosu lava
Kamiyuzawa? lava
Shimoyuzawa? lava
Nukumi lava
Matsubara lava
Taio group
Gose formation
Osoba formation
Suiseigan formation
Nakatsue granites
Ishiba conglomerate
Maetsue group
Shitazuri lava
Sakanoshita pyroclastic flow deposit
Akaishi andesites
Ono rhyolites
Geological structures
Median tectonic line
Oita-Kumamoto tectonic line
Usuki-Yatsushiro tectonic line
Tsui-Kiura tectonic line
Asamigawa-Yufuin fault
Tateishi graben