List of geological units in Osaka prefecture

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

Photographs of geological units in Osaka prefecture

Permian (298.9-252.17 Ma)

Ultra-Tamba Belt: Kunisaki Complex; Inagawa Complex; Takatsuki Formation

Jurassic (201.3-145.0 Ma)

Tamba Belt: Minoo Complex; Shiroyama Complex; Honzanji Complex; Tano Complex; Yatsugamaruyama Formation

Cretaceous (145.0-66.0 Ma)

Ryoke Belt

Older Ryoke Granitoids: Shigisan Granodiorite; Jogo Granite; Mizuma Granodiorite; Konoyama Granite; Chichionigawa Tonalite

Younger Ryoke Granitoids: Takijiri Adamellite; Ishikiri Tonalite; Kisaichi Granite; Katano Granite; Shijonawate Granodiorite; Tsuda Granite; Taike Granite; Narukawa Granite; Katashimo Granodiorite; Katagami Granite; Omichi Granite; Taike Granite; Kogigawa Granite

Ikomayama Gabbro

Kawai Mylonite

Sennan Group

Sennan Rhyolites: Okanaka Tuff; Shimoogi Tuff; Kibitanigawa Tuff; Okumizuma Tuffaceous Sandstone; Hata Tuffaceous Sandstone; Ushitakigawa Rhyolite Lava; Sobakawa Conglomerate; W₁ Unit; W₂ Unit; W₃ Unit; W₄ Unit; W₅ Unit; W₆ Unit; W₇ Unit; W₈ Unit; W₉ Unit; W₁₀ Unit

Ogawa Andesite

Izumi Group

Northern marginal facies

Mutsuo Formation: Takihata Alternation Member; Azenotani Mudstone Member; Kasayama Conglomerate Member

Main facies: Kokawa Formation; Iwade Formation; Shintachi Formation; Kada Formation

Southern facies: Nate Formation

Arima Group: Sasori Tuff Breccia; Rurikei Formation

Kenbi Granite

Sugio Granite Porphyry

Kodaiji Quartz Diorite

Ibaragi Granitic Complex: Myoken Pluton; Nose Pluton

Mikusayama Granitic Complex

Hara Granite

Settsukyo Granite

Paleogene

Osawa Conglomerate

Miocene (23.03-5.33 Ma)

Muro Pyroclastic Flow Deposit

Kobe group

Yamabe group

Kannabi Formation

Nabeyama Andesite

Shionomiya volcanic rocks

Dakeyama volcanic rocks

Setouchi Volcanic Rocks

Nijo Group

Jogashiro Formation: Tamateyama Tuff Member; Terayama Dacite

Harakawa Formation

Donzurubo formation

Pliocene-Pleistocene

Miyakojima Formation

Pleistocene (2.58- 0.01Ma)

Osaka Group

Upper Most part: Ma 10; Ma 9; Ma 8; Ma 7

Upper part: Ma 6; Ma 5; Ma 4; Ma 3

Lower part: Ma 2; Ma 1; Ma 0; Ma -1

Lower Most part

Shodai Formation

Seika Formation

Manchidani Formation: Larix Formation

Ibaraki Formation: Hacchoike Member; Mitsuike Member

Senriyama Formation: Shinden Member; Shimakumayama Member

Shinkori Formation

Kori Formation

Ikaga Formation

Tanabe Formation: Zakuro Member; Mizutori Member

Senpoku Formation

Kokubu Formation

Sennan Formation

Inuidani formation

Fuke formation

Shitsukawa Formation

Terrace Deposits

Higher Terrace Deposits: Ma 11

Middle Terrace Deposits: Ma 12

Lower Terrace Deposits

Tanaka Formation: Ma 11 (3); Ma 11 (2); Ma 11 (1); Ma 1.7; Ma 1.5; Ma 1.3; Ma 0.5

Shinodayama Gravel Bed: Younger Shinodayama Gravel Bed; Older Shinodayama Gravel Bed

Kitadani tuff bed

Higashibata tuff bed

Fugenji tuff bed

Higashibataguchi tuff bed

Susudani-I tuff bed

Susudani-II tuff bed

Zakuro tuff bed

Inuidani tuff bed

Rotary tuff bed

Imakuma tuff bed

Lower Terrace Deposits, Nishiyama hills

Middle Terrace Deposits, Hannan

Lower Terrace Deposits, Hannan

Holocene (0.01-0 Ma)

Osakawan Formation: Umeda Formation; Nanko Formation

Namba Formation: Ma 13

Oki Tephra

Age unknown

Kabutoyama andesite

Geological structures

Arima-Takatsuki tectonic line

Koyo fault

Ashiya fault

Gosukebashi fault

Otsuki fault

Butsunenjiyama fault

Ikoma fault