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List of geological units in Okinawa prefecture

A list of stratigraphic units, igneous bodies, and geological structures reported from Okinawa prefecture, Ryukyu islands, Japan.

Photographs of geological units in Okinawa prefecture

Paleozoic

Ishigaki group

Permian (298.9-252.17 Ma)

Tonaki formation

Jurassic (201.3-145.0 Ma)

Tomuru Formation

Fusaki formation

Southern Chichibu Belt

Iheya Unit

Maedake Formation

Tana Formation

Ie Unit

Cretaceous (145.0-66.0 Ma)

Southern Chichibu Belt

Motobu Unit

Hedomisaki Formation

Motobu Formation

Nakijin Formation

Yonamine Formation

Wakugawa Formation

Northern Shimanto Belt

Nago Formation

Eocene (56.0-39.0 Ma)

Miyara formation

Nosoko formation

Southern Shimanto Belt

Kayo Formation

Neogene

Yamagusuku formation

Shimajiri group

Ogami formation

Miocene (23.03-5.33 Ma)

Yaeyama Group

Iriomote Formation

Miocene-Pliocene

Aradake formation

Pliocene (5.33-2.58 Ma)

Aka formation

Maja formation

Shimajiri Group

Yonabaru Formation

Oroku member

Tomigusuku Formation

Uegusukudake formation

Uegusuku formation

Pliocene-Pleistocene

Shimajiri Group

Shizato Formation

Chinen Formation

Quaternary

Urabu formation

Sand dune deposit

Pleistocene (2.58- 0.01Ma)

Ryukyu Group

Ryukyu limestone

Minatogawa Formation

Naha Formation

Unit 4

Subunit 4R

Unit 3

Subunit 3R

Subunit 3C

Unit 2

Subunit 2R

Subunit 2C

Unit 1

Subunit 1R

Itoman Formation

Kourijima Formation

Unit 4

Unit 3

Unit 2

Unit 1

Sobe Formation

Unit 5

Unit 4

Unit 3

Unit 2

Unit 1

Yokatsu Formation

Uchihana formation

Nakaoji formation

MY-Unit 1

MY-Unit 2

MY-Unit 3

MY-Unit 4

MY-Unit 5

Ohama Formation

Pumera Clay Formation

Yonaguni formation

Daito Formation

Unit 3

Unit 2

Unit 2b

Unit 2a

Unit 1

Holocene (0.01-0 Ma)

Iribishi limestone

Kaigunbo Formation

Age unknown

Omoto granite

Sonai formation

Old sand dune deposit

Kerama Formation