Ryukyu Formation, Group
Geology
Formations: unnamed (77), Chinen (4), Haneji (4), Hateruma (2), Itokina (1), Miyako-jima (16), Naha (70), Nakoshi (1), Okierabu-jima (1), Sobe (25), Takanasaki (2), Takigawa (2), Wan (1)
Members: unnamed (11)
Lithologies: not reported (4), claystone (1), siltstone (4), sandstone (17), marl (1), travertine (1), grainstone (66), "reef rocks" (2), rudstone (1), framestone (1), "limestone" (193)
Paleoenvironments: marine indet. (12), carbonate indet. (23), lagoonal/restricted shallow subtidal (67), reef, buildup or bioherm (98), perireef or subreef (8), coastal indet. (8), deep-water indet. (1), fissure fill (4)
Collections