Hiraiga Formation

Geology

Group: Miyako

Members: unnamed (46)

Lithologies: not reported (3), mudstone (1), siltstone (4), sandstone (39), conglomerate (1)

Paleoenvironments: marine indet. (33), foreshore (8), shoreface (4), transition zone/lower shoreface (1)

Age range: Late/Upper Aptian or 119.57000 to 113.20000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Aptian121.4 - 113.2Japan (Iwate) (40214 40315 40553 210764 210765 210766)
Late/Upper Aptian119.57 - 113.2Japan (91256 91257 91258 91259 91260 91261 91262 91283 91284 91285 91286 91287 91288 91290 91291 91292 91293 91294 91296 91298 91301 91303 91308 91309 91310)
Late/Upper Aptian119.57 - 113.2Japan (Iwate) (65625 65626 65627 65628 65645 65646 65647 65648 91321 91322 91325 91326 91327 142443 142444 142445 142446 142453)
Late/Upper Aptian - Early/Lower Albian119.57 - 110.1Japan (Iwate) (91330)
Late/Upper Aptian - Early/Lower Albian119.57 - 110.1Japan (91253 91254)