Martin Bridge Formation

Geology

Members: unnamed (23), Hurricane Creek (1), Scotch Creek (1)

Lithologies: mudstone (1), "shale" (8), lime mudstone (2), packstone (2), "reef rocks" (1), "limestone" (16)

Paleoenvironments: carbonate indet. (3), shallow subtidal indet. (13), reef, buildup or bioherm (4), offshore (3)

Age range: base of the Tuvalian to the top of the Sevatian or 233.60000 to 205.70000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Carnian237.0 - 227.3USA (Oregon) (49770 49771 101156)
Carnian - Norian237.0 - 205.7USA (Oregon) (41468 61743 100249 100517)
Tuvalian233.6 - 227.3USA (Oregon) (100362)
Lacian227.3 - 215.38USA (Oregon) (33294 36755 38055 61744 85525)
Norian227.3 - 205.7USA (Oregon) (38063 100506 100507 100508 100509 100510 100511 100512 100513 100514 101367 140303)
Norian - Rhaetian227.3 - 201.4USA (Idaho) (99505)
Alaunian215.38 - 211.18USA (Oregon) (61745)
Sevatian211.18 - 205.7USA (Idaho) (38377)