Petrified Forest Formation

Geology

Group: Chinle

Members: unnamed (2), Correo Sandstone (1), Mesa Montosa (1), Painted Desert (8)

Lithologies: not reported (3), siltstone (1), sandstone (8), conglomerate (1)

Paleoenvironments: terrestrial indet. (12)

Age range: base of the Norian to the top of the Oligocene or 228.00000 to 23.03000 Ma