Halleck Formation

Geology

Members: unnamed (7)

Lithologies: siltstone (7)

Paleoenvironments: marine indet. (7)

Age range: Asselian or 298.90000 to 293.52000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Asselian298.9 - 293.52USA (Alaska) (109326 109341 109342 109343 109344 109345 109346)