Aldrich Mountains Group

Geology

Formations: Fields Creek (6)

Lithologies: mudstone (3), "shale" (1), "limestone" (1), chert (1)

Paleoenvironments: basinal (siliceous) (4), deep-water indet. (2)

Age range: base of the Ladinian to the top of the Norian or 242.00000 to 208.50000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Ladinian242.0 - 237.0USA (Oregon) (96068)
Carnian237.0 - 228.0USA (Oregon) (96067)
Norian228.0 - 208.5USA (Oregon) (96069 96114 96116 96131)