Grès armoricain Formation

Geology

Members: unnamed (8), Superieur (3)

Lithologies: "siliciclastic" (2), "shale" (4), sandstone (4), packstone (1), rudstone (3), "limestone" (1)

Paleoenvironments: reef, buildup or bioherm (5), shoreface (2), transition zone/lower shoreface (4)

Age range: base of the Floian to the top of the Bathonian or 477.70000 to 166.10000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Arenig478.6 - 466.0France (Ille-et-Vilaine) (20852 20860)
Arenig478.6 - 466.0France (Loire-Atlantique) (20861)
Arenig478.6 - 466.0France (Loire-Atlantique, Ille-et-Vilaine, and Manche) (20864)
Floian477.7 - 470.0France (174542 174543)
Bathonian168.3 - 166.1France (38737 38738 38739 38740 38741)