Marjum Limestone Formation
Geology
Members: unnamed (7), lower (1)
Lithologies: "shale" (6), packstone (1), "limestone" (7)
Paleoenvironments: marine indet. (2), carbonate indet. (2), offshore ramp (1), submarine fan (1)
Age range: Menevian or 504.50000 to 499.50000 Ma