South Threave Formation
Geology
Group: Drummock
Members: unnamed (2), Farden (4), Starfish Bed (1)
Lithologies: not reported (1), siltstone (1), "limestone" (5)
Paleoenvironments: marine indet. (1), carbonate indet. (5), offshore indet. (1)
Age range: Rawtheyan or 448.80000 to 445.20000 Ma