Leduc Formation
Geology
Group: Woodbend
Members: unnamed (6), Cooking Lake (1), Middle (1), Upper (3)
Lithologies: "shale" (1), grainstone (3), "limestone" (8)
Paleoenvironments: peritidal (1), shallow subtidal indet. (2), reef, buildup or bioherm (6), perireef or subreef (2)
Age range: Frasnian or 382.31000 to 372.15000 Ma