Blackleaf Formation
Geology
Group: Colorado
Members: unnamed (2), Flood (1), Vaughn (2)
Lithologies: mudstone (1), "shale" (2), siltstone (1), sandstone (1)
Paleoenvironments: wet floodplain (2), "floodplain" (1), fluvial-lacustrine indet. (1), fluvial-deltaic indet. (1)
Age range: Late/Upper Albian or 106.30000 to 100.50000 Ma