"The Mystery of Lyle and Louise"

Red, medium, to coarse-grained iron oxide cement; shows hematite bands.

Light gray, fine small clasts.

Gray to brown mudstone with abundant silt.

Red-brown to gray, coarse-grained, containing feldspar and mica.

Gray to buff, with numerous ooliths and fossil fragments.

Dense and massive.

Hematite-cemented quartz; orthoquartzite.

Typical green-gray, fissile, clay-rich.

Brownish black, intermediate stage between peat and bituminous coal.

Gray and poorly sorted, with a gritty texture.

Dark, waxy, bitumin-rich.