"Ward's Phenomena"

Brownish gray, kerogen-rich; commercial oil source.

Cemented glacial gravel.

Small, rounded pebbles and tightly cemented granules.

Brownish black, intermediate stage between peat and bituminous coal.

Gray with line crinoid columnal fragments.

Gray to buff, with numerous ooliths and fossil fragments.

Typical green-gray, fissile, clay-rich.

Well-cemented, medium-grained orthoquartzite.

Light gray, fine small clasts.

Buff, coarse, crystalline “Austin Marble” with shell casts and molds.