How To Use Claystone In A Sentence

Sequence III extends from the base of Seam 4A to the base of the bauxitic claystone beneath Seam 2.
Sequence IV includes strata from the base of the bauxitic claystone below Seam 2 of the Heshan Formation to the top of the Dalong Formation.
Bear images were carved into blocks of argillite, claystone, and wood or sculpted from clay, with the creative three-dimensional transformations displaying a remarkably naturalistic style.
This facies comprises interlaminated to interbedded, dark grey to black carbonaceous claystone and coaly stringers that often grade vertically and laterally into economically exploitable coal seams.
Pyritic nodules, up to 1 cm in diameter, with internal radial structure, are abundant in the claystones.

It is a 34 million year old assemblage of fossil plants preserved in volcanic ash claystones. Archive 2006-10-01
The coastal lagoonal deposits are represented by bauxitic claystones resting on the undulating top of thick-bedded limestones.
The conglomerate is overlain by a claystone-dominated fossiliferous interval, which contains spirorbid worm tubes, abundant conchostracans, plant debris, fusain, and a pygocephalomorph-bearing limestone.
This surface and the overlying bauxitic claystones are broadly distributed across most of central Guangxi, including the Heshan coalfield.
The sequences are characterized by thin laminated marlstones, calcareous mudstones, claystones, shales and some thin coal beds.