Henry Clay | clay | Henry Clay Frick | Jars of Clay | Clay Aiken | formation | Clay Mathematics Institute | London Clay | Clay | Clay Center, Kansas | Andrew Dice Clay | Lucius D. Clay | Command (military formation) | Jack Clay | Elliot Formation | Clay Shaw | Clay Matthews III | U.S. Men's Clay Court Championships | Tansem Township, Clay County, Minnesota | Lance Formation | Holton-le-Clay | Crato Formation | Clay v. United States | Clay Township | Clay Shirky | Clay Bennett | Chinle Formation | B. Clay Moore | William Lacy Clay, Jr. | Two Medicine Formation |
The Hastings Beds are divided into three formations: Tunbridge Wells Sand Formation 130–400 ft; Wadhurst Clay Formation 100–230 ft, shales with bands of sandstone and iron ore; and the Ashdown Formation 160–700 ft; sandstones.