Clays and claystones, marlstones Claystones and clays Claystones and clays Clastic rocks and fine sediments Clays and shales (combustible) Clays and claystones, sandstones, conglomerates Clays, sands, gravels, marls and claystones, sandstones, conglomerates Claystones, sandstones and clays Claystones, sandstones, limestones and clays