EntityQ1517796· pop 12· linked from 230 articlesboulder claySign in to savedeposit of clay, often full of boulders, formed from the ground moraine material of glaciers and ice-sheetsConnectionsclastic rockEntityUnited KingdomCountryInternational Standard Book NumberEntitysandEntitycoalEntityclayEntitygraniteEntityquartzEntitylimestoneEntitysedimentary rockEntitysandstoneEntityCarboniferousEntitygravelEntitygneissEntitykarstEntitypebbleEntitysedimentEntityGwyneddEntitycrystalline schistEntityshaleEntityCategoriesGlaciologySediments