rubble; debris; broken bricks and tiles

gravel; pebbles; small rocks formed by weathering or the action of water

sand and small broken stones; grit or pebbles

Sedimentary rock made of rounded pebbles and gravel held together by silica, clay, or other mineral substances.

grit; gravel; pebbles; sand and broken stones

A type of rock composed of broken fragments of minerals or rock cemented together by a fine-grained matrix; characterized by large, angular fragments over two millimeters in size.

gravel; a mixture of small stones and sand

A rock or boulder transported by a glacier and deposited on land with a different geological composition; erratic; pebble

small rock fragments or pebbles ejected from a volcano

pile of rubble or debris

A method of growing vegetables using gravel and nutrient-rich liquids to save fertilizer and labor

millstone grit; a type of coarse sandstone used for grinding