earth and stones; soil and rocks
Refers to a mixture of earth, soil, sand, and stones, often in the context of natural disasters (landslides, debris flows) or construction materials.
Heavy rain caused a debris flow.
A large amount of earth and stones was carried away from the construction site.
The earth and rocks on the mountainside collapsed due to the heavy rain.
The workers removed the earth and rocks blocking the road.
debris flow; mudslide; landslide
magnesite
Compound of 土 (do, 'earth, soil') and 石 (seki, 'stone'). The reading is on'yomi, as expected for a Sino-Japanese compound.