⬛🟫🪨

#soil profile #soil horizons #soil layers #pedology #topsoil #subsoil #bedrock #soil structure

🟫⬛️🪨

#geological strata #earth layers #soil profile #rock layers #cross-section layers #substrate #deposition

⚪🧱🪱

#calcium carbonate #cemented earth #mineral deposit #soil profile #white crust