🪨⊟

#geological layers #rock layers #lamination #schist #thin beds

🟧|🟫|⬜|🪨

#layering #geological layers #soil layers #rock layers #level #tier #horizontal layer

🌱/🪨/🦴/💎

#rock layers #strata #sedimentation #fossil record #geological layers

🟫🨳

#earth layers #geological layers #strata #ground layers #crust mantle core #three strata

🟫🟧🟨⛰️

#stratigraphy #rock layers #strata #sedimentation #geological layers