bright colorful letter d, layers blocks like sandwich, stone balancing or rock stacking. modern cartoon monogram for kid

playful childish children funny simple cut sliced geological horizon stratigraphy lithology sedimentary stratum soil paleosoils strata sediment letter design style headline type typo typographic layout cutting rocks bright colorful layers blocks sandwich stone balancing stacking modern cartoon monogram book fun logo vector illustration kid joyful logotype sign symbol d