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5 Suelo complejo de Maryland, USASuelo gredoso (loamy)

6 Suelo arcilloso con horizonte O muy notable Suelo arcilloso de zonas montañosas

7 Suelo arenosoSuelo arenoso costero

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9 Suelo franco arcilloso Clay loam soil Suelo franco arenoso Sandy loam soil Suelo franco limoso Silt loam soil

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16 Los 12 órdenes de suelos en Soil Taxonomy (USA) Gelisols - soils with permafrost within 2 m of the surface Histosols - organic soils Spodosols - acid forest soils with a subsurface accumulation of metal-humus complexes Andisols - soils formed in volcanic ash Oxisols - intensely weathered soils of tropical and subtropical environments Vertisols - clayey soils with high shrink/swell capacity Aridisols - CaCO3-containing soils of arid environments with subsurface horizon development Ultisols - strongly leached soils with a subsurface zone of clay accumulation and 35% base saturation Inceptisols - soils with weakly developed subsurface horizons Entisols - soils with little or no morphological development

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19 Mollisol Andisol

20 Entisols Aridisols

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