Soil Order

Entisol

Recent soil

Minimal Development

Young soil

A/C or A/R profile

Vertisol

Inverted- soils with high clay content.

Inceptisol

soil shows the beginning of horizon, little or no illuviation

Aridisols

Arid regions, contains carbonate

Salt accumulates on the surface and in the subsurface

Mollisoils

Soils with thick, draft, soft surface

high base saturation

Spodosols

acid sandy soils w/ thick E and red B ochric and spodic

Alfisoil

Fertile forested soils with ochric and argili base

Ultisoils

Soils more weatherd

Low base saturation

Histosols

Peat soils- organic material

Muck

Andisols

Soils from volcanic ejecta

Oxisols

Soils with oxic horizon

Very weathered soils

Low pH

Gelisols

New order of 1998

soils with permafrost