sapric (well decomposed)
buried soil horizon
hemic (moderately decomposed)
frozen soil (permafrost)
gleyed soil (gray color due to low O-reduction of Fe)
accumulation of humus (OM other than in A or O)
plowed (used only with A master horizon)
accumulation of carbonates
accumulation of Fe & Al oxides (oxic-very old)
silica accumulation (very old/weathered soil)
sesquioxides (accumulation of Fe & Al-red color)
slickensides (shiny clay wedges)
clay accumulation (clay films)
color or structure development
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