Front | Back |
O Horizon
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Organic horizon
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A Horizon
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Top mineral layer
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E Horizon
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Eluviation: process of leaching or removal (lighter color than A; clay and o.m. removed)
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B Horizon
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Illuviation: process of accumulation from above horizons (clay and o.m.)
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C Horizon
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Parent material (unconsolidated)
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R Horizon
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Consolidated rock
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A subhorizon
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Highly decomposed o.m.
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B subhorizon
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Buried layer
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C subhorizon
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Concretions
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D subhorizon
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Physical root restriction
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E subhorizon
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Intermediately decomposed o.m.
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F subhorizon
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Frozen soil
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G subhorizon
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Gleying: presence of FeO x H2O (bluish-grey color)
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H subhorizon
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Humus accumulation
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I subhorizon
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Slightly decomposed o.m.
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