Getting Dirty with SOILS

Getting Dirty with

Older than dirt????!!!!

Why Care?

I. Soil Profile

the horizons……OAEBCR

Organics:•Chelators•Increases water absorption•Releases high amounts of CO2

Diagnostic properties (B horizon)

• Texture• Structure• Color

Texture

•Structure

Diagnostic properties (B horizon)

• Texture• Structure• Color

Munsell Color Chart

I. Soil Profile II. Soil Classification A. Method: non genetic

I. Soil Profile II. Soil Classification A. Method: non genetic B. Orders: 12 total

Soil Orders

EntisolsInceptisolsMollisolsSpodosolsAlfisolsUltisolsOxisols

AridisolsVertisolsHistosolsAndesolsGelisols

Entisol

Inceptisol

Ultisols

Alfisols

Oxisol

Mollisol

Vertisol

Aridisols

Spodosols

Histosols

Gelisols

Andisols

III. Pedogenic Controls and RegimesA. Factors of Soil Formation (Jenny, 1951)

III. Pedogenic Controls and RegimesA. Factors of Soil Formation

1.Climate

1.Climate2. Biota

1.Climate2. Biota3. Parent material

1.Climate2. Biota3. Parent material4. Slope

1.Climate2. Biota3. Parent material4. Slope5. Time

III. Pedogenic Controls and RegimesA. Factors of Soil FormationB. Podzolization“refers to the removal of iron and/or aluminum from the A horizon downward to the B Horizon”

Most common when annual ppt. exceeds70 cm (27.6 in)

III. Pedogenic Controls and RegimesA. Factors of Soil FormationB. PodzolizationC. Laterization

•Intense oxidation•Organic accumulation is inhibited•Silica is leached from the system

III. Pedogenic Controls and RegimesA. Factors of Soil FormationB. PodzolizationC. Laterization D. Calcification

V. Geomorphic Sig. of Soils

fertilitybuilding foundationshydrologic responses to ppt.permanence of road construction

The contrast…….

Getting Dirty with SOILS

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