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Two Spodosols in Alachua County, FL
Geoffrey LokutaEnvironmental PedologyMarch 10, 2012
Alachua Co., FL
-Northeast of Gainesville, FL-Austin Cary Memorial Forest
Study Site Location
Study Site Location
Soil pit
Road
100 feet
NRCS Map Units
19
14
08
14- Pomona Sand
08- Millhopper Sand
Soil pit
Road
Study Site Location
Soil 2
Soil 1
Soil 1 Landscape
Soil 1 Profile
Position of Site: UplandParent Material: MarineSoil Slope: Nearly Level (0-2%)Surface Runoff: Very SlowErosion Potential: Very Low
Epipedon: OchricSubsurface Horizon: Albic, Spodic, ArgillicOrder: Spodosol
A- 0 to 6 cm; 10YR 3/1; sand; single grained; loose; clear wavy boundary E1- 6 to 17 cm; 10YR 5/2; sand; single grained; loose; clear wavy boundary
E2- 17 to 54 cm; 10YR 6/1; sand; single grained; loose; clear wavy boundary
Bh- 54 to 69 cm; 7.5YR 4/2; sand; single grained; loose; clear wavy boundary BE- 69 to 85 cm; 10YR 5/3; sand; single grained; loose; abrupt wavy boundary
E’- 85 to 121 cm; 10YR 8/1; sand; single grained; loose; abrupt wavy boundary
Btg1- 121 to 146 cm; 10YR 5/2; loamy sand; weak subangular blocky; very friable; clear wavy b. Btg2- 146 to 169 cm; 10YR 6/2; sandy clay loam; weak subangular blocky; very friable
Horizon LD/LD without spoil (cm)
B dist
B topo
Texture
Dom color
Str grade
Str shape
Consist
C (spoil) 21 a s ls 10 YR 6/2 sl sg l
A 27 6 c w s 10 YR 3/1 sl sg l
E1 38 17 c w s 10 YR 5/2 sl sg l
E2 75 54 c w s 10 YR 6/1 sl sg l
Bh 90 69 c w s 7.5 YR 4/2
sl sg l
BE 106 85 a w s 10 YR 5/3 sl sg l
E’ 142 121 a w s 10 YR 8/1 sl sg l
Btg1 167 146 c w ls 10 YR 5/2 wk sbk vfr
Btg2 190 169 scl 10 YR 6/2 wk sbk vfr
Soil 2 Landscape
Soil 2 Profile
Position of Site: UplandParent Material: MarineSoil Slope: Nearly Level (0-2%)Surface Runoff: Very SlowErosion Potential: Very Low
Epipedon: OchricSubsurface Horizon: Albic, Spodic, ArgillicOrder: Spodosol
A- 0 to 11 cm; 10YR 3/1; sand; single grained; loose; clear wavy boundary
AE- 11 to 45 cm; 10YR 6/1; sand; single grained; loose; clear wavy boundary
E- 45 to 76 cm; 10YR 8/1; sand; single grained; loose; abrupt irregular boundary Bh1- 76 to 83 cm; 7.5YR 3/2; sand; single grained;
loose; clear wavy boundary Bh2- 83 to 90 cm; 5YR 3/3; sand; single grained; loose; clear wavy boundaryBE- 90 to 108 cm; 10YR 6/3; sand; single grained; loose; clear wavy boundary E’- 108 to 160 cm; 10YR 8/1; sand; single grained; loose; clear wavy boundary
Btg1- 160 to 187 cm; 10YR 6/2; loamy sand; weak subangular blocky; very friable; clear wavy boundary
Btg2- 146 to 169 cm; 7.5YR 3/2; loamy sand; weak subangular blocky; very friable
Horizon LD (cm)
B dist
B topo
Texture Dom color
Str grade
Str shape
Consist
A 11 c w s 10 YR 3/1
sl sg l
AE 45 c w s 10 YR 6/1
sl sg l
E 76 a I s 10 YR 8/1
sl sg l
Bh1 83 c w s 7.5 YR 3/2
sl sg l
Bh2 90 c w s (maybe ls)
5 YR 3/3 sl sg l
BE 108 c w s 10 YR 6/3
sl sg l
E’ 160 c w s 10 YR 8/1
sl sg l
Btg1 187 c w ls 10 YR 6/2
wk sbk vfr
Btg2 200 ls 7.5 YR 3/1
wk sbk vfr
Soils Comparison
Soil Property/ Interpretation Soil 1 Soil 2
Infiltration Rate High HighHydraulic Conductivity Moderate HighAvailable Water Low Very LowSHWT Depth 50 to <100 cm 50 to < 100 cmDwellings w/ Basement Limitation
Severe Severe
Septic Tank Absorption Fields Limitation
Severe Severe
Local Roads and Streets Limitation
Slight Slight
QUESTIONS?