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SW61

Location: Simpson Australian Soil Classification: Melacic, Humic/Humosesquic, Semiaquic PODOSOL
Great Soil Group: podzolGeneral Landscape Description: Plateau of dissected Tertiary sediments - gently undulating plain
Site Description: Level to slightly sloping plainGeology: Hanson Plain Sand

South West Gasp Pipeline GP61 Landscape
SW61 Landscape


Soil Profile Morphology:


Surface Soil


A10-45 cmBlack (7.5YR2.5/1 moist, 7.5YR3/1 dry); loamy fine sand; apedal; pH 4.2; clear and smooth change to:
South West Gasp Pipeline GP61 Profile
SW61 Profile
A245-65/75 cmGrey (10YR5/1 moist); light grey (10YR7/1 dry); loamy medium sand; apedal; pH 4.4; abrupt and irregular change to:
Subsoil

B21h65/75-90 cmBlack (7.5YR2.5/1 moist and dry); sandy loam; massive; pH 4.2; clear and wavy change to:
B22hs90-100/110 cmVery dark brown (10YR2/2 moist); cemented sand [“coffee rock”]; massive; pH 4.5; abrupt and wavy change to:
B23s100/110 cm+Mottled yellow (2.5Y7/6 moist), yellowish brown (10YR5/8 moist) and dark red (2.5YR4/8 moist) mottling; cemented sand; massive; pH 4.8.

Key Profile Features:
  • Deep sandy profile.
  • Presence of humic and humosesquic horizons in subsoil.

Soil Profile Characteristics:

pH
Salinity Rating
Sodicity
Dispersion
Surface
(A1 horizon)
Extremely Acid
Low
Non-Sodic
None
Subsoil
(B21 horizon)
Extremely Acid
Low
Non-Sodic
None
Deeper subsoil
(at 90+ cm)
Very Strongly Acid
Low
Non-Sodic
None

South West Gasp Pipeline GP61 pHSouth West Gasp Pipeline GP61 Salinity

South West Gasp Pipeline GP61 Clay

South West Gasp Pipeline GP61 Coarse Sand

Horizon
Horizon Depth
(cm)
pH
(water)
pH
(CaCl2)
EC
1:5
NaCl
%
Exchangeable Cations
Ca
Mg
K
Na
meq/100g
A1
0-10
4.2
3.1
0.11
0.71
1.1
0.45
0.37
A2
45-70
4.4
3.6
<0.05
<0.05
0.15
0.05
0.07
B21
70-90
4.2
3.3
0.09
B22
90-105
4.5
4.1
0.1
B23
105+
4.8
4.8
0.09

Horizon
Horizon Depth
(cm)
Ex Al
mg/kg
Ex Ac
meq/100g
Field
pF2.5
Wilting Point
pF4.2
Coarse Sand
(0.2- 2.0 mm)
Fine Sand
(0.02- 0.2 mm)
Silt
(0.002- 0.02 mm)
Clay
(<0.002 mm)
A1
0-10
42
18
33.5
42.8
14.5
3
A2
45-70
<10
1.5
34.1
47.8
18.5
<1
B21
70-90
29.6
44.8
17
5.5
B22
90-105
B23
105+


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