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SW68

Location: Narangrook West

Australian Soil Classification: Bleached-Mottled, Eutrophic, Brown CHROMOSOL (very thick loamy surface horizons)

General Landscape Description: Gently inclined undulating rises.
Site Description: Crest.
Geology: Hanson Plain Sand

Image: SW68 Landscape
SW68 Landscape


Soil Profile Morphology:



Surface Soil


A10-10 cmDark grayish brown (10YR4/2 moist), light brownish gray (10YR6/2 dry); sandy loam; apedal; very weak consistence; pH 5.2:
South West Gasp Pipeline SW68 Profile
SW68 Profile. Note: Surface (A1) horizon has been stripped from the soil profile.
A21eg10-60 cmVery pale brown (10YR7/4 moist), light gray (10YR7/2 dry); sandy loam; abrupt smooth change to:
A22ce60-80 cmVery many (80%) irregular rounded coarse (10-30 mm) ferromanganiferous nodules in a very pale brown (10YR7/4 moist), light gray (10YR7/2 dry) sandy loam matrix:
A380-90 cmYellow/gray mottled; coarse sandy loam with fine distinct red mottles, clear change to:
Subsoil

B21tg 90-150 cmMottled brown (7.5YR4/4 moist) (50%) and strong brown (7.5YR5/8 moist) (50%); tough heavy clay; firm (moist) consistence; pH 6.2:
B22tg150-220/230 cmBrown (7.5YR4/6 moist) and strong brown (7.5YR5/6 moist) and dark brown (7.5YR3/2 moist) and gray (7.5YR5/1) coatings on ped faces; heavy clay; firm (moist) consistence; pH 6.0; abrupt change to:
C220/230 cm+Hanson Plain Sand; red and yellow mottled weekly cemented coarse sand, diggable with spade; very many (80%) irregular rounded coarse (10-30 mm) ferromanganiferous nodules in a very pale brown (10YR7/4 moist), light gray (10YR7/2 dry) sandy loam matrix.

Key Profile Features:

Soil Profile Characteristics:

pH
Salinity Rating
Surface
(A1 horizon)
Strongly Acid
Very Low
Non-Sodic
None
Subsoil
(B21 horizon)
Slightly Acid
Very Low
Non-Sodic
None
Deeper subsoil
(at 150 - 220 cm)
Moderately Acid
Very Low
Non-Sodic
None


Image: SW68 Graphs

The surface is strongly acid. The subsoil is slightly acid becoming moderately acid with depthSalinity rating is very low throughout the profile.The soil is non sodic throughout.Clay levels jump markedly at the surface / subsoil boundary.

Horizon
Sampling Depth
(cm)
pH
(water)
pH
(CaCl2)
EC
1:5
Organic Carbon
%
Nitrogen %
Exchangeable Cations
Ca
Mg
K
Na
meq/100g
A1
0-10
5.2
4.5
0.13
3.6
0.23
3.2
0.57
0.31
0.22
B21g
100-120
6.2
5.7
0.08
3.3
9.7
0.15
0.43
B22g
170-190
6
5.6
0.08
1.9
11
0.14
0.62

Horizon
Sampling Depth
(cm)
Exchangeable Aluminium
mg/kg
Exchangeable Acidity
meq/100g
Field Capacity
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
48
13
19.6
6.6
20.9
49.7
11.5
9.5
B21g
100-120
<10
10
43
30.3
6.1
10
2.5
79
B22g
170-190
<10
10
44.9
31.6
4.3
11.4
3.5
78.5



Notes:
Profile Described By: Richard McEwan (March1999).
CC BY 4.0 AU

This page contains material sourced from the Victorian Resources Online (VRO) website, originally published by the State Government of Victoria.

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