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Profile Number 64

Laboratory number: 0954A study of the land in the Catchment of Gippsland Lakes - Vol 2 - Soil profile 64Profile Description
Site number:401A10-5 cmVery dark greyish brown (10YR 3/2) silty loam; weak crumb structure; rough-ped fabric; soft when dry; pH 4.5; gradual boundary
Classification:Northcote (1979) – Dy3.22
Stace et al (1972) - Soloth
A25-20 cmDark greyish brown (10YR 4/2) silty clay loam; weak medium (10 mm) subangular blocky structure; rough-ped fabric; hard when dry; 5% quartz up to 10 mm; pH 5.5; clear boundary
Location:Bairnsdale 8422, grid ref. 598136
3 km E of Bairnsdale East
B2120-45 cmYellowish brown (10YR 5/4) medium clay; common distinct yellowish brown (<5 mm) mottles; strong coarse (20 mm) subangular blocky structure; rough-ped fabric; very hard when dry; 2% charcoal fragments up to 3 mm; pH 5.0-6.0; diffuse boundary
Land system, component: Redgum 2, 1B2245-80 cmYellowish brown (10YR 5/6-5/8) light clay; abundant distinct dark brown (>15 mm) mottles; moderate medium (10 mm) subangular blocky structure; rough-ped fabric; very hard when dry; 10% fine quartz gravel up to 3 mm; 5% ferruginous nodules up to 5 mm; pH 7.0; clear boundary
Topography:Slight depression on plain, 0% slopeB2380-100 cmDark yellowish brown (10YR 4/4) light clay’ abundant distinct dark brown (>15 mm) mottles; moderate medium (10 mm) subangular blocky structure; rough-ped fabric; very hard when dry; 10% fine quartz gravel up to 3 mm; pH 7.0; clear boundary
Elevation:20 mB24100-135 cmYellowish brown (10YR 5/8) light clay; common distinct reddish brown (<5 mm) mottles; moderate medium (10 mm) subangular blocky structure; rough-ped fabric; hard when dry; 10% fine quartz gravel up to 3 mm; pH 6.5-7.0
Drainage:Poor
Parent material:Pleistocene fine-textured alluvium
Vegetation:Most native vegetation cleared; grassland with scattered Eucalyptus tereticornis, Acacia mearnsii and A. melanoxylon
LABORATORY ANALYSES 954
Horizon
Sample
Depth

cm
Lab.
texture
Particle size distribution
Atterberg limits
1:5 soil water suspension
Clay mineralogy by x-ray diffraction
Gravel

%
Coarse
sand
% f.e.
fine sand

% f.e.
Silt

% f.e.
Clay

% f.e.
liquid
limit
%
plastic
limit
%
plasticity
index
%
linear
shrinkage
%
pH
EC
25C
S/cm
Cl-

%
Depth

cm
Composition

%
A1
0-5
SiL
2
8
47
2
27
14
5.0
5.6
0.004
30-60
Mica 30;
Illite 30;
Chlorite 40
A2
10-20
SiL
4
6
38
27
18
25
18
7
4.8
5.5
53
0.005
B21
30-45
SiCL
7
3
24
33
39
35
15
20
10
5.4
100
0.009
B22
60-80
C
5
4
20
21
53
6.0
350
0.037
B23
90-100
C
2
4
31
17
48
6.6
540
0.064
Horizon
Sample
Depth

cm
Org. C


%
Total N


%
1.3C
N
Free
Fe2O3

%
Available
HCl extract
Exchangeable cations
P
ppm
K
ppm
P
%
K
%
Ca
Mg
K
Na
CEC
Ca
% of CEC
Mg
K
Na
H
Milliequivalents/100g
A1
0-5
2.18
0.18
16
0.8
11
130
0.013
0.17
0.1
1.3
0.3
0.2
12.5
1
10
2
2
85
A2
10-20
1.01
0.092
14
0.8
4
30
0.009
0.22
1.0
1.3
0.2
0.3
10.4
10
12
2
3
73
B21
30-45
2.6
0.007
0.46
1.2
4.3
0.1
1.6
16.2
7
27
1
10
55
B22
60-80
3.9
0.008
0.48
1.5
8.5
0.2
4.9
22.0
7
39
1
22
31
B23
90-100
3.1
0.006
0.30
1.6
8.9
0.2
5.7
20.8
8
43
1
27
21
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