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Profile Number 12

Laboratory number: 0984A study of the land in the Catchment of Gippsland Lakes - Vol 2 - Soil profile 12Profile Description
Site number:576A10 - 9 cmVery dark greyish brown (10YR 3/2) stony loam; weak crumb structure; rough-ped fabric; soft when dry; 40% bedrock fragments (10 mm); pH 3.5; clear boundary
Classification:Northcote (1979) - Um1.42 Stace et al. (1972) – LithosolB 9 - 71 cm Yellowish brown (10YR 5/6) stony clay loam; apedal; slightly hard when dry; 40% bedrock fragments (18 mm); pH 4.5
Location:Maffra 8222, grid ref. 722483 500 m S of Bennison LookoutR71+ cmBedrock
Land system, component: Carrabungla, 1
Topography:Mid-slope of mountain, WSW aspect, 45% gradient
Elevation:960 m
Drainage:Good
Parent material:Devonian rhyolite and rhyodacite
Vegetation:Shrubby open forest II: Eucalyptus sieberi, E. dives and E. rubida and with Acacia obliquinervia, Cassinia longifolia, Platylobium formosum and Oxylobium ellipticum in the understorey. Sparse herb layer, abundant leaf litter.
LABORATORY ANALYSES 984
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
uS/cm
Cl-

%
Depth

cm
Composition

%
Al
B
B
0 - 9
20 - 30
30 - 60
SiL
SiL
SiL
39
33
28
22
13
16
18
25
21
25
38
31
15
21
24
4.2
4.9
5.0
72
42
31
0.003
0.002
0.002
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
Al
0 - 9
5.7
0.21
35
1.0
10
160
0.009
0.14
0.06
0.06
0.6
0.1
56.7
<1
<1
1
<1
99
B
20 - 30
1.7
0.078
28
1.2
4
200
0.007
0.10
0.07
0.1
0.7
0.09
25.4
<1
<1
3
<1
97
B
30 - 60
1.4
0.008
0.14
0.07
0.3
0.6
0.1
18.9
<1
2
3
1
94
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