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Profile Number 15

Laboratory number: 1006A study of the land in the Catchment of Gippsland Lakes - Vol 2 - Soil profile 14Profile Description
Site number:727A10 - 10 cmVery dark greyish brown (10YR 3/2) light clay; common distinct reddish-brown (<5 mm) mottles; moderate fine (4 mm) subangular blocky structure; rough-ped fabric; hard when dry; pH 5.5; gradual boundary
Classification:Northcote (1979) - Uf6.12
Stace et al.(1972) - Brown Earth
B110 - 45 cmDark brown (10YR 4/3) medium clay; common distinct reddish brown (5 - 15 mm) mottles; moderate medium (8 mm) angular blocky structure; rough-ped fabric; very hard when dry; pH 5.0; diffuse smooth boundary
Location:Moe 8121, grid ref. 449395
Road cutting 20 km S of Churchill
B245 - 90 cmDark yellowish brown (10YR 4/4) medium clay; abundant distinct reddish brown (5 - 15 mm) mottles; weak coarse (25 mm) angular blocky structure; rough-ped fabric; firm when moist; pH 5.0; diffuse smooth boundary
Land system, component: Livingston, 2B390 - 150+ cmBrownish yellow (10YR 6/8) medium clay; abundant prominent pale grey (>15 mm) and abundant distinct reddish brown (5 - 15 mm) mottles; moderate fine (4 mm) angular blocky structure; rough-ped fabric; firm when moist; pH 5.0
Topography:21% slope facing SE on plateau remnant
Elevation:340 m
Drainage:Moderate
Parent material:Cretaceous mudstone and siltstone
Vegetation:Pinus radiata plantation with Cassinia aculeata, Olearia lirata and Rubus sp. in the understorey
LABORATORY ANALYSES 1006
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
0 - 10
SiCL
1
3
24
25
39
4.7
43
0.003
B1
20 - 30
SiC
0
1
24
25
41
4.7
42
0.001
B2
45 - 60
SiC
0
1
23
25
44
59
32
27
14
4.6
33
0.001
B3
90 - 120
C
0
1
12
18
57
4.6
25
0.003
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 - 10
4.5
0.30
20
3.0
8
240
0.022
0.20
0.4
0.7
0.6
0.2
36.9
1
2
2
1
94
B1
20 - 30
2.7
0.21
17
3.2
9
140
0.016
0.21
0.2
0.2
0.3
0.1
26.6
1
1
1
<1
97
B2
45 - 60
3.3
0.012
0.21
0.06
0.07
0.2
0.06
20.7
<1
<1
1
<1
99
B3
90 - 120
5.3
0.009
0.19
0.2
0.09
0.2
0.07
18.0
1
1
1
<1
97
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