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Profile Number 30

Laboratory number: 0977 A study of the land in the Catchment of Gippsland Lakes - Vol 2 - Soil profile 30Profile Description
Site number:351A10 - 10 cmDark brown (7.5YR 3/4) silty clay loam; strong fine (2 mm) crumb structure; earthy fabric; slightly hard when dry; many fine roots; pH 6.0; clear boundary
Classification:Northcote (1979) - Gn3.11 Stace et al. (1972) – KrasnozemB110 - 60 cmDark reddish brown (5YR 3/4) light silty clay; strong fine (8 mm) subangular blocky structure; rough-ped fabric; hard when dry; many fine roots; pH 5.7; gradual boundary
Location:Warragul 8021, grid ref. 077793 4 km N of WarragulB260 - 120+ cmDark reddish brown (2.5YR 3/4) silty clay; strong medium (15 mm) angular blocky structure becoming progressively coarser (40 - 50 mm) at depth; smooth-ped fabric; pH 5.7
Land system, component: Thorpdale, 1
Topography:Hillslope facing N, 19% gradient
Elevation:120 m
Drainage:Good
Parent material:Weathered Tertiary basalt
Vegetation:Cleared; introduced grasses with scattered Eucalyptus viminalis, E. ovata and Acacia melanoxylon
Remarks:A landslip occurs on nearby hill
LABORATORY ANALYSES 977
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
25°C
uS/cm
Cl-

%
Depth

cm
Composition

%
Al
Bl
B1
B2
B2
0 - 10
10 - 20
30 - 60
60 - 90
90 - 120
SiCL
SiL
C
26
26
12
7
10
14
14
1
32
34
16
26
27
13
26
23
67
68
83
36
36
32
47
18
20
5.8
5.5
52
100
54
62
0.014
0.009
0.006
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
6.2
0.49
16
6.2
17
200
0.097
0.07
6.1
1.8
0.5
0.3
38.5
16
5
1
1
77
B1
10 - 20
B1
30 - 60
11.6
0.11
0.05
2.8
0.4
0.04
0.3
28.1
10
1
<1
1
88
B2
60-90
B2
90 - 120
12.3
0.092
0.08
3.3
0.7
0.03
0.3
20.6
16
3
<1
2
79
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