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CLRA15

CLRA15 landscape
Hills of the Deans Marsh district
    Site Code
CLRA15


CLRA15 profile
Haplic, Self-mulching, Black Vertosol/Melacic, Eutrophic Brown Kandosol
    Location
Deans Marsh (Cemetery Road), Otway Ranges, south-west Victoria
    Landform
Hills
    Geology
Palaeogene Eastern View Formation: fluvial gravel, sand, clay, brown coal
    Element
Valley flat
    Slope
0–1%
    Aspect
North-west
Horizon
Depth (cm)
Description
A1
0–25Very dark grey (10YR3/1), dark grey (10YR4/1 dry); light clay; strong medium subangular blocky structure; rough ped fabric; very firm consistence (dry); clear smooth boundary to:

B21t
25–55Very dark grey (10YR3/1), light brownish grey (10YR6/2 dry); medium heavy clay; strong medium prismatic, parting to medium angular blocky structure; smooth ped fabric; strong consistence (dry); slickenside cutans; clear smooth boundary to:

B22gt
55–90Dark grey (10YR4/1) with many medium distinct yellowish brown (10YR5/6) mottles; medium heavy clay; apedal massive structure; slickenside cutans; strong consistence (dry); clear smooth boundary to:

B23gt
90–120+Grey (10YR5/1) with many medium distinct brownish yellow (10YR6/8) mottles; medium heavy clay; apedal massive structure; slickenside cutans; strong consistence (dry).

Management considerations
This soil is a clayey depositional soil (note reduced clay content with depth) with a friable strongly structured surface and upper subsoil which grades into a poorly structured lower subsoil which is vertic (there are polished clay surfaces). Deep drainage is restricted as evidenced by pale colours and mottling as well as landscape position (alluvial flat). This site would be wet in winter but hold moisture for much of summer. Nutrient availability is moderate with slightly acidic subsoil but the surface soil is strongly acidic with reduced nutrient availability and increasing availability of Aluminium. Root penetration would be restricted by lack of gas (air) exchange but no chemical restrictions (neutral pH).
Analytical data
Site CLRA15
Sample
depth
pH
EC
NaCl
Ex Ca
Ex Mg
Ex K
Ex Na
Ex Al
Ex Acidity
FC
–10kPa
PWP
–1500kPa
KS
FS
Z
C
Horizon
cm
H2O
CaCl2
dS/m
%
cmolc/kg
cmolc/kg
cmolc/kg
cmolc/kg
mg/kg
cmolc/kg
%
%
%
%
%
%
A1
0–15
5.2
4.3
0.07
N/R
6.1
6.2
0.37
0.45
260
20
44.1
47.8
1.6
9
30
54
B21t
35–50
6
4.7
0.05
N/R
3.3
7.9
0.26
0.87
110
13
36.2
19.9
1.1
14.4
35.5
46
B22gt
65–80
6.1
4.8
0.07
N/R
2.4
7.7
0.27
1.3
90
N/R
35.1
18.0
1
18.4
37
43.5
B23gt
95+
6.5
5.2
0.11
N/R
2
7.7
0.21
1.9
N/R
4.9
N/R
N/R
N/R
N/R
N/R
N/R
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