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LP82

WLRA - soil pit LP82- landscape
Lower slope of rolling hills in the Pyrenees
    Site Code
LP82
WLRA - soil pit LP82- profile
Bleached-Sodic, Magnesic, Brown Chromosol

    Location

Middle Creek, Warrenmang, western Victoria.

    Landform

Hill

    Geology

Palaeozoic (Cambrian) Warrak Formation: marine sandstone, siltstone, schist

    Element

Hillslope
Horizon
Depth (cm)
Description

A1

0–7

Very dark greyish brown (10YR3/2) fine sandy loam; weakly structured; very weak consistence (dry); contains a few (4%) sandstone gravels (5 mm diameter); pH 6.2; clear boundary to:

A2

7–20

Conspicuously bleached (10YR7/2d) fine sandy clay loam (silty); weakly structured; weak consistence (moist); contains many (40%) sandstone fragments (8 mm diameter) as well as quartz (15 mm diameter); pH 6.3; abrupt boundary to:

B1

20–23

Light yellowish brown (10YR6/4) light medium clay; weakly structured; firm consistence (moist); contains a few (1%) sandstone fragments (<5 mm diameter); pH 6.5; abrupt boundary to:

B21

23–50

Yellowish brown (10YR5/8) medium heavy clay; strong medium polyhedral structure; firm consistence (moist); contains a few (1%) sandstone gravels (<5 mm diameter); pH 6.4; sharp boundary to:

B22

50–85

Yellowish brown (10YR5/8) medium clay; strong medium polyhedral structure; very firm consistence (dry); contains many (20–50%) sandstone gravels (10–15 cm diameter); pH 6.6; clear boundary to:

B3

85+

Weathered sandstone/ soft mudstone/ siltstone with clay bands; clay has a strong coarse prismatic structure; contains manganese flecks; pH 7.2.
Management considerations
  • Strong texture contrast between surface (A) horizons and the upper subsoil (B21) horizon
  • Very gravelly and bleached subsurface (A2) horizon
  • Weathered rock starting at 85 cm
Site
LP82
Sample depth cm
pH
EC
dS/m
NaCl
%
Ex Ca
cmol-/kg
Ex Mg
cmol-/kg
Ex K
cmol-/kg
Ex Na
cmol-/kg
Ex Al
mg/kg
Ex acidity
cmol-/kg
FC
-30okPa
PWP
-1500okPa
KS
%
FS
%
Z
%
C
%
Horizon
H2O
CaCl2
A1
0–7
6.2
5.1
<0.05
NA
3.4
0.9
0.3
<0.1
NA
28.1
7.3
NA
9
49
27
14
A2
7–20
6.3
5.1
<0.05
NA
1.9
0.8
0.3
<0.1
NA
NA
NA
NA
19
37
27
14
B1
20–23
6.5
5.2
<0.05
NA
1.3
1.5
0.3
0.1
NA
NA
NA
NA
NA
NA
NA
NA
B21
23–50
6.4
5.3
<0.05
NA
1.3
4.7
0.4
0.3
NA
33.9
16.7
NA
NA
NA
NA
NA
B22
50–85
6.6
5.4
<0.05
NA
0.7
4.8
0.2
0.4
NA
32.4
14.8
NA
NA
NA
NA
NA
B3
85+
7.2
7.9
0.16
NA
0.7
18.0
0.3
2.3
NA
NA
NA
NA
NA
NA
NA
NA
Note: NA=not assessed
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