Agency Code: 501 Project Code: cor site Code: 1782 Described by: Bill Verboom Date



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Agency Code: 501 Project Code: COR Site Code: 1782

Described by: Bill Verboom Date: 26/11/1998
Observation type: soil pit Category: full description

Lab Analyses: Detailed chemical and physical analyses.
Location: MGA94 Zone: 50 575765 mE 6361555 mN Map sheet: Yealering 100K

Location notes:

Site notes: Gravel % by weight---dolerite dyke contact, "intruding" into old surface with no gravels forming---wet, ---minor coarse surface wash
Landform

Landform pattern: peneplain Slope: 3 %

Relief/modal slope:

Landform element: hillslope Slope length (m): 80

Morphological type: mid-slope Slope curvature: uniform slope

Pattern Relief: peneplain
Surface and Hydrological Properties

Rock outcrop:

Surface coarse fragments:

Physical properties: Hardsetting;
Geology/parent material

Soil parent material:

heavily weathered dolerite/contact zone


Vegetation

Notes: Mallee
Species List

Eucalyptus sp.


Land use

Site: Cropping (may include grazing in rotation). Surrounds: Cropping (may include grazing in rotation).
Current Classification

WA Soil Group: (1999) Alkaline grey shallow sandy duplex

Australian Soil Classification: (2002) Eutrophic Subnatric Brown Sodosol

ASC confidence: high

Map Unit: 259Do_1
Soil Profile Description


Horizon

Depth (cm)

Description

A1

0-12

Dark greyish brown (10YR 4/2 moist) loamy sand; firm dry consistence; apedal, massive structure; 10% angular siliceous quartz fine gravel sized coarse fragments and 1% subrounded ferruginous ironstone fine gravel sized coarse fragments; moderately rapid permeability, non-dispersing, non-slaking; pH 7.3 (1:5 water); EC 0 (mS/m (1:5)); clear, smooth boundary.

B21

12-35

Brown (7.5YR 5/4 moist) sandy clay loam; very strong moist consistence; apedal, massive structure; 8% angular siliceous quartz fine gravel sized coarse fragments and 10% clay fine gravel sized coarse fragments Indurated clay; moderately slow permeability, slow dispersion, rapid slaking; pH 6.7 (1:5 water); EC 0 (mS/m (1:5)); notes: Dispersed---charcoal (burnt roots) present; gradual, wavy boundary.

C

35-140+

White (2.5Y 8/1 moist) gravelly sandy clay loam; very strong moist consistence; apedal, massive structure; 25% clay fine gravel sized coarse fragments Indurated clay and 10% clay medium gravel sized coarse fragments Indurated clay and 19% clay coarse gravel sized coarse fragments Indurated clay; moderately slow permeability, slow dispersion, slow slaking; pH 8.3 (1:5 water); EC 15 (mS/m (1:5)); notes: Maintains some remnant rock structure---very mixed rock (dolerite/contact)---all kaolinized---metamorphosed.

Lab Results (501 COR 1782)
Basic Chemistry


Sample

Horizon

Match

Depth

pH_CaCl2

OC_wb

Fe_CIDI

1

1

A

0-12

4.6 (2)

2.38 (1)

0.57 (1)

2

2

A

12-35

6.7 (2)

1.69 (1)

0.57 (1)

3

3

A

35-140

7.7 (2)

1.15 (1)

0.57 (1)


Saturation Extract


Sample

Horizon

Match

Depth

pH_sat

EC_sat

Na_sat

Ca_sat

Mg_sat

K_sat

3

3

A

35-140

7.9

230

0.6

0.03

0.06

0.02


Exchangeable Cations


Sample

Horizon

Match

Depth

CEC

Exch_Ca

Exch_Na

Exch_K

Exch_Mg

Sum_Exch

ESP

CaMgR_Exch

Exch_cats%

Base_stat

1

1

A

0-12

8.5 (4)

1.9 (4)

0.19 (4)

0.19 (4)

1 (4)

3.28 (1)

2 (2)

1.9 (1)

39

164 (2)

2

2

A

12-35

11.8 (4)

4 (4)

0.89 (4)

0.15 (4)

4.8 (4)

9.84 (1)

8 (2)

0.83 (1)

83

31.74 (2)

3

3

A

35-140

12 (4)

4.8 (4)

1 (4)

0.52 (4)

5.7 (4)

12.02 (1)

8 (2)

0.84 (1)

100

36.42 (2)


Particle Size Analysis


Sample

Horizon

Match

Depth

s500_2000u

s200_500u

s20_200u

silt

clay

1

1

A

0-12

42

28

24

4

2

2

2

A

12-35

25

24

16

4

31

3

3

A

35-140

27

12

14

14

33


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