Agency Code: 501 Project Code: JSI Site Code: 0134
Described by: Tim Overheu Date: 28/04/1993

Observation type: existing vertical exposure Category: full description
Lab Analyses: Detailed chemical and physical analyses.

Location: MGA94 Zone: 50  758362 mE  6283278 mN Map sheet:  Cocanarup 100K
Location notes: 
Site notes: 
Disturbance: Extensive clearing.

Landform
Landform pattern: plain
Relief/modal slope: gently undulating rises
Landform element: hillslope
Morphological type: simple slope
Pattern Relief:  plain

Surface and Hydrological Properties
Rock outcrop: 0 %  
Surface coarse fragments: no gravel sized; no stones and boulder sized
Physical properties: loose; ; deep soil

Vegetation
Notes: Mallett, mallee sp in creekline. Salinity in valley.

Land use
Site: Grazing (grazing of vegetation planted by man). Surrounds: Grazing (grazing of vegetation planted by man).

Visible erosion, assessed flooding and salinity
no flooding, no ponding, no salinity.

Current Classification
WA Soil Group: (1999) Grey deep sandy duplex
Australian Soil Classification: (2002) Eutrophic Mottled-Hypernatric Grey Sodosol
ASC confidence: high
Soil Series: ARENAR (provisional)
Map Unit: 243Jm_2

Other Classifications
Northcote PPF: Dy5.42

Soil Profile Description

Horizon | Depth (cm) | Description
Ap | 0-10 | Dark grey (10YR 4/1 moist), grey (10YR 5/1 dry) loamy sand; no mottles; loose dry consistence; sandy fabric; apedal, single grain structure; no segregations segregations; non-dispersing, non-slaking, water repellent, non-calcareous; no pan no roots; pH 7.1 (1:5 water); EC 11 mS/m.
A21 | 10-48 | Pale brown (10YR 6/3 moist), light grey (10YR 7/2 dry) sand; no mottles; loose moderately moist consistence; sandy fabric; apedal, single grain structure; no segregations segregations; non-dispersing, non-slaking, non water repellent, non-calcareous; no pan no roots; pH 7.1 (1:5 water); EC 2 mS/m.
B21 | 48-100 | Light grey (10YR 7/1 moist) sandy clay; common coarse distinct yellowish brown (10YR 5/6 moist)  redox mottles and few medium prominent yellowish red (5YR 4/6 moist)  redox mottles; firm moderately moist consistence; smooth-ped fabric; pedal, strong, 20-50 mm, columnar and  strong, 5-10 mm, subangular blocky structure; no segregations segregations; slow dispersion, rapid slaking, non water repellent, non-calcareous; no pan no roots; pH 5.8 (1:5 water); EC 67 mS/m.
B22 | 100-160 | Light grey (10YR 7/2 moist) light medium clay; common coarse distinct reddish brown (5YR 4/4 moist)  redox mottles; firm moderately moist consistence; sandy fabric; apedal, massive structure; no segregations segregations; angular medium gravel sized coarse fragments; non-dispersing, rapid slaking, non water repellent, non-calcareous; no pan common roots; pH 6 (1:5 water); EC 8 mS/m.

Lab Results (501 JSI 0134)

Basic Chemistry

Sample | Horizon | Match | Depth | pH_w | pH_CaCl2 | EC | OC_wb | N_kjel | P_kjel | PRI | Al_CaCl2
A | 1 | A | 0-10 | 5.9 | 4.8 | 10 | 1.35 | 0.105 | 86 | 0.8 | <1
B | 2 | A | 10-48 | 6 | 4.8 | 3 | 0.1 | 0.01 | 19 | 1.7 | <1
C | 3 | A | 48-100 | 5.5 | 4.7 | 31 | 0.32 | 0.02 | 30 | 190 | <1
D | 4 | A | 100-160 | 4.8 | 4.3 | 90 | 0.09 | 0.005 | 15 | 43 | 1

Exchangeable Cations

Sample | Horizon | Match | Depth | Exch_Ca | Exch_Na | Exch_K | Exch_Mg | Exch_Mn | Exch_Al | Sum_Exch | ESP | CaMgR_Exch | Base_stat
A | 1 | A | 0-10 | 2.55 (2) | 0.3 (2) | 0.23 (2) | 0.68 (2) | <0.02 (2) | 0.06 (2) | 3.76 (1) | 8 (3) | 3.75 (1) | 107.43 (2)
B | 2 | A | 10-48 | 0.13 (2) | 0.04 (2) | <0.02 (2) | 0.12 (2) | <0.02 (2) | 0.03 (2) | 0.3 (1) | 13 (3) | 1.08 (1) | 8.11 (2)
C | 3 | A | 48-100 | 0.19 (2) | 1.16 (2) | 0.16 (2) | 2.52 (2) | <0.02 (2) | 0.09 (2) | 4.03 (1) | 29 (3) | 0.08 (1) | 9.44 (2)
D | 4 | A | 100-160 | 0.04 (2) | 2.56 (2) | 0.18 (2) | 2.86 (2) | <0.02 (2) | 0.07 (2) | 5.64 (1) | 45 (3) | 0.01 (1) | 9.38 (2)

Particle Size Analysis

Sample | Horizon | Match | Depth | s1000_2000 | s600_1000u | s300_600u | s180_300u | s150_180u | s106_150u | s75_106u | s20_75u | silt | clay
A | 1 | A | 0-10 | 17.2 | 17.2 | 21.7 | 12 | 3.3 | 4.6 | 4.8 | 12.3 | 3.3 | 3.5
B | 2 | A | 10-48 | 21.6 | 18.3 | 17.8 | 11.2 | 3.7 | 5.3 | 5.8 | 10 | 2.5 | 3.7
C | 3 | A | 48-100 | 10.8 | 11.7 | 12.9 | 5.8 | 1.6 | 2.3 | 2.5 | 7.3 | 2.3 | 42.7
D | 4 | A | 100-160 | 6.9 | 5.9 | 6.4 | 3.6 | 1.2 | 1.6 | 1.7 | 6.2 | 6.4 | 60.1