Agency Code: 501 Project Code: REF Site Code: LG01
Described by: Unknown Date: //

Observation type: Unknown Category: 
Lab Analyses: Detailed chemical and physical analyses.

Location: MGA94 Zone: 50  659241 mE  6335948 mN 
Location notes: Heathlands Nature Reserve (Conservation and Land Management). 22 km east of Lake Grace on the Newdegate Road (Route 107). 15 m south of CALM grid peg 297/540 (Pegs are placed at 20 m intervals along the northern boundary of Reserve).
Site notes: Landform/topography: Broad flat valley floor; Drainage: internal - slowly permeable due to clay substrate; external - poorly drained due to low gradient.

Surface and Hydrological Properties
Rock outcrop:   
Surface coarse fragments: 
Physical properties: cryptogam surface; ; slow profile permeability

Geology/parent material
Soil parent material:
Alluvium derived from weathering of granitic rocks and laterite.

Vegetation
Notes: Mallee heath.

Species List
Tall Shrubs: Eucalyptus cylindriflora
Medium Shrubs: Exocarpos aphyllus, Melaleuca adnata, Melaleuca cardiophylla, Melaleuca concinna, Melaleuca lateriflora, Melaleuca uncinata
Low Shrubs: Melaleuca pentagona, Olearia muelleri, Phebalium sp. novae

Current Classification
WA Soil Group: (1999) Alkaline grey shallow loamy duplex
Australian Soil Classification: (2002) Hypocalcic Petrocalcic Brown Sodosol, A thickness thin, A gravels non-gravelly, A texture loamy, B texture clay loamy, Soil Depth moderately deep
ASC confidence: very high
Map Unit: 250Nw_2

Other Classifications
World Ref Base: (1998)  Haplic  Solonetz
FAO soil unit:  Orthic Solonchak
Great Soil Group:  Solonetz
Northcote PPF: Dy2.43

Soil Profile Description

Horizon | Depth (cm) | Description
A1 | 0-6 | Brown (7.5YR 5/2 moist) sandy loam; firm dry consistence; earthy fabric; pedal, moderate structure; 1% ferruginous gravel sized coarse fragments; notes: l depth 4 - 8; very porous; thin algal crust; thin (2 mm) bleach at base; sharp boundary.
B1 | 6-14 | Brown (7.5YR 5/2 moist) gritty sandy clay; strong dry consistence; pedal, 10-20 mm, columnar structure; notes: u depth 4 - 8; very porous; thin coating of bleached grains on surface; clear boundary.
B2 | 14-30 | Brown (7.5YR 5/2 moist); strong dry consistence; pedal, moderate, 100-200 mm, polyhedral structure; 1% quartz fine gravel sized coarse fragments.
| 30-50 | Pale brown (10YR 6/3 moist) medium clay; very firm dry consistence; pedal, strong, 5-10 mm, polyhedral structure; common cutans; very few calcareous soft segregations; clear boundary.
| 50-80 | Pale brown (10YR 6/3 moist) medium clay; few brown (10YR 4/3 moist)  mottles; very firm dry consistence; pedal, strong, 50-100 mm, polyhedral structure; many cutans; 4% calcareous soft segregations; 5% calcareous coarse fragments; sharp boundary.
| 80 | Massive, calcrete pan.

Lab Results (501 REF LG01)

Basic Chemistry

Sample | Horizon | Match | Depth | pH_w | pH_CaCl2 | EC | OC_wb | N_kjel | P_kjel | P_HCO3 | K_HCO3
A | 1 | A | 0-6 | 7.7 | 7.2 | 13 | 0.78 | 0.04 | 30 | <2 | 62
B | 2 | A | 6-14 | 6.8 | 6 | 47 | 0.86 | 0.03 | 24 | <2 | 35
C | 3 | A | 14-30 | 8.4 | 7.5 | 85 | 0.57 | 0.03 | 26 | <2 | 99
D | 4 | A | 30-50 | 9 | 8.2 | 130 | | | | <2 | 180
E | 5 | A | 50-80 | 9.5 | 8.6 | 160 | | | | <2 | 220

Exchangeable Cations

Sample | Horizon | Match | Depth | CEC | Exch_Ca | Exch_Na | Exch_K | Exch_Mg | Sum_Exch | ESP | CaMgR_Exch | Exch_cats% | Base_stat
A | 1 | A | 0-6 | 4 | 1.8 | 0.4 | 0.1 | 1.7 | 4 (1) | 10 (3) | 1.06 (1) | 100 (2) | 44.44 (2)
C | 3 | A | 14-30 | 12 | 1.3 | 5.5 | 0.3 | 6.4 | 13.5 (1) | 41 (3) | 0.2 (1) | 113 (2) | 40.91 (2)
E | 5 | A | 50-80 | 20 | 2.3 | 8.9 | 0.6 | 8 | 19.8 (1) | 45 (3) | 0.29 (1) | 99 (2) | 39.6 (2)

Particle Size Analysis

Sample | Horizon | Match | Depth | s200_2000u | sand | s20_200u | silt | clay
A | 1 | A | 0-6 | 56 | 84 (2) | 28 | 7 | 9
C | 3 | A | 14-30 | 40 | 60 (2) | 20 | 7 | 33
E | 5 | A | 50-80 | 26 | 42 (2) | 16 | 8 | 50