Agency Code: 501 Project Code: REF Site Code: MRA02
Described by: Unknown Date: //

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

Location: MGA94 Zone: 50  459589 mE  6683290 mN Elevation (m): 313  
Location notes: Buntine Reserve (Conservation and Land Management) 1.30 km along Buntine East Road from Wubin-Perenjori Road, and 50 m south.
Site notes: Landform/topography: On long gentle slope; lower position; Drainage: internal - restricted by clay substrate. NB. All sand grains rounded, spherical, frosted, well sorted (300 - 500 microns)

Landform
Landform pattern: alluvial plain	Slope:  3 %
Relief/modal slope:
Landform element:
Morphological type: flat
Pattern Relief:  alluvial plain

Surface and Hydrological Properties
Rock outcrop:   
Surface coarse fragments: 
Physical properties: Hardsetting; 

Geology/parent material
Soil parent material:
Mottled zone of laterite profile.

Species List
Tree: Acacia acuminata, Eremophila oppositifolia, Eucalyptus redunca, Melaleuca adnata
Medium Shrubs: Acacia acuminata
Ground: Borya nitida, Caladenia sp., Chamaescilla spiralis, Cheilanthes austrotenuifolia, Dianella revoluta, Stipa variabilis, Thelymitra canaliculata, Thysanotus patersonii, Waitzia acuminata

Current Classification
WA Soil Group: (1999) Red deep loamy duplex
Australian Soil Classification: (2002) Eutrophic Mottled-Mesonatric Red Sodosol, A thickness thick, A gravels non-gravelly, A texture clay loamy, B texture clayey, Soil Depth moderately deep
ASC confidence: very high
Map Unit: 258Bd_8

Other Classifications
World Ref Base: (1998)  Magnesic  Solonetz
FAO soil unit:  Chromic Cambisol
Northcote PPF: Dr3.41

Soil Profile Description

Horizon | Depth (cm) | Description
A11 | 0-6 | Reddish brown (5YR 4/4 moist) sandy loam; firm dry consistence; apedal, massive structure; notes: to loam; porous; clear boundary.
A12 | 6-15 | Yellowish red (5YR 4/5 moist) loam; firm dry consistence; apedal, massive structure; notes: porous; clear boundary.
A13 | 15-28 | Brown (7.5YR 5/4 moist) sandy clay loam; red (2.5YR 4/6 moist)  mottles; firm dry consistence; apedal, massive structure; notes: porous; sharp boundary.
A2 | 28-42 | Pinkish grey (5YR 7/2 moist) sandy loam; strong dry consistence; apedal, massive structure; 10% gravel sized coarse fragments; notes: very porous; sharp boundary.
B11 | 42-55 | Reddish brown (5YR 4/4 moist) medium clay; red (2.5YR 4/6 moist)  mottles; strong dry consistence; pedal, columnar structure; 8% gravel sized coarse fragments; notes: almost white coating to domes; gradual boundary.
B12 | 55-70 | Yellowish red (5YR 4/6 moist) medium clay; red (2.5YR 4/6 moist)  mottles; strong dry consistence; pedal, 100-200 mm, columnar structure; 5% gravel sized coarse fragments.
| | Notes: NB. In creek nearby bank shows incipient doming and prismatic structure, lime nodules at about 100 cm, and resting sharply on red-brown hardpan at about 120 cm.

Lab Results (501 REF MRA02)

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 | 5.7 | 4.7 | 3 | 0.65 | 0.04 | 51 | 2 | 160
B | 2 | A | 6-15 | 5.3 | 4.4 | 2 | 0.69 | 0.04 | 52 | 2 | 94
C | 3 | A | 15-28 | 5.5 | 4.4 | 1 | 0.59 | 0.03 | 41 | <2 | 74
D | 4 | A | 28-42 | 6.1 | 4.7 | 6 | 0.41 | 0.02 | 33 | 2 | 27
E | 5 | A | 42-55 | 5.8 | 4.6 | 14 | 0.37 | 0.03 | 33 | 2 | 38
F | 6 | A | 55-70 | 5.7 | 4.7 | 22 | 0.32 | 0.03 | 32 | <2 | 78

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 | 1.5 | 0.1 | 0.4 | 0.7 | 2.7 (1) | 4 (3) | 2.14 (1) | 68 (2) | 16.88 (2)
B | 2 | A | 6-15 | 5 | 1.6 | <0.1 | 0.3 | 0.7 | 2.65 (1) | 2 (3) | 2.29 (1) | 53 (2) | 13.25 (2)
C | 3 | A | 15-28 | 5 | 1.8 | 0.1 | 0.2 | 1 | 3.1 (1) | 3 (3) | 1.8 (1) | 62 (2) | 15.5 (2)
D | 4 | A | 28-42 | 3 | 1 | 0.7 | <0.1 | 0.9 | 2.65 (1) | 26 (3) | 1.11 (1) | 88 (2) | 22.08 (2)
E | 5 | A | 42-55 | 8 | 2 | 2 | 0.2 | 2.4 | 6.6 (1) | 30 (3) | 0.83 (1) | 83 (2) | 24.44 (2)
F | 6 | A | 55-70 | 14 | 3.2 | 3.3 | 0.3 | 4.3 | 11.1 (1) | 30 (3) | 0.74 (1) | 79 (2) | 25.23 (2)

Particle Size Analysis

Sample | Horizon | Match | Depth | s200_2000u | sand | s20_200u | silt | clay
A | 1 | A | 0-6 | 48 | 76 (2) | 28 | 8 | 16
B | 2 | A | 6-15 | 46 | 74 (2) | 28 | 6 | 20
C | 3 | A | 15-28 | 43 | 73 (2) | 30 | 7 | 20
D | 4 | A | 28-42 | 48 | 81 (2) | 33 | 7 | 12
E | 5 | A | 42-55 | 40 | 68 (2) | 28 | 5 | 27
F | 6 | A | 55-70 | 28 | 49 (2) | 21 | 7 | 44