Agency Code: 501 Project Code: REF Site Code: DP01
Described by: Geoff M Dimmock Date: 13/05/1976

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

Location: MGA94 Zone: 50  431639 mE  6384898 mN Elevation (m): 310  Map sheet:  Dwellingup 100K
Location notes: 21 km east of Dwellingup; Kennedy Block; Dwellingup Sheet (CALM) co-ordinates CR 75. 930 m WNW of Reference Tree CR 75 2. 200 m north of Wells Road.
Site notes: From CSIRO WA Labs P 0677.  Landform/topography: Mid gentle slope on broad ridge in lateritic upland.
Disturbance: Natural.

Landform
Landform pattern:	Slope:  7 %
Relief/modal slope:
Landform element: hillslope
Morphological type: mid-slope
Pattern Relief: 	Microrelief: 310 m

Surface and Hydrological Properties
Rock outcrop:   
Surface coarse fragments: few gravel sized ferruginous
Physical properties: rapid profile permeability

Geology/parent material
Soil parent material: dolerite
Sands and gravel derived from weathering of laterite on dolerite dyke.

Vegetation
Notes: Jarrah-marri regrowth following cutting before 1920; basal area 25.6 m square / ha.

Species List
Tree: Banksia grandis, Eucalyptus calophylla, Eucalyptus marginata, Persoonia longifolia
Medium Shrubs: Acacia pulchella, Acacia urophylla, Hibbertia lasiopus, Hibbertia montana, Leucopogon capitellatus, Leucopogon verticillatus, Phyllanthus calycinus, Pteridium esculentum, Xanthosia candida
Low Shrubs: Astroloma pallidum, Boronia spathulata, Kennedia coccinea, Opercularia hispidula, Pimelea suaveolens, Tetrarrhena laevis

Current Classification
WA Soil Group: (1999) Loamy gravel
Australian Soil Classification: (2002) Ferric Mesotrophic Brown Kandosol, A thickness medium, A gravels very gravelly, A texture loamy, B texture loamy, Soil Depth deep
ASC confidence: very high
Map Unit: 255DpDW

Other Classifications
World Ref Base: (1998)  Ferric  Ferralsol
FAO soil unit:  Xanthic Ferralsol
Great Soil Group:  Siliceous sand
Northcote PPF: Uc5.11

Soil Profile Description

Horizon | Depth (cm) | Description
A11 | 0-10 | Very dark greyish brown (10YR 3/2 moist) sandy loam; very weak dry consistence; pedal, weak, granular structure; 56% ferruginous gravel sized coarse fragments; clear boundary.
A12 | 10-20 | Brown (7.5YR 4/4 moist) sandy loam; loose moderately moist consistence; apedal, single grain structure; 59% ferruginous gravel coarse fragments to 3 cm diameter; clear boundary.
B11 | 20-30 | Reddish brown (5YR 4/4 moist) sandy loam; loose moderately moist consistence; apedal, single grain structure; 71% ferruginous gravel sized coarse fragments; notes: arbitrary to; diffuse boundary.
B22 | 30-60 | Reddish brown (5YR 4/4 moist) sandy loam; loose moderately moist consistence; apedal, single grain structure; 72% ferruginous gravel sized coarse fragments to 3 cm diameter; gradual boundary.
B2 | 60-90 | Reddish brown (5YR 4/4 moist) sandy clay loam; loose moderately moist consistence; apedal, single grain structure; 74% ferruginous gravel sized coarse fragments to 5 cm diameter.

Lab Results (501 REF DP01)

Basic Chemistry

Sample | Horizon | Match | Depth | pH_w | EC | Cl_sol | Ca_xrf | OC_wb | N_kjel | P_HCO3 | S_xrf | S_extract | K_xrf | Cu_xrf | Fe_xrf | Mg_xrf | Mn_xrf | TiO2_xrf | Zn_xrf | Zn_extract
A | 1 | A | 0-10 | 6.1 | 2 | 10 | 0.618 | 7.4 | 0.21 | 18 | 0.045 | 8 | 0.134 | 0 | 3.5 | 0.173 | 950 | 2.19 | 17 | 6.33
B | 2 | A | 10-20 | 6.2 | 2 | 10 | 0.125 | 2.6 | 0.08 | 7 | 0.023 | 7 | 0.129 | 0 | 3.96 | 0.068 | 550 | 2.39 | 13 | 5.07
C | 3 | A | 20-30 | 6.2 | 1 | 10 | 0.122 | 1.4 | 0.06 | 4 | 0.025 | 5 | 0.133 | 1 | 5.3 | 0.061 | 360 | 2.66 | 14 | 3.94
D | 4 | A | 30-60 | 6.3 | 2 | 10 | 0.126 | 1.2 | 0.05 | 4 | 0.027 | 11 | 0.152 | 0 | 5.81 | 0.069 | 290 | 2.97 | 13 | 1.38
E | 5 | A | 60-90 | 6.3 | 1 | 10 | 0.073 | 0.74 | 0.03 | 4 | 0.026 | 20 | 0.116 | 8 | 7.62 | 0.044 | 220 | 3.31 | 24 | 10.5

Exchangeable Cations

Sample | Horizon | Match | Depth | Exch_Ca | Exch_Na | Exch_K | Exch_Mg | Exch_ac | Sum_Exch | ESP | CaMgR_Exch | Base_stat
A | 1 | A | 0-10 | 9.4 | 0.1 | 0.4 | 4.2 | 2.1 | 14.1 (1) | 1 (3) | 2.24 (1) | 201.43 (2)
B | 2 | A | 10-20 | 2.2 | 0.1 | 0.3 | 1.1 | 1.4 | 3.7 (1) | 3 (3) | 2 (1) | 33.64 (2)
C | 3 | A | 20-30 | 2 | 0.1 | 0.2 | 0.9 | 1.1 | 3.2 (1) | 3 (3) | 2.22 (1) | 24.62 (2)
D | 4 | A | 30-60 | 2.1 | 0.1 | 0.3 | 1 | 1.1 | 3.5 (1) | 3 (3) | 2.1 (1) | 20.59 (2)
E | 5 | A | 60-90 | 1.2 | 0.1 | 0.1 | 0.7 | 1.1 | 2.1 (1) | 5 (3) | 1.71 (1) | 10.5 (2)

Particle Size Analysis

Sample | Horizon | Match | Depth | gt2mm | s200_2000u | sand | s20_200u | silt | clay
A | 1 | A | 0-10 | 56 | 43 | 82 (2) | 39 | 11 | 7
B | 2 | A | 10-20 | 59 | 42 | 80 (2) | 38 | 9 | 11
C | 3 | A | 20-30 | 71 | 45 | 78 (2) | 33 | 9 | 13
D | 4 | A | 30-60 | 72 | 36 | 73 (2) | 37 | 10 | 17
E | 5 | A | 60-90 | 74 | 36 | 70 (2) | 34 | 10 | 20