Agency Code: 501 Project Code: KLC Site Code: 0375
Described by: Heather Percy Date: 04/08/1992

Observation type: auger boring Category: full description
Lab Analyses: Special purpose analyses only.

Location: MGA94 Zone: 50  522470 mE  6247407 mN Elevation (m): 373  Map sheet:  Kojonup 100K
Location notes:  road reserve off Cook Road
Site notes: 
Disturbance: Complete clearing; never cultivated.

Landform
Landform pattern: low hills	Slope:  3 %
Relief/modal slope: undulating low hills
Landform element: hillslope
Morphological type: mid-slope	Slope curvature: concave slope
Pattern Relief:  low hills	Microrelief: 50 m

Surface and Hydrological Properties
Rock outcrop: 2 %  granite 
Surface coarse fragments: no gravel sized; very few subangular stones and boulder sized granite
Physical properties: soft; ; moderate profile permeability; deep soil

Geology: granite

Vegetation
Type:  grassland; Surrounded by:  grassland
Notes: Wandoo, rock sheoak on reserve and wandoo on outcrops

Land use
Site: Grazing (grazing of vegetation planted by man). Surrounds: Cropping (may include grazing in rotation).

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

Current Classification
WA Soil Group: (1999) Yellow/brown deep sandy duplex
Australian Soil Classification: (2002) Eutrophic Mottled-Mesonatric Red Sodosol
ASC confidence: high
Soil Series: Lowdon 1
Map Unit: 257Fa_3

Other Classifications
Northcote PPF: Dy5.42

Soil Profile Description

Horizon | Depth (cm) | Description
A1 | 0-7 | Dark brown (7.5YR 3/2 moist) loamy medium sand; no mottles; loose moist consistence; apedal, single grain structure; no segregations segregations; 10% subangular granite medium gravel sized coarse fragments; rapid permeability; common fine roots; pH 6 (Raupach and Tucker); abrupt boundary.
A21e | 7-15 | Brown (10YR 5/3 moist), very pale brown (10YR 7/3 dry) stony clayey medium sand; no mottles; loose moist consistence; apedal, single grain structure; no segregations segregations; 20% subrounded granite fine gravel sized coarse fragments and  15% subangular granite coarse gravel sized coarse fragments; rapid permeability; common fine roots; pH 6 (Raupach and Tucker); clear boundary.
A22e | 15-30 | Light yellowish brown (10YR 6/4 moist), very pale brown (10YR 7/3 dry) sandy stone texture; no mottles; loose moderately moist consistence; apedal, single grain structure; no segregations segregations; 40% subangular granite coarse gravel sized coarse fragments and  10% subangular granite cobble sized coarse fragments and  10% subrounded granite fine gravel sized coarse fragments; rapid permeability; many fine roots; pH 6 (Raupach and Tucker); abrupt boundary.
B1 | 30-40 | Yellowish red (5YR 5/6 moist) coarse sandy clay loam; many medium faint reddish yellow (5YR 6/6 moist)  redox mottles; weak moderately moist consistence; rough-ped fabric; pedal, weak structure; no segregations segregations; 20% subangular granite medium gravel sized coarse fragments; moderately rapid permeability, slow dispersion, slow slaking; common fine roots; pH 6 (Raupach and Tucker); clear boundary.
B21t | 40-60 | Reddish yellow (5YR 6/8 moist) light clay; common fine faint reddish yellow (7.5YR 6/8 moist)  redox mottles; firm moderately moist consistence; rough-ped fabric; pedal, moderate structure; no segregations segregations; 10% subangular granite medium gravel sized coarse fragments; moderate permeability, slow dispersion, rapid slaking; common fine roots; pH 6 (Raupach and Tucker); notes: ESP; gradual boundary.
B22 | 60-70 | Yellow (10YR 7/8 moist) light clay; many medium distinct red (10R 4/6 moist)  redox mottles; firm moderately moist consistence; rough-ped fabric; pedal, moderate structure; no segregations segregations; no coarse fragments; moderate permeability, non-dispersing, rapid slaking; few very fine roots; pH 6.5 (Raupach and Tucker); abrupt boundary.
B3 | 70-80 | White (2.5Y 8/2 moist) medium sandy clay loam; many fine distinct olive yellow (2.5Y 6/6 moist)  redox mottles and many fine distinct olive brown (2.5Y 4/6 moist)  redox mottles; apedal, massive structure; no segregations segregations; no coarse fragments; moderate permeability; no roots; pH 6.5 (Raupach and Tucker); abrupt boundary.
C | 80-100+ | Light grey (5Y 7/2 moist) gritty medium sandy light clay; many medium prominent dusky red (10R 3/2 moist)  redox mottles and common fine distinct yellow (10YR 7/6 moist)  redox mottles; apedal, massive structure; no segregations segregations; no coarse fragments; moderate permeability; no roots; pH 6.5 (Raupach and Tucker); notes: Weathered granite.

Lab Results (501 KLC 0375)

Basic Chemistry

Sample | Horizon | Match | Depth | pH_w | pH_CaCl2 | EC
E | 5 | A | 40-60 | 6.3 | 5.4 | 3
S | 1 | C | 0-11 | | 5.05 |
T | 3 | B | 16-26 | | 4.9 |
U | 5 | B | 41-51 | | 5.37 |

Exchangeable Cations

Sample | Horizon | Match | Depth | Exch_Ca | Exch_Na | Exch_K | Exch_Mg | Exch_Mn | Exch_Al | Sum_Exch | ESP | CaMgR_Exch
E | 5 | A | 40-60 | 2.42 (2) | 0.21 (2) | 0.26 (2) | 2.72 (2) | <0.02 (2) | <0.02 (2) | 5.61 (1) | 4 (3) | 0.89 (1)

Particle Size Analysis

Sample | Horizon | Match | Depth | gt2mm
E | 5 | A | 40-60 | 6.42