Agency Code: 501 Project Code: P Site Code: 0299
Described by: M J Mulcahy Date: 18/09/1956

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

Location: MGA94 Zone: 50  488103 mE  6481548 mN Elevation (m): 244  Map sheet:  Northam 100K
Location notes: L.D. 2/80 on the south side of block 3890:
Site notes: 
Disturbance: Limited clearing.

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

Geology/parent material
Soil parent material: quartzite

Species List
Tallest: Banksia sp., Xanthorrhoea preissii
Mid: Nuytsia floribunda

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

Current Classification
WA Soil Group: (1999) Yellow deep sand
Map Unit: 256MbES2

Other Classifications
Great Soil Group:  Yellow earth

Soil Profile Description

Horizon | Depth (cm) | Description
A1 | 0-10 | Greyish brown (2.5Y 5/2 moist) sand; loose consistence; clod structure; sharp boundary.
A | 10-13 | Sand; notes: discarded.
A3 | 13-71 | Brownish yellow (10YR 6/6 moist) sand; loose consistence; weak, clod structure.
AB | 71-86 | Sand; notes: discarded.
B11 | 86-165 | Brownish yellow (10YR 6/6 moist) sand; pink (5YR 8/4 moist)  mottles; few rounded ironstone fine gravel sized coarse fragments; sharp boundary.
B12 | 165-188 | Brownish yellow (10YR 6/6 moist) sand; many quartzite fine gravel sized coarse fragments.
B21 | 188-203 | Brownish yellow (10YR 6/6 moist) coarse sand; common ferruginous concretions; very abundant quartzite fine gravel sized coarse fragments.
B22 | 203-218 | Brownish yellow (10YR 6/6 moist) coarse sand; few ferruginous concretions; very abundant quartzite fine gravel sized coarse fragments.
B23 | 218-297 | Yellow (10YR 7/6 moist) coarse sand; many quartzite fine gravel sized coarse fragments; notes: YELLOWISH AND WHITISH QZ AND QUGRIT.

Lab Results (501 P 0299)

Basic Chemistry

Sample | Horizon | Match | Depth | pH_w | EC | Cl_sol | LOI | OC_wb | N_kjel | P_HCl
1 | 1 | A | 0-10 | 6.2 | 1.2 | 6 | 1.6 | 0.39 | 0.022 | 20
2 | 2 | A | 13-71 | 5.6 | 0.9 | 6 | 1.9 | | |
3 | 3 | A | 86-165 | 6.3 | 1.2 | 6 | 2.2 | | |
4 | 4 | A | 165-188 | 6.4 | 1.2 | 6 | 2.2 | | | 30
5 | 5 | A | 188-203 | 6.4 | 1.5 | 6 | 2 | | | 10
6 | 6 | A | 203-218 | 6.5 | 1.2 | 6 | 1.8 | | |
7 | 7 | A | 218-297 | 6.4 | 1.2 | 12 | 0.9 | | | 10

Exchangeable Cations

Sample | Horizon | Match | Depth | Exch_Ca | Exch_Na | Exch_K | Exch_Mg | Exch_ac | Exch_H | Sum_Exch | ESP | CaMgR_Exch | Base_stat
1 | 1 | A | 0-10 | 0.8 | 0.06 | 0.05 | 0.7 | 1.6 | 1.6 | 1.61 (1) | 4 (3) | 1.14 (1) | 40.25 (2)
4 | 4 | A | 165-188 | 0.6 | 0.04 | 0.04 | 0.5 | 0.8 | 0.8 | 1.18 (1) | 3 (3) | 1.2 (1) | 13.11 (2)

Particle Size Analysis

Sample | Horizon | Match | Depth | gt2mm | s200_2000u | s20_200u | silt | clay
1 | 1 | A | 0-10 | | 67 | 26 | 3 | 4
2 | 2 | A | 13-71 | <1 | 58 | 31 | 1 | 10
3 | 3 | A | 86-165 | 4 | 48 | 37 | 5 | 10
4 | 4 | A | 165-188 | 52 | 53 | 36 | 3 | 9
5 | 5 | A | 188-203 | 59 | 61 | 29 | 2 | 9
6 | 6 | A | 203-218 | 62 | 65 | 26 | 3 | 7
7 | 7 | A | 218-297 | 42 | 80 | 15 | 2 | 4