Author: David Jacquier
Company: CSIRO Land and Water

Agency Code: 501 Project Code: KLC Site Code: 2003
Described by: John-Paul Van Moort Date: 15/03/1994

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

Location: MGA94 Zone: 50  473540 mE  6295398 mN Elevation (m): 260  Map sheet:  Darkan 100K
Location notes: Soil pit  Date Creek catchment - sandy duplex.  Pit located on Rutherford's property "Goldmead" near Capercup.
Site notes: Loose sandy surface over a hard layer.  Granite outcrop (possible adjacent to a dolerite dyke) 25m upslope of pit.
Disturbance: Complete clearing; past cultivation.

Landform
Landform pattern: rises
Relief/modal slope: gently undulating rises
Landform element: hillslope
Morphological type: mid-slope
Pattern Relief:  rises	Microrelief: 10 m

Surface and Hydrological Properties
Rock outcrop: 0 %  
Surface coarse fragments: no gravel sized; no stones and boulder sized
Physical properties: loose; ; deep soil

Geology/parent material
Soil parent material: granite
Weathered granite regional geology mapped as granite (Age).
Geology: granite

Vegetation
Type:  grassland; Surrounded by:  grassland
Notes: Wandoo

Land use
Site: Cropping (may include grazing in rotation). Surrounds: Cropping (may include grazing in rotation).

Current Classification
WA Soil Group: (1999) Yellow/brown deep sandy duplex
Soil Series: Lowdon 2
Map Unit: 253Dk_3

Soil Profile Description

Horizon | Depth (cm) | Description
A1 | 0-10 | Dark brown (10YR 3/3 moist) loamy medium sand; no mottles; loose dry consistence; apedal, single grain structure; 20% subangular smooth-faced ferric gravel fine gravel sized coarse fragments; water repellent; pH 5.5 (Raupach and Tucker); clear boundary.
A | 10-55 | Brownish yellow (10YR 6/6 moist) clayey medium sand; no mottles; loose dry consistence; apedal, single grain structure; 30% subangular quartz medium gravel sized coarse fragments and  30% subrounded smooth-faced ferric gravel medium gravel sized coarse fragments; pH 6 (Raupach and Tucker); notes: Becomes apedal, massive with depth; abrupt boundary.
B | 55-125 | Strong brown (7.5YR 4/6 moist) heavy clay; few light grey (7.5YR 7/0 moist)  redox mottles and common red (2.5YR 5/8 moist)  mottles; smooth-ped fabric; pedal, strong, polyhedral structure; no coarse fragments; pH 6 (Raupach and Tucker); diffuse boundary.
B | 125-160 | Weak red (10R 4/4 moist) heavy clay; many strong brown (7.5YR 3/6 moist)  redox mottles and few light grey (7.5YR 7/0 moist)  mottles; smooth-ped fabric; pedal, strong, polyhedral structure; no coarse fragments; pH 5.5 (Raupach and Tucker); diffuse boundary.
B | 160-200 | Weak red (10R 4/4 moist) heavy clay; many grey (5Y 6/1 moist)  redox mottles and few strong brown (7.5YR 5/6 moist)  mottles; smooth-ped fabric; pedal, strong, polyhedral structure; slickensides; no coarse fragments; pH 5.5 (Raupach and Tucker); diffuse boundary.
C | 200+ | Notes: Weathered granite.

Lab Results (501 KLC 2003)

Basic Chemistry

Sample | Horizon | Match | Depth | pH_w | pH_CaCl2 | EC | OC_wb | N_kjel | P_kjel | PRI | Al_CaCl2
1 | 1 | A | 0-10 | 5.3 | 4.7 | 7 | 1.8 | 0.136 | 220 | 6.6 | 2
2 | 2 | B | 20-50 | 5.7 | 4.9 | 1 | 0.15 | 0.015 | 57 | 4.8 | <1
3 | 3 | B | 60-120 | 6.3 | 5.5 | 4 | 0.13 | 0.017 | 34 | >1000 |
4 | 4 | B | 130-155 | 5.6 | 4.5 | 6 | 0.12 | 0.013 | 20 | >1000 | 2
5 | 5 | A | 160-200 | 5.1 | 4 | 7 | 0.2 | 0.014 | 19 | 480 | 12

Exchangeable Cations

Sample | Horizon | Match | Depth | Exch_Ca | Exch_Na | Exch_K | Exch_Mg | Exch_Mn | Exch_Al | Sum_Exch | ESP | CaMgR_Exch | Base_stat
1 | 1 | A | 0-10 | 2.43 (2) | 0.11 (2) | 0.08 (2) | 0.37 (2) | 0.1 (2) | 3.39 (2) | 2.99 (1) | 4 (3) | 6.57 (1) | 54.36 (2)
2 | 2 | B | 20-50 | 0.74 (2) | 0.03 (2) | 0.02 (2) | 0.21 (2) | <0.02 (2) | 0.03 (2) | 1 (1) | 3 (3) | 3.52 (1) | 16.39 (2)
3 | 3 | B | 60-120 | 2.45 (2) | 0.82 (2) | 0.06 (2) | 8.59 (2) | <0.02 (2) | <0.02 (2) | 11.92 (1) | 7 (3) | 0.29 (1) | 16.37 (2)
4 | 4 | B | 130-155 | 1.2 (2) | 1.04 (2) | 0.05 (2) | 6.84 (2) | <0.02 (2) | 0.22 (2) | 9.13 (1) | 11 (3) | 0.18 (1) | 14.42 (2)
5 | 5 | A | 160-200 | 0.74 (2) | 1.46 (2) | 0.05 (2) | 6.95 (2) | <0.02 (2) | 1 (2) | 9.2 (1) | 16 (3) | 0.11 (1) | 14.22 (2)

Particle Size Analysis

Sample | Horizon | Match | Depth | s1000_2000 | s600_1000u | s300_600u | s180_300u | s150_180u | s106_150u | s75_106u | sand | s20_75u | silt | clay
1 | 1 | A | 0-10 | 13.5 | 10.3 | 18.9 | 14.7 | 5.7 | 8 | 6.3 | | 11.6 | 5.5 | 5.5
2 | 2 | B | 20-50 | 17.7 | 11.5 | 16.6 | 14.2 | 5.5 | 7.8 | 6.6 | | 9.6 | 4.4 | 6.1
3 | 3 | B | 60-120 | 2.8 | 2.9 | 4.9 | 3.3 | 1.1 | 1.6 | 1.5 | 19.8 (2) | 1.7 | 7.4 | 72.8
4 | 4 | B | 130-155 | 3.2 | 3.7 | 7.7 | 5.3 | 1.8 | 2.7 | 2.5 | 31 (2) | 4.1 | 5.7 | 63.3
5 | 5 | A | 160-200 | 2 | 3.3 | 6.5 | 4.5 | 1.6 | 2.4 | 2.3 | | 5.1 | 7.6 | 64.7