Agency Code: 501 Project Code: COR Site Code: 1660
Described by: Paul Galloway Date: 21/10/1997

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

Location: MGA94 Zone: 50  536683 mE  6486701 mN Map sheet:  Cunderdin 100K
Location notes: 
Site notes: Gravel % by weight---In shallow rejuvinated drainage bowl close to breakaway--weathered granite cores at base of hole

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

Current Classification
WA Soil Group: (1999) Brown deep loamy duplex, ?yellow deep loamy duplex---acidic surface
Australian Soil Classification: (2002) Sodosol
Map Unit: 256Mb_3u

Soil Profile Description

Horizon	Depth (cm)	Description	
A1	0-14	Brown (7.5YR 4/3 moist) sandy loam; very weak dry consistence; apedal, massive structure; 1% angular siliceous quartz fine gravel sized coarse fragments and  1% subrounded ferruginous ironstone fine gravel sized coarse fragments indurated; moderately rapid permeability, non-dispersing, non-slaking, non-calcareous; pH 5.4 (1:5 water); EC 5 (mS/m (1:5)); gradual, smooth boundary.	
B11	14-69	Light brown (7.5YR 6/4 moist) sandy loam; strong dry consistence; pedal, weak, 10-20 mm, angular blocky structure; 3% angular siliceous quartz fine gravel sized coarse fragments and  5% subrounded ferruginous ironstone fine gravel sized coarse fragments indurated and  10% subrounded ferruginous ironstone medium gravel sized coarse fragments indurated; moderately slow permeability, slow dispersion, rapid slaking, non-calcareous; pH 8.4 (1:5 water); EC 8 (mS/m (1:5)); gradual, smooth boundary.	
B21c	69-100	Reddish yellow (7.5YR 6/6 moist) gravelly sandy clay; strong dry consistence; pedal, moderate, 10-20 mm, angular blocky structure; 5% subrounded ferruginous ironstone fine gravel sized coarse fragments indurated and  10% subrounded ferruginous ironstone medium gravel sized coarse fragments indurated and  5% subrounded ferruginous ironstone coarse gravel sized coarse fragments indurated; moderately slow permeability, slow dispersion, slow slaking; pH 8.9 (1:5 water); EC 20 (mS/m (1:5)); gradual, smooth boundary.	
Cr	100-150+	Very pale brown (10YR 7/4 moist) coarse sandy loam; many coarse distinct red (2.5YR 5/8 moist)  redox mottles; very firm dry consistence; apedal, massive structure; 10% subrounded ferruginous ironstone fine gravel sized coarse fragments indurated and  5% subrounded ferruginous ironstone medium gravel sized coarse fragments indurated and  2% subrounded ferruginous ironstone coarse gravel sized coarse fragments indurated; moderately rapid permeability, slow dispersion, slow slaking; pH 9.3 (1:5 water); EC 26 (mS/m (1:5)); notes: cores of weathering granite to 30 mm--pink clay has illuviated into this layer--2 mm cracks from top of 2nd horizon to base of pit(some active clays).	

Lab Results (501 COR 1660)

Basic Chemistry

Sample	Horizon	Match	Depth	pH_CaCl2	CaCO3_tot	OC_wb	Fe_CIDI	
1	1	A	0-14	7.9 (2)	0	2.45 (1)	0.64 (1)	
2	2	A	14-69	8 (2)	0	0.55 (1)	0.67 (1)	
3	3	A	69-100	5 (2)		0.39 (1)	1.18 (1)	
4	4	A	100-150	5.8 (2)		0.29 (1)	0.53 (1)	

Exchangeable Cations

Sample	Horizon	Match	Depth	CEC	Exch_Ca	Exch_Na	Exch_K	Exch_Mg	Sum_Exch	ESP	CaMgR_Exch	Exch_cats%	Base_stat	
1	1	A	0-14	10 (4)	3.6 (4)	0.12 (4)	0.12 (4)	1.7 (4)	5.54 (1)	1 (2)	2.12 (1)	55	92.33 (2)	
2	2	A	14-69	8 (4)	4.1 (4)	0.5 (4)	0.23 (4)	4.2 (4)	9.03 (1)	6 (2)	0.98 (1)	100	26.56 (2)	
3	3	A	69-100	11.1 (4)	4 (4)	2.04 (4)	0.79 (4)	6.7 (4)	13.53 (1)	18 (2)	0.6 (1)	100	28.79 (2)	
4	4	A	100-150	4.5 (4)	3.2 (4)	1.26 (4)	0.16 (4)	3 (4)	7.62 (1)	28 (2)	1.07 (1)	100	23.09 (2)	

Particle Size Analysis

Sample	Horizon	Match	Depth	gt2mm	s500_2000u	s200_500u	s20_200u	silt	clay	
1	1	A	0-14	1	28	30	30	6	6	
2	2	A	14-69	18	26	17	18	5	34	
3	3	A	69-100	20	15	14	17	7	47	
4	4	A	100-150	17	28	16	18	5	33