Agency Code: 501 Project Code: SYP Site Code: I371
Described by: Mark Newell Date: 21/06/1993

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

Location: MGA94 Zone: 50  523186 mE  6855007 mN Map sheet:  Kirkalocka 250K
Location notes: 
Site notes: 

Surface and Hydrological Properties
Rock outcrop:   
Surface coarse fragments: 
Physical properties: Hardsetting; cryptogam surface
Surface Crusting: 80%, Algae ( abundant)

Geology/parent material
Soil parent material: calcarenite

Vegetation
Veg unit: MESS - Melaleuca swamp shrubland

Species List
Tall Shrubs: Melaleuca leiocarpa
Medium Shrubs: Muehlenbeckia cunninghamii
Low Shrubs: Atriplex amnicola
Undescribed: Atriplex amnicola, Frankenia sp., Halosarcia sp., Melaleuca leiocarpa, Muehlenbeckia cunninghamii, Stipa elegantissima

Current Classification
WA Soil Group: (1999) Yellow/brown shallow loamy duplex
Australian Soil Classification: (2002) Eutrophic Petrocalcic Red Sodosol, A gravels non-gravelly, A texture silty, B texture clayey, Soil Depth shallow
ASC confidence: moderate
Map Unit: 273Mi

Other Classifications
Northcote PPF: Db 2.13

Soil Profile Description

Horizon	Depth (cm)	Description	
A	0-10	Pale brown (10YR 6/3 moist) silty clay loam; very weak consistence, non-sticky, slightly plastic; rough-ped fabric; pedal, strong, 2-5 mm, crumb structure; few medium calcareous soft segregations; non-dispersing, non-slaking, highly calcareous; pH 10 (Raupach and Tucker); EC 15 mS/m; clear, wavy boundary.	
B21	10-25	Reddish brown (5YR 5/4 moist) silty medium clay; firm consistence, slightly sticky, very plastic; rough-ped fabric; pedal, strong, 2-5 mm, polyhedral structure; few medium calcareous soft segregations; slow dispersion, rapid slaking, highly calcareous; pH 10 (Raupach and Tucker); EC 70 mS/m; clear, wavy boundary.	
B22	25-40	Light reddish brown (5YR 6/4 moist) silty medium clay; firm consistence, slightly sticky, very plastic; rough-ped fabric; pedal, moderate, 2-5 mm, angular blocky structure; few medium calcareous soft segregations; common subrounded calcareous calcrete all sized coarse fragments; non-dispersing, non-slaking, highly calcareous; pH 10 (Raupach and Tucker); EC 100 mS/m.	
	40+	Notes: Calcrete.	

Lab Results (501 SYP I371)

Basic Chemistry

Sample	Horizon	Match	Depth	pH_w	EC	OC_wb	N_kjel	P_kjel	
A	1	A	0-10	9.2	47	0.36	0.043	170	
B	2	A	10-25	9.5	130	0.3	0.031	160	
C	3	A	25-40	9.8	93	0.15	0.024	140	

Exchangeable Cations

Sample	Horizon	Match	Depth	CEC	Exch_Ca	Exch_Na	Exch_K	Exch_Mg	Sum_Exch	ESP	CaMgR_Exch	Exch_cats%	Base_stat	
A	1	A	0-10	13	6.17 (3)	1.79 (3)	1.49 (3)	4.22 (3)	13.67 (1)	14 (2)	1.46 (1)	105 (2)	42.72 (2)	
B	2	A	10-25	16	3.39 (3)	6.13 (3)	1.86 (3)	5.49 (3)	16.87 (1)	38 (2)	0.62 (1)	105 (2)	42.18 (2)	
C	3	A	25-40	19	3.97 (3)	7.85 (3)	2.78 (3)	5.14 (3)	19.74 (1)	41 (2)	0.77 (1)	104 (2)	263.2 (2)	

Particle Size Analysis

Sample	Horizon	Match	Depth	sand	silt	clay	
A	1	A	0-10	44	24	32	
B	2	A	10-25	41.5	18.5	40	
C	3	A	25-40	88	4.5	7.5