CSLP4

Location: Simpson

Australian Soil Classification: Parapanic, Humosesquic, Semiaquic, PODOSOL

General Landscape Description: Dissected Plateau.
Site Description: Side slope.
Geology: Neogene sediments – Hanson Plains Sand.

Image: CSLP4 5 6 Landscape
CSLP4 Landscape (foreground only).

Soil Profile Morphology:

Surface Soil

A1	0-12 cm	Black (2.5Y2.5/1); light coarse sandy loam; massive; sandy fabric; very weak consistence dry; many roots present; pH 5.0; clear and wavy change to: NOTE: Peat layer of 1-2 cm at 10 cm depth.	No pit photo available.
A2	12-20 cm	Grey (Gley2 5/5B) (Gley1 N 6/ dry); coarse sandy loam; fine single grain structure; sandy fabric; very weak consistence dry; common amount of roots present; pH 4.7; change to:
2A1	20-42 cm	Dark grey (Gley1 N 4/) sporadically bleached; sand; fine single grain structure; sandy fabric; weak consistence dry; a common amount of roots present; pH 4.3; change to:
2A2	42-50 cm	Dark brown (7.5YR3/1); loamy coarse sand; massive; sandy fabric; firm consistence moderately moist; very few roots present; humus accumulation; pH 4.3; change to:
Subsoil
2Bhs	50-57 cm	Very dark brown (7.5YR2.5/1) with many distinct, dark brown (7.5YR3/3) mottles; loamy coarse sand; massive; sandy fabric; very strong consistence moderately moist; very strongly cemented continuous pan evident; pH 4.4; change to:
2BC	57-110 cm	Yellow (10YR7/5) with many prominent yellowish brown (10YR5/6) and dark yellowish brown (10YR3/4) mottles; loamy coarse sand; massive; sandy fabric; very strong consistence dry; very strongly cemented sandy continuous pan evident; pH 4.4.

Soil Profile Characteristics:

	pH	Salinity Rating	Sodicity	Dispersion
Surface (A1 horizon)	Strongly Acid	Low	Non-Sodic	None
Subsoil (B2hs horizon)	Extremely Acid	Low-Medium	Non-Sodic	None
Deeper Subsoil (at 57-110 cm)	Extremely Acid	Low-Medium	Non-Sodic	None

The surface horizon is strongly acid. The subsoil is extremely acid.

The salinity rating in the surface soil is low. The subsoil has a low to medium salinity rating.

This profile is non-sodic.

Low clay content throughout this profile.

The exchangeable aluminium levels in the surface are low. From 50cm depth the levels increase and become very high.

Horizon	Horizon Depth (cm)	pH (water)	pH CaCl2	EC (dS/m)	Exchangeable Cations
					Ca	Mg	K	Na
					meq/100g
A1	0-12	5	4.4	0.09	7.30	0.56	0.15	0.26
A2	12-20	4.7	3.9	0.06	2.60	0.31	0.11	0.21
2A1	12-42	4.3	3.8	0.06	0.45	0.08	0.06	0.14
2A2	42-50	4.3	3.8	0.1	0.54	0.15	0.12	0.26
2Bhs	50-57	4.4	4.2	0.17	0.41	0.21	0.17	0.34
2BC	57-110	4.4	4.6	0.21	0.05	0.14	0.25	0.38

Horizon	Horizon Depth (cm)	Exchangeable Acidity meq/100g	Organic Carbon g/100g	Field Capacity pF2.5	Wilting Point pF4.2	Exchangeable Aluminium mg/kg	Coarse Sand (0.2-2.0 mm)	Fine Sand (0.02-0.2 mm)	Silt (0.002-0.02 mm)	Clay (<0.002 mm)


A1	0-12	14	6.6	37.3	16.9	<10	38	43	8	10
A2	12-20	7.5	2.6	14.6	4.5	<10	38	46	2	6
2A1	12-42	2.7	0.51	10.6	1.1	<10	36	52	3	6
2A2	42-50	9	1.6	12	2.4	74	34	49	8	8
2Bhs	50-57	19	2.7	18	6.7	240	30	44	12	6
2BC	57-110	21	1.3	34.7	11.8	130	28	41	14	8

Profile Described By: David Rees, Michelle Davey, Nathan Robinson (November 2008).

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