SW105

Location: Cooriemungle

Australian Soil Classification: Mottled, Eutrophic, Brown DERMOSOL

General Landscape Description: Crest of rolling rise.
Site Description: Cattle grazing paddock.
Geology: Gellibrand Marl.

Soil Profile Morphology:

Surface Soil

A1	0-10 cm	Very dark greyish brown (10YR3/2); fine sandy clay loam; strong fine polyhedral structure; smooth faced peds; very weak consistence moist; pH 5.6; gradual and wavy change to:
Subsoil
B1	10-20 cm	Light olive brown (2.5Y5/3), with many (30%) distinct fine yellowish brown (10YR5/8) mottles; sporadically bleached; light clay (fine sandy); strong coarse angular blocky parting to moderate fine blocky structure; smooth faced peds; firm consistence moderately moist; contains a few medium (2-5 mm in size) organic root linings; pH 5.7; gradual and wavy change to:
B21	20-50 cm	Light olive brown (2.5Y5/3), with many (30%) distinct, medium sized yellowish brown (10YR5/8) mottles; medium clay; strong medium prismatic, parting to weak fine prismatic structure; smooth faced peds; firm consistence moderately moist; contains a few (<10%) organic root linings; pH 5.9; diffuse and wavy change to:

B22	50-80 cm	Yellowish brown (10YR5/8) with many (30%) light olive brown (2.5Y5/3) mottles; medium heavy clay: weakly structured; weak consistence moist; contains a few (<10%) organic root linings; pH 6.0; diffuse and wavy change to:
B23	80-110 cm	Light yellowish brown (2.5Y6/3) with many (40%) yellowish brown (10YR5/6) mottles; medium heavy clay; weakly structured; weak consistence moist; contains a few (<10%) organic root linings; pH 7.0; changing to:
B24	110-150 cm	Light grey (5Y7/1) with many brownish yellow (10YR6/6) mottles; clay; contains many coarse soft calcareous segregations; pH 9.2; changing to:
BC	150+ cm	Light grey (5Y7/1) with many brownish yellow (10YR6/6) mottles; clay; contains very many coarse soft calcareous segregations in patches.

Soil Profile Characteristics:

	pH	Salinity Rating	Sodicity	Dispersion
Surface (A1 horizon)	Moderately Acid	Low	Non-Sodic	None
Subsoil (B21 horizon)	Moderately Acid	Very Low	Non-Sodic	None
Deeper Subsoil (at 80-110 cm)	Very Strongly Alkaline	Very Low	Non-Sodic	--

The surface and the upper subsoil is moderately acid. The deeper subsoil is very strongly alkaline.

The salinity rating in the surface soil is low. The subsoil is very low.

The profile is non sodic throughout.

The clay content increases with depth.

Horizon	Horizon Depth (cm)	pH (water)	pH CaCl2	EC (dS/m)	Exchangeable Cations
					Ca	Mg	K	Na
					meq/100g
A1	0-10	5.6	4.9	0.1	8.1	2.1	0.35	0.31
B1	10-20	5.7	4.9	0.06	6.4	2.3	0.12	0.28
B21	20-50	5.9	4.9	0.05	7.9	3.5	0.15	0.37
B22	50-80	6	4.7	0.07	12	7.7	0.21	0.95
B23	80-110	7	5.9	0.07
B24k	110-150	9.2	8.3	0.17
B/C	150+

Horizon	Horizon Depth (cm)	Exchangeable Acidity meq/100g	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	0-10		23	2	42	30	24
B1	10-20	10	41	1	42	25	26
B21	20-50	10	48	0	36	23	37
B22	50-80	11	<10	0	21	13	62
B23	80-110
B24k	110-150
B/C	150+

Profile Described By: Natalie Baxter, Nathan Robinson and Richard McEwan (May 2001).

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