MM679

Site: MM679	Land Unit: Victoria Valley Basalts
*Aust. Soil Class.:* Ferric, Mottled-Mesonatric, Brown SODOSOL (confidence level 3)

General Land Unit Description:
The near level basalt plains in the Victoria Valley and to the east of Cavendish consist of an association of Mottled Brown Chromosols and Sodosols with variable surface horizon depths. The very slight rises that occur on the plains often have a few scattered surface stones. There are soils with light textured surfaces in the vicinity of sand sheets bordering the Wannon River.

Site Description:

Geology: Quaternary basalt	Landform pattern: Level plains
Position in landscape: Upper slope - Crest	Internal drainage: Imperfectly drained

Soil Profile Morphology

A1	0-30 cm	Dark greyish brown (10YR4/2) sandy loam, pH 4.8. Transition to:
A2	30-90 cm	Light yellowish brown (10YR6/4) sand, bleached (10YR8/2) when dry, pH 4.9. Transition to:
	Subsoil
B21	90+ cm	Yellowish brown (10YR5/6) medium clay, weakly structured, red mottles (2.5YR4/6), segregations (<2 mm) are common, pH 6.2. Transition to:

Key profile features:

Deep sandy topsoil
Strongly acidic topsoil
Strong texture contrast between topsoil and subsoil
Bleached A2 horizon
Mottled subsoil

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