MM580

Site: MM580	Land Unit: Glenthompson Metasediments
*Aust. Soil Class.:* Bleached-Ferric, Natric, Brown KUROSOL (confidence level 2)

General Land Unit Description:
This land unit occurs mainly around Glenthompson, although there are scattered occurrences around Balmoral. The landscape is mainly undulating rises with some gentle colluvial slopes. The major soil type on the rises and low hills is a Chromosol, which is commonly sodic at depth (MM583). A dominant soil type on the gentle slopes tends to be a Brown Sodosol (MM578). A co-dominant soil type on the gentle slopes, which is often found in association with the Sodosols, is represented by this site and is a Kurosol, which is often sodic at depth.

Site Description:

Geology: Cambrian coarse metasediments	Landform pattern: Gently undulating plains
Position in landscape: Lower slope	Internal drainage: Imperfectly drained

Soil Profile Morphology

A1	0-30 cm	Very dark greyish brown (10YR3/2) sandy loam, consistence very weak, pH 5. Clear transition to:
A2	30-50 cm	Pale brown (10YR6/3) sandy loam, conspicuously bleached (10YR7/2) when dry, many ferruginous nodules. Sharp transition to:
	Subsoil
B21	50-65 cm	Yellowish brown (10YR5/6) heavy clay, red (2.5YR4/6) mottles, strong blocky structure (20-50 mm), pH 5.

Key profile features:

Strongly acidic topsoil
Strongly acidic subsoil
Strong texture contrast between topsoil and subsoil
Bleached A2 horizon
Mottled subsoil
Topsoil dispersive when worked when wet
Subsoil dispersive when dry

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