GL107

Site: GL107	Land Unit: Dundas Redgum
*Aust. Soil Class.:* Ferric (Reticulate?), Eutrophic, Brown CHROMOSOL (confidence level 1).

Soil pit GL107 landscape

General Land Unit Description:
The flat surface of the Dundas Tablelands predominantly consists of Brown Chromosols with a ferric horizon, typically occurring above the clay subsoil. The soil is commonly developed over a highly weathered mottled zone. This red and white mottling, sometimes referred to as ‘tiger mottles’ is thought to be the result of deep chemical weathering which occurred during the late Tertiary period. Red gums are the dominant vegetation found on this surface.

Site Description:

Geology: Cainozoic duricrust	Landform pattern: Elevated plain/plateau
Position in landscape: Flat	Internal drainage: Moderately well - imperfectly drained

Soil Profile Morphology

A1	0-15 cm	Very dark brown (10YR2/2) sandy loam, apedal to weak structure, firm consistence when dry, pH 5.4. Transition to:
	Subsoil
B1	15-40 cm	Very dark greyish brown (10YR3/2) sandy clay, massive structure, very firm consistence when dry, a few ferruginised nodules, pH 6.0. Transition to:
B21	40-70 cm	Light medium clay, ferruginised nodules are abundant, pH 6. Transition to:
B22	70-107 cm	Light clay, a few organic segregations, many ferruginised nodules, pH 6.7.

Key profile features:

Strongly acidic topsoil
Ferruginous nodules in subsoil
Top of the subsoil dispersive when worked when wet

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