GL122

Site: GL122	Land Unit: Glenelg River Granite
*Aust. Soil Class.:* Eutrophic, Mottled-Subnatric, Black SODOSOL (confidence level 1)

Soil pit GL122 landscape

General Land Unit Description:
In the steeper dissected valleys of the tablelands, where the duricrust has been eroded, weathered parent material becomes exposed. This example is of highly weathered granite. This site illustrates the range of soil types and parent material that have been exposed due to weathering of the tablelands and highlights the difficulty of mapping all the geologies and soil types at this scale.

Soil pit GL122 auger

Site Description:

Slope: 3%	Geology: Ordovician granite
Landform pattern: Low hills	Position in landscape: Lower slope / drainage depression
Internal drainage: Imperfectly drained

Soil Profile Morphology

A11	0-10 cm	Black (10YR2/1) coarse sandy clay loam, weak subangular blocky structure (5-10 mm), pH 5.4. Transition to:
A12	10-25 cm	Black (10YR2/1) coarse sandy clay loam, massive structure, pH 5.4. Transition to:
A2	25-40 cm	Very dark grey (10YR3/1) loamy coarse sand, sporadically bleached, grey (10YR6/1) when dry, massive structure, pH 5.9; transition to:
	Subsoil
B21	40-80 cm	Very dark greyish brown (10YR3/2), sandy medium heavy clay, many distinct orange mottles, massive subangular blocky structure (5-10 mm), pH 5.6. Transition to:
B22	80-140 cm	Dark greyish brown (2.5Y3/2), sandy medium heavy clay, weak to massive structure, segregations and weathered kaolinite fragments are abundant, pH 5.9.

Key profile features:

Acidic topsoil
Sodic topsoil
Mottled subsoil
Topsoil dispersive when worked when wet
Subsoil dispersive when dry

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