GHF09d

Location: Byaduk

Australian Soil Classification: Ferric, Brown CHROMOSOL
General Landscape Description: Level plain
Site Description: Flat
Land Unit: Warrakbook Basalts
Geology: Quaternary basalt

General Land Unit Description: This land unit consists of gently undulating basalt plains in the Macarthur area. In some drainage lines, the basalt has been dissected sufficiently to expose the underlying sediments. The soils on the basalt plains are commonly Brown Kurosols or Chormosols, intermixed with Sodosols, particularly on the lower slopes and drainage depressions.






Soil Profile Morphology

Surface

A1	0-17 cm	Dark brown (10YR3/3) clay loam, weak granular structure (10-20 mm), very weak consistence when moist, few medium ferruginous nodules, many very fine macropores, areal porosity 0.5%, many medium roots. Clear and smooth transition to:
A21	17-32 cm	Yellowish brown (10YR5/4) clay loam, unable to assess structure or macroporosity due to segregations present, moist, very many medium ferruginous nodules, few fine roots. Abrupt and smooth transition to:
Subsoil
B21	32-70 cm	Brown (10YR5/6) with common medium distinct red (2.5YR5/8) mottles, light medium clay, moderate polyhedral structure (20-50 mm) parting to moderate granular structure (5-10 mm), weak consistence when moderately moist, few medium ferruginous nodules, common very fine macropores, areal porosity 0.05%, few very fine roots. Diffuse and smooth transition to:
B22	70-100 cm	Brown (10YR6/4) with many coarse distinct red (2.5YR5/8) mottles, light medium clay, moderate polyhedral structure (20-50 mm) parting to moderate granular structure (5-10 mm), weak consistence when moderately moist, few medium ferruginous nodules, few very fine macropores, areal porosity 0.03%, few very fine roots. Diffuse and smooth transition to:
B23	100-150 cm	Yellowish brown (10YR7/1) with many very coarse prominent brownish yellow (10YR6/6) and reddish brown (2.5YR4/4) mottles, medium clay, moderate polyhedral structure (20-50 mm) parting to moderate granular structure (5-10 mm), firm consistence when moderately moist, few coarse ferruginous soft segregations, few very fine macropores, areal porosity 0.01%, few very fine roots.
	150-250 cm	Similar to layer above.
	250-320 cm	Well fissured heavy clay.
	320-400 cm	Weathered vesicular basalt, remnant root channels to 400 cm.

Notes: Ferruginous nodules are actually iron cemented sands.


Profile Described By: Ian Sargeant, Paul Feikmea and Martin Clark, 3rd November 2000.