GHF09c

Location: Byaduk

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

General Land Unit Description: This land unit is a complex unit of steep slopes leading to drainage lines and gently undulating plains leading to the slopes, south east of Branxholme. The soils on the slopes leading to the drainage lines tend to be shallower than those on the plains. The soils on the plains commonly have a sandy topsoil with a bleached A2 horizon over a clay subsoil. A co-dominant soil type is a soil type lacking the sandy topsoil and tends to have a gradual increase in clay (Dermosol) similar to this site. These soils are intermixed with Sodosols.




Soil Profile Morphology

Surface

A1	0-25 cm	Dark greyish brown (10YR4/2); loamy sand; single grain structure; loose consistence, moist; common medium roots present; gradual and smooth transition to:
A2	25-50 cm	Brown (10YR5/3); loamy sand; single grain structure; loose consistence, moist; common medium roots present; clear and smooth transition to:
A3	50-60 cm	Brown (10YR5/3); loamy sand; single grain structure; loose consistence, moist; contains many coarse ferruginous nodules; a few fine roots present; abrupt and smooth transition to:
Subsoil
B21	60-100 cm	Yellowish brown (10YR5/6), with common medium distinct red (2.5YR4/8) and dark red (2.5YR3/6) mottles; light medium clay; strong coarse polyhedral structure, parting to strong medium granular structure; weak consistence, moderately moist; contains a few coarse ferruginous nodules; common very fine macropores evident; a few very fine roots present; diffuse and smooth transition to:
B22	100-150 cm	Brown (10YR6/1), with many very coarse prominent red (2.5YR4/8) and dark red (2.5YR3/6) mottles; medium clay; strong coarse polyhedral structure, parting to strong mdeium granular structure; weak consistence, moderately moist; contains a few coarse ferruginous nodules; few very fine macropores evident; contains a few very fine roots; changes to:
	150-270 cm	Similar to layer above.
	270-390 cm	Highly weathered vesicular basalt; mottled red and grey clays; live roots growing in old root channels down to 390 cm; no root impeding layer.

Note: Ferruginous nodules are actually iron cemented sands.


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