Victorian Resources Online (archived)

EGN771

Australian Soil Classification: Arenic RUDOSOL

Map Unit: Recent marine
Previous Site Name: 771

Geology: Holocene marine sediments

Soil Profile Morphology:

Surface Soil

Flood deposit	0-4 cm	Fine sandy loam; pH 8.3; changes to:
A1	4-6 cm	Fine sand; pH 8.8; changes to:
Subsoil
C	6-10 cm	Fine sand; pH 9.0; changes to:
C	10-20 cm	Coarse sand; pH 9.1; changes to:
C	20-30 cm	Coarse sand; pH 9.1; changes to:
C	50-60 cm	Coarse sand; pH 8.4; changes to:
D	70-80 cm	Coarse sand; pH 8.1.

Key Profile Features:

Sand textures throughout.
The EC values indicate the soil is saline, alkaline and would only support salt marsh species.
Shells are present throughout the profile.

Chemical and Physical Analysis:

Horizon	Horizon Depth (cm)	pH (water)	EC dS/m	Organic Carbon %	Total Nitrogen %	Exchangeable Cations				Gravel %	Coarse Sand (0.2-2.0 mm) %	Fine Sand (0.02-0.2 mm) %	Silt (0.002-0.02 mm) %	Clay (<0.002 mm) %
						Ca	Mg	K	Na
						meq/100g
Flood deposit	0-4	8.3	6.3	2.0	0.18	7.8	7.8	1.0	4.0	5^#	22	44	1	5
A1	4-6	8.8	1.7	0.52	0.05	4.8	2.7	0.4	1.3	2^#	33	54	1	2
C	6-10	9.0	0.87	0.24	0.03	3.1	1.2	0.2	0.4	3^#	24	67	<1	1
C	10-20	9.1	0.61	0.08	0.01					4^#
C	20-30	9.1	0.62	0.05	0.01					3^#
C	50-60	8.4	1.0			3.2	0.7	0.2	0.3	3^#	56	36	<1	2
D	70-80	8.1	2.1			6.1	2.4	0.8	1.4	43^#	58	19	2	9

^#Shells

Profile Described By: Bruce Nicholson, 1978.

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