Recent marine (Symbol: rm)

Profile No. 771 (Nicholson, 1978)

Geology
Recent marine sediments with some aeolian sediments.

Landform
Low dunefields and tidal flats. This map unit encompasses salt marshes and low dunes and intervening flats mostly lower than 5 m above sea level.

Soils and lanforms of the Bairnsdale Dargo region - a guide to the major agricultural soils of East Gippsland 2011 - Recent marine landform
Salt marsh and low dunes generally less than 5 m above sea level

Previous maps and Reports
This map unit was included under the Clydebank, Wollaston and Morass Land Systems by Aldrick et al. (1992) and under Wulla Wullock with minor occurrences of Colquhoun by Nicholson (1978). Areas where dunes higher than 5 m above sea level occur are mapped as the Seacombe map unit.

Soils
The soils of the low dunes are likely to be alkaline sands, with low areas periodically affected by the tide likely to be alkaline and saline sands and clays. Shell fragments usually occur within the soil profile.

Native Vegetation
Complex of salt marsh and damp sands herb-rich woodland mostly under National and State Parks.

Soils and lanforms of the Bairnsdale Dargo region - a guide to the major agricultural soils of East Gippsland 2011 - Recent marine landuse

Profile No. 771 (Nicholson, 1978)

Location: Not specified
Australian Soil Classification: Arenic RUDOSOL
General landscape description: Not specified
Geology: Holocene marine sediments
Site description: Not specified
Land use: Not specified
Native vegetation: Not specified
Map unit: Recent marine

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.

Soil profile characteristics

Horizon	Depth cm	Field texture	pH water	EC dS/m	Gravel %	Coarse sand %	Fine sand %	Silt %	Clay %	Field cap. % w/w	Wilt. point % w/w	PAW* water % w/w
Flood deposit	0-4	FSL	8.3	6.3	5#	22	44	1	5
A1	4-6	FS	8.8	1.7	2#	33	54	1	2
C	6-10	FS	9.0	0.87	3#	24	67	<1	1
C	10-20	KS	9.1	0.61	4#
C	20-30	KS	9.1	0.62	3#
C	50-60	KS	8.4	1.0	3#	56	36	<1	2
D	70-80	KS	8.1	2.1	43#	58	19	2	9

* PAW refers to plant available water. This is the difference between the soil’s water content at field capacity and wilting point.
^#Shells

Depth	Org C	Total N	Free Fe₂O₃	Exch. Al	Exchangeable cations cmol(+)/kg							Ca:Mg	ESP
cm	%	%	% w/w	ppm	Ca	Mg	K	Na	Total	H	CEC
0-4	2.0	0.18	1.0		7.8	7.8	1.0	4.0	20.6	0	20.6
4-6	0.52	0.05	0.1		4.8	2.7	0.4	1.3	9.2	0	9.2
6-10	0.24	0.03	0.1		3.1	1.2	0.2	0.4	4.9	0	4.9
10-20	0.08	0.01
20-30	0.05	0.01
50-60			0.3		3.2	0.7	0.2	0.3	4.4	0	4.4
70-80			0.3		6.1	2.4	0.8	1.4	10.7	0	10.7	2.5	13

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