Delegate (Symbol: Dg)

EG223 | EG234

Geology
Palaeozoic sediments, some granites.

Landform
Undulating to rolling hills at elevations between 200 to 900 m with typical slope gradients generally less than 32% and a relief of 90 – 300 m


Photo taken near Murrungowar. Red gradational soil on granite Geo. Ref.: 649700E 5834700N

Native vegetation:
It is likely that the native vegetation would have been wet forest and damp forest.

Soils
These are deeply weathered soils may also occur on granites. Very few soil observations were made on this map unit, but they are likely to be red and brown gradational soils. Due to lack of observations, this map unit has not been subdivided into any components.

Land use
Most of the land is used for native forestry and plantation forestry, with some areas cleared for pasture.

Site EG223

Location: Bonang	Geo. Ref. 0669900E 5887030N
Australian Soil Classification: Acidic, Red DERMOSOL	Acidic red gradational soil
General landscape description: Rolling low hills
Geology: Palaeozoic sediments
Site description: Simple slope 2% south east
Land use: Grazing
Native vegetation: Wet forest
Mapping unit: Delegate

Surface soil			Roadside exposure adjoining site; deep red soil.
A11	0 – 38 cm	Dark reddish brown (5YR3/2); clay loam; moderate to strong fine 2 – 5 mm) granular structure; weak consistence dry; pH 5.2; gradual change to:
A12	38 – 60 cm	Reddish brown (5YR3/3); clay loam; moderate fine 2 – 5 mm) granular structure; weak consistence moist; pH 5.1.
Soil profile characteristics pH Salinity rating Sodicity Dispersion Slaking Surface soil (A11 horizon) Strongly acid Very low Non sodic None Water stable Subsurface (A12 horizon) Strongly acid Very low Non sodic None Slakes considerably 1 Slight after remoulding. Horizon Depth cm Field texture pH water pH CaCl2 EC dS/m Coarse sand % Fine sand % Silt % Clay % Field cap. % w/w Wilt. point % w/w PAW* water % w/w A11 0-20 CL 5.2 4.3 <0.05 17 29 20 25 30.3 13.3 20.0 A12 40-60 CL 5.1 4.3 <0.05 19 30 22 22 31.6 11.8 19.8 * PAW is plant available water. This is the difference between the soil water content at field capacity and wilting point.

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
0-20	4.3	0.21		220	1.5	0.87	0.59	0.14	3.1	16	19.1	1.7	1
40-60	3.0	0.11		290	0.79	0.34	0.14	0.12	1.4	17	18.4	2.3	1

Location: About 500m south of the Delegate River.	Geo. Ref. 0666200E 5881300N
Australian Soil Classification: Acidic, Dystrophic, Red DERMOSOL	Acidic red gradational soil
General landscape description: Rolling low hills
Geology: Ordovician sediments
Site description: Simple slope 2% south east
Land use: Hardwood plantation
Mapping unit: Delegate

Surface soil
A1	0 – 40 cm	Dark reddish brown (5YR3/3); clay loam; strong fine granular structure; very weak consistence, moist; pH 5.0; gradual change to:
Subsoil
B1	40 – 60 cm	Dark red (2.5YR3/6); light clay; moderate medium granular structure; weak consistence moist; pH 4.9; gradual change to:
B2	60 – 1.0+ m	Red (2.5YR4/6); medium clay; moderate medium polyhedral structure; firm consistence moist.
Soil profile characteristics Horizon Depth EC pH water pH CaCl2 Exchangeable cations cmol(+)/kg Ca:Mg ESP cm dS/m Ca Mg K Na Total H CEC A1 0-20 <0.05 5 4.3 0.31 0.41 0.39 0.13 1.24 17 18.2 0.8 1 B1 40-60 <0.05 4.9 4.3 0.14 0.29 0.16 0.14 0.73 18 18.7 0.5 1