Talbotville (Symbol: Te)

Profile No. 11 (Aldrick et al, 1967)

Geology
Palaeozoic sediments, mudstones, siltstones, sandstones and shales, occasionally metamorphosed.

Landform
In the context of this report, the Talbotville Map unit encompasses rolling to steep hills with an elevation range of about 350 to 1200 m. The slope gradients exceed 15% but are generally much steeper, commonly 40 – 70%. The relief ranges from 90 – 300 m.


Steep forested hills of the Talbotville Map unit in the background

Soils
Steep slopes, slow-weathering sedimentary rocks and rainfall inadequate enough to support vigorous and dense vegetation, give rise to active natural erosion and slow soil formation. Thus the soils tend to be shallow, stony, leached, acidic and weakly structured. Where areas have been denuded of vegetation, for example north of Smoking Hill where it was removed to support the mining industry, the soils are prone to severe sheet erosion. On the valley floors where soil has accumulated, gully erosion can be quite severe.

Vegetation
Shrubby dry forest with montane dry woodland at higher altitudes.

Severe gully erosion often occurs in the cleared valleys.

Profile No. 11 (Aldrick et al, 1992)

Location: 17 km NW Dargo	Geo. Ref.: 511900E 5867230N
Australian Soil Classification: Acidic, Dystrophic,Brown Kandosol	Shallow soil on fractured rock
General landscape description: Steep hills
Geology: Palaeozoic siltstones and shales
Site description: North aspect (28% slope)
Land use: Forest
Native vegetation: Shrubby dry forest
Map unit: Talbotville

Surface soil			Shallow stony typical Talbotville soil profile: Cutting along Bairnsdale – Dargo Road
A1 Subsoil B R	0 – 5 cm 5 – 22 cm 22+ cm	Dark brown to brown (7.5YR4/4); gravelly clay loam; apedal; slightly hard dry; 30% small bedrock fragments up to 20 mm, clear boundary to: Strong brown (7.5YR5/6); gravelly clay loam; apedal; friable, moist; 30% small bedrock fragments up to 20 mm; fragments up to 80 mm common below 10 cm: Bedrock.
Key profile features soil will only support only shrubby vegetation.

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
A1	0-5	ZL	4.8		<0.05	18	18	31	19
B	5-10	ZL	5.0		<0.05	15	23	34	23
B	10-20	ZCL	5.0		<0.05	13	22	35	28

Depth	OrgC#	Total N	Free Fe2O3	Exch. Al	Exchangeable cations cmol (+) /kg							Ca:Mg	ESP
cm	%	%	% w/w	ppm	Ca	Mg	K	Na	Total	H	CEC
0-5	3.8	0.19	2.6		0.05	0.09	0.7	0.07	0.9	30.5	31.4		<1
5-10	1.8	0.11	2.9		<0.05	0.05	0.7	0.09	0.9	20.7	21.6		<1
10-20	1.8	0.10	3.3		<0.05	0.08	0.7	0.05	0.9	21.2	22.1		<1

• Plant available water will be low for pasture species where the roots are unable to find their way through cracks in the rock.
• The shallow soils have extremely low nutrient and water holding capacity.
• The surface soils are strongly acid. If pastures are to grow the soils need lime and heavy amounts of fertiliser. They are best left under native vegetation.