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EGG7

Location: Angus Vale

Australian Soil Classification: Haplic, Pedaric, Red CHROMOSOL

Previous Site Names: EG7, EG251
General Landscape Description: Undulating rises
Site Description: Upper slope of a low crest (4%)
Geology: Upper Devonian rhyolite

EG7 landscape
EG7 Landscape - Photo taken from pit site. The terrace of the Mitchell River is in the middle-ground




Soil Profile Morphology:

Surface Soil

A110-15 cmDark reddish brown (5YR3/2); fine sandy clay loam; moderate medium granular parting to fine granular structure; weak consistence moist; contains a few angular rhyolite cobbles; pH 5.9; gradual change to:


EG7 profile
EG7 Profile
A2215-30 cmReddish brown (5YR4/4); fine sandy clay loam; moderate medium polyhedral structure; weak consistence moist; contains many angular rhyolite pebbles; pH 6.5; clear change to:


Subsoil


B230-55 cmReddish brown (2.5YR4/4); medium clay, sandy; medium to strong polyhedral parting to fine polyhedral structure; firm consistence moist; few angular medium rhyolite pebbles present; pH 7.1; clear and wavy change to:


B355-90 cmReddish brown (5YR4/4); light clay, sandy; weak medium polyhedral structure; firm consistence moist; common angular fine rhyolite pebbles present; pH 7.3; clear and wavy change to:


C90+ cmWeathering rhyolite.


Soil Profile Characteristics:

EG7 graphs


Chemical and Physical Analysis:

Horizon
Horizon Depth
(cm)
pH
(water)
pH
(CaCl
2)
EC
dS/m
Organic Carbon
%
Exchangeable Acididty
meq/100g
Exchangeable Cations
Coarse Sand
(0.2-2.0 mm)
%
Fine Sand
(0.02-0.2 mm)
%
Silt
(0.002-0.02 mm)
%
Clay
(<0.002 mm)
%
Field Capacity
% w/w
Wilting Point
% w/w
Ca
Mg
K
Na
meq/100g
A11
0-15
5.9
4.9
0.06
2.9
12.0
4.1
1.5
1.0
0.15
24
39
13
15
31.6
10.0
A12
15-30
6.5
5.4
<0.05
0.77
6.4
4.9
1.8
0.58
0.13
35
38
10
16
23.0
7.1
B2
30-55
7.3
6.6
<0.05
5.2
12.0
8.1
0.11
0.21
29
40
10
20
25.7
10.1
B3
55-90
7.1
6.4
<0.05
7.9
12.0
6.9
0.61
0.17
15
30
10
41
38.4
17.5


Profile Described By: David Ress and Ian Sargeant, 22nd September 2005.
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