Ross Sea Region Soil Sites
720000
720
30-Dec-1993
IBC,GGC,MRB,DIC
Pram Point, Scott Base
Soil moisture, permafrost monitoring and soil climate measurement
not recorded
CS Lscp
No
166.7670
-77.8500
77deg 51.0'S
-166deg -46.0'E
cf. Notes for DESCR below
7
SE
75
cf. Notes for GEOLAND below
(7o)
(m .. 75m)
0
17.0
surface
| Xerous to subxerous; soil is moist below the surface; some moisture derived from small |
| transient snow banks |
-18
Coastal mountain
Fragmented bouldery volcanic bedrock with some additions of glaciogenic finer materials, in part with some modification by slope drift processes
A few small patches of yellow lichen and some moss in the general vicinity
Weakly developed and without distinctive trough expression or well developed net pattern
| SURFACE WEATHERING or |
| SURFACE FEATURES |
| Surface boulder clasts show some slight wind polish but no surface oxidation; pavement between larger clasts is dominantly granular-pebble sized; some |
| thin surface salt accumulations occur near wet patches formed by snow melt |
| No evidence of past mechanical disturbance at the immediate trial site area but moderate foot traffic disturbance is very likely; present disturbance includes |
| the presence of numerous particles of introduced organic and inorganic materials |
720a 1-0cm
101
720b 0-5cm
201
720c 5-10cm
301
720d 10-15cm
401
720e 15-20cm
501
720f 20-30cm
601
720g 30-45cm
701
top of frozen ground
720h 45-56cm
801
720i 56-72cm
901
720j 72-84cm
1001
720k 84-105cm
1101
720l 105-140cm
1201
No
Hard frozen and ice cemented with segregated ice
36
1
(36cm)
Descr
| A gently sloping area forming a small bench on a moderately steep slope between Crater Hill and the east coast of Ross Island approximately 150m northwest |
| from the Scott base buildings; drill hole and access tube site located in the southern undisturbed part of an experimental area |
Geoland
| The deposit comprises volcanics of the McMurdo Volcanics Formation mainly as scoriaceous flows; the surface materials are a thin cover of mainly fractured |
| bedrock with addition of glacially derived granular and pebble clasts from outside the immediate area; the volcanic bedrock has been considerably fractured by |
| freeze thaw; the surface age is probably very late Pleistocene (Ross Sea Glaciation) having been modified by McMurdo Sound filling glacial ice |
| Soluble Salt |
| Concentration |
72000001
720a
1-0cm
-1
0
20.00
0.58
1.00
none
72000002
720b
0-5cm
0
5
65.00
2.49
5.00
none
72000003
720c
5-10cm
5
10
53.00
2.91
6.00
none
72000004
720d
10-15cm
10
15
87.00
4.34
9.00
none
72000005
720e
15-20cm
15
20
57.00
4.40
9.00
none
72000006
720f
20-30cm
20
30
39.00
4.89
10.00
none
72000007
720g
30-45cm
30
45
1.75
48.00
15.28
31.00
0.27
none
72000008
720h
45-56cm
45
56
0.94
139.00
19.73
39.00
0.19
none
72000009
720i
56-72cm
56
72
2.57
49.00
20.68
41.00
0.53
none
72000010
720j
72-84cm
72
84
2.34
48.00
18.53
37.00
0.43
none
72000011
720k
84-105cm
84
105
2.37
42.00
11.96
24.00
0.28
none
72000012
720l
105-140cm
105
140
1.72
41.00
14.63
29.00
0.25
none
72000001
20.00
0.58
72000002
65.00
2.49
72000003
53.00
2.91
72000004
87.00
4.34
72000005
57.00
4.40
72000006
39.00
4.90
72000007
48.00
15.30
72000008
48.00
19.70
72000009
49.00
20.70
72000010
48.00
18.50
72000011
42.00
12.00
72000012
41.00
14.60
72000001
72000002
72000003
72000004
72000005
72000006
72000007
72000008
72000009
72000010
72000011
72000012
72000001
72000002
72000003
72000004
72000005
72000006
72000007
72000008
72000009
72000010
72000011
72000012
12-Dec-2005
Page 678 of 896
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