Ross Sea Region Soil Sites
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2-Jan-1994
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
8
SE
75
cf. Notes for GEOLAND below
(8o)
(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; surface of the soil to approximately 30cm depth was removed by bulldozer
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 |
Freshly cut surface is uniformly greyish brown without weathering features
cf. Notes for PREVDIST below
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101
surface active zone, approximately 30cm, removed by bulldozer
728a 0-13cm
201
top of frozen ground
728b 13-30cm
301
728c 30-46cm
401
728d 46-56cm
501
728e 56-73cm
601
728f 73-96cm
701
728g 96-102cm
801
No
Hard frozen and ice cemented with segregated ice
0
1
(At ground surface)
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 southeast of the disturbed 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 |
Prevdist
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; at this site the active layer has been removed |
Soluble Salt |
Concentration |
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728a
0-13cm
0
13
1.70
49.00
18.54
37.00
0.32
none
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728b
13-30cm
13
30
1.40
42.00
40.43
81.00
0.57
none
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728c
30-46cm
30
46
2.31
40.00
47.43
95.00
1.10
none
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728d
46-56cm
46
56
1.49
9.00
24.23
48.00
0.36
none
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728e
56-73cm
56
73
2.60
20.00
23.59
47.00
0.61
none
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728f
73-96cm
73
96
1.65
32.00
23.92
48.00
0.40
none
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728g
96-102cm
96
102
3.39
9.00
13.72
27.00
0.47
none
72800001
49.00
18.50
72800002
42.00
40.40
72800003
40.00
47.40
72800004
9.00
24.20
72800005
20.00
23.60
72800006
32.00
23.90
72800007
9.00
13.70
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12-Dec-2005
Page 686 of 896
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