Ross Sea Region Soil Sites
730000
730
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
4
SE
75
cf. Notes for GEOLAND below
(4o)
(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
730
101
surface active zone, approximately 30cm, removed by bulldozer
730a 0-10cm
201
top of frozen ground
730b 10-15cm
301
730c 15-36cm
401
730d 36-52cm
501
730e 52-92cm
601
730f 92-120cm
701
730g 120-128cm
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 near the centre 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 |
73000001
730a
0-10cm
0
10
0.99
4.00
41.37
83.00
0.41
none
73000002
730b
10-15cm
10
15
2.85
35.00
42.70
85.00
1.22
none
73000003
730c
15-36cm
15
36
1.65
19.00
34.43
69.00
0.57
none
73000004
730d
36-52cm
36
52
1.83
28.00
53.61
107.00
0.98
none
73000005
730e
52-92cm
52
92
1.67
21.00
32.73
65.00
0.55
none
73000006
730f
92-120cm
92
120
1.93
54.00
43.90
86.00
0.83
none
73000007
730g
120-128cm
120
128
2.09
41.00
42.18
84.00
0.88
none
73000001
4.00
41.40
73000002
35.00
42.70
73000003
19.00
34.40
73000004
28.00
53.60
73000005
21.00
32.70
73000006
54.00
43.10
73000007
41.00
42.20
73000001
73000002
73000003
73000004
73000005
73000006
73000007
73000001
73000002
73000003
73000004
73000005
73000006
73000007
12-Dec-2005
Page 688 of 896
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