Ross Sea Region Soil Sites
726000
726
1-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
5
SE
75
cf. Notes for GEOLAND below
(5o)
(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
726
101
surface active zone, approximately 30cm, removed by bulldozer
726a 0-13cm
201
top of frozen ground
726b 13-28cm
301
726c 28-44cm
401
726d 44-52cm
501
726e 52-71cm
601
726f 71-104cm
701
726g 107-117cm
801
726h 117-124cm
901
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 E part of the disturbed portion 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 |
72600001
726a
0-13cm
0
13
2.07
32.00
8.42
17.00
0.17
none
72600002
726b
13-28cm
13
28
1.31
19.00
42.44
85.00
0.55
none
72600003
726c
28-44cm
28
44
1.57
26.00
44.08
88.00
0.69
none
72600004
726d
44-52cm
44
52
0.66
62.00
144.43
289.00
0.95
none
72600005
726e
52-71cm
52
71
3.30
12.00
23.83
48.00
0.79
none
72600006
726f
71-104cm
71
104
0.76
27.00
65.77
132.00
0.50
none
72600007
726g
107-117cm
107
117
1.55
2.00
12.32
25.00
0.19
none
72600008
726h
117-124cm
117
124
3.92
25.00
13.44
27.00
0.63
none
72600001
32.00
8.40
72600002
19.00
42.40
72600003
26.00
44.10
72600004
62.00
144.40
72600005
12.00
23.80
72600006
27.00
65.80
72600007
2.00
12.30
72600008
25.00
13.40
72600001
72600002
72600003
72600004
72600005
72600006
72600007
72600008
72600001
72600002
72600003
72600004
72600005
72600006
72600007
72600008
12-Dec-2005
Page 684 of 896
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