Ross Sea Region Soil Sites
731000
731
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
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; 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 |
Surface clasts show some slight wind polsh but no surface oxidation; pavement between larger clasts is predominantly granular- pebble sized; some thin |
surface salt accumulations are formed near patches of 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 |
731a 0-2cm
101
731b 2-8cm
201
731c 8-16cm
301
731d 16-25cm
401
731e 25-37cm
501
top of frozen ground
731f 37-50cm
601
731g 50-66cm
701
731h 66-84cm
801
731i 84-105cm
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 in the southern end or the 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 |
73100001
731a
0-2cm
0
2
10.00
0.36
1.00
none
73100002
731b
2-8cm
2
8
57.00
2.56
5.00
none
73100003
731c
8-16cm
8
16
51.00
3.85
8.00
none
73100004
731d
16-25cm
16
25
50.00
4.90
10.00
none
73100005
731e
25-37cm
25
37
1.15
38.00
32.51
65.00
0.37
none
73100006
731f
37-50cm
37
50
1.72
31.00
37.87
76.00
0.65
none
73100007
731g
50-66cm
50
66
1.97
26.00
25.44
51.00
0.50
none
73100008
731h
66-84cm
66
84
2.12
31.00
33.50
67.00
0.71
none
73100009
731i
84-105cm
84
105
1.69
37.00
15.28
31.00
0.26
none
73100001
10.00
0.36
73100002
57.00
2.56
73100003
51.00
3.85
73100004
50.00
4.90
73100005
38.00
32.50
73100006
31.00
37.87
73100007
26.00
25.44
73100008
31.00
33.50
73100009
37.00
15.28
73100001
73100002
73100003
73100004
73100005
73100006
73100007
73100008
73100009
73100001
73100002
73100003
73100004
73100005
73100006
73100007
73100008
73100009
12-Dec-2005
Page 689 of 896
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