Ross Sea Region Soil Sites
744000
744
7-Jan-1994
IBC, GGC, DSS
Pram Point, Scott Base
For determination of sources and levels of soil contaminants around Scott Base
not recorded
Pro CS & Lscp
No
166.7670
-77.8500
77deg 51.0'S
-166deg -46.0'E
SS10 T2; 29.5 m north northwest of the north corner of the powerhouse building; on the northern edge of a cut surface forming the road access to the north side of Scott Base |
buildings |
7
S
17
cf. Notes for GEOLAND below
(7o)
Xerous to subxerous; the site is currently dry but receives runoff water during thaw periods
-18
Coastal mountain
Sub-surface fragmented scoria bedrock and gravel formed through removal of unfrozen surface layers
None observed
Nil
SURFACE WEATHERING or |
SURFACE FEATURES |
Some thin salt efflorescent patches; some foreign materials present
The ground surface has been cut to form road access to base buildings
744a 0-1cm
101
light grey to grey (10YR 6/1) pebbly granular gravel
102
loose
103
dry
104
distinct boundary,
744b 1-10cm
201
dark grey to dark greyish brown (10YR 4/1 - 4/2) cobbly sandy scoria gravel
202
loose to slightly cohesive
203
moist indistinct boundary,
744c 10-35cm
301
dark grey to dark greyish brown (10YR 4/1 -4/2) bouldery scoria gravel
302
loose
303
moist
304
sharp boundary, on ice-cemented frozen ground
Yes (IGNS)
Hard ice-cemented
35
1
Geoland
The materials comprise volcanics of the McMurdo Volcanics Formation mainly as scoriaceous lava flows; the surface materials are a thin cover of mainly |
fractured bedrock with addition of some glacially derived granular and pebble clasts from outside the immediate area; the volcanic bedrock has been |
considerably fractured by patterned ground 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 |
74400001
744a
0-1cm
0
1
none
74400002
744b
1-10cm
1
10
none
74400003
744c
10-35cm
10
35
none
74400001
37.50
4.30
74400002
53.40
4.90
74400003
47.90
5.30
74400004
67.50
5.40
74400005
61.60
5.10
74400006
66.20
6.50
74400001
9.00
0.96
74400002
9.50
0.26
74400003
9.40
0.17
74400004
9.50
0.19
74400005
9.70
0.21
74400006
9.70
0.19
74400001
74400002
74400003
74400004
74400005
74400006
12-Dec-2005
Page 704 of 896
744