Ross Sea Region Soil Sites
745000
745
9-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
SS11 T2; 31 m north-northwest of the water storage tanks alongside the track to the storage area; a smooth surfaced area that has had some disturbance from land shaping |
operations and which receives some runoff |
9
NE
23
cf. Notes for GEOLAND below
(9o)
Xerous to subxerous; the site is moist from seepage runoff from nearby permafrost |
disturbance and from surface snow thaw |
-18
Coastal mountain
Disturbed scrape and fill material formed through land reshaping activities
None observed
Nil
SURFACE WEATHERING or |
SURFACE FEATURES |
There are surface salt efflorescences around the site; the surface has fewer stones than elsewhere
The ground surface has been disturbed by scraping activities for the construction of storage areas and access ways; foreign materials are mainly wood |
fragments |
745a 0-1cm
101
light grey to grey (10YR 6/1) sandy granule gravel forming a weakly developed surface crust with salt |
efflorescences |
102
some particles of foreign material
103
sharp boundary,
745b 1-20cm
201
greyish brown (10YR 5/2) gravelly sand
202
moderately cohesive
203
distinct boundary,
745c 20-32cm
301
dark greyish brown (10YR 4/2) cobbly granular gravel
302
moderately cohesive
303
moist
304
sharp boundary, on ice-cemented frozen ground
Yes (IGNS)
Hard ice-cemented
32
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 |
74500001
745a
0-1cm
0
1
none
74500002
745b
1-20cm
1
20
none
74500003
745c
20-32cm
20
32
none
74500001
66.40
8.30
74500002
54.60
7.30
74500003
53.30
7.20
74500004
73.10
9.90
74500005
50.50
0.80
74500001
8.80
1.32
74500002
9.40
0.28
74500003
9.40
0.22
74500004
9.40
0.20
74500005
9.40
0.31
74500001
74500002
74500003
74500004
74500005
12-Dec-2005
Page 705 of 896
745