Ross Sea Region Soil Sites
737000
737
6-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
SS2 T1; this site is located at the south end of the geomagnetics area, 4.7m from the N corner of the southern most Wannagan building at Scott Base; the site is a slight knoll |
which is partly surrounded by a snow bank |
2
E
20
cf. Notes for GEOLAND below
(2o)
Xerous to subxerous; soil is moist below the surface; some moisture derived from adjacent |
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 and patterned ground-forming processes
Some small patches of green algae in damp spots
Weakly developed and without distinctive trough expression or well developed net pattern; the knoll may form the ceentre of a patterned ground unit
SURFACE WEATHERING or |
SURFACE FEATURES |
Some salt efflorescences are present; no visible surface weathering of the scoria; scoria boulders are 30-40cm across
Previous mechanical disturbance of this site is probably very limited and related to building construction; being within the geomagnetic area, the area is |
comparitively undisturbed |
737a 1-0cm
101
surface stones and gravel
102
weakly developed pavement of subrounded scoria small pebbles and granules,
737b 0-10cm
201
very dark grey (10YR 3/1) gravelly sand
202
moist
203
cohesive
204
rock particles subangular and unweathered
205
distinct boundary,
737c 10-15cm
301
very dark grey (10YR 3/1) sandy gravel
302
moist
303
loose
304
sharp boundary, on ice-cemented ground
Yes (IGNS)
Ice-cemented
15
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 |
73700001
737a
1-0cm
-1
0
none
73700002
737b
0-10cm
0
10
none
73700003
737c
10-15cm
10
15
none
73700001
65.00
7.20
73700002
67.00
7.30
73700003
78.00
3.90
73700001
8.60
0.11
73700002
8.90
0.05
73700003
8.90
0.05
73700001
73700002
73700003
12-Dec-2005
Page 695 of 896
737