Ross Sea Region Soil Sites
701000
701
30-Dec-1993
IBC, GGC
Vanda Station, Wright Valley at the eastern end of Lake Vanda
assessment of environmental impacts from past human activities at Vanda Station; this site was sampled at a |
Helo pad to determine soil contamination from Helo activities |
not recorded
CS Pro
No
161.6640
-77.5305
77deg 31.8'S
-161deg -39.8'E
main helo pad approximately 160m south-southwest of Vanda Station buildings; on the vehicle track to the south of the station; a broad flattish ridge surface
0
95
cf. Notes for GEOLAND below
xerous; the soil surface is occasionally moistened by summer snowfalls
-20
coastal mountain
shallow fragmented granodiorite
SURFACE WEATHERING or |
SURFACE FEATURES |
fractured flaggy bedrock at the surface in places
a frequently used helicopter landing site
701a 0-4cm
101
light olive brown (2.5Y 5/4) bouldery pebble and cobble gravel with the sand fraction <20%
102
moderately cohesive
103
fuel stained
104
surface boulders with orange paint
105
indistinct boundary,
701b 4-14cm
201
light olive brown (2.5Y 5/4) bouldery pebble and cobble gravel with the sand fraction <15%
202
weakly cohesive
203
moderately fuel stained
204
sharp boundary, on smooth bedrock.
yes
a,b,d
dry frozen
35
1
(~35)
Geoland
the rocks of the area are granodiorites that have been cut with lamprophyre dykes and form a strongly undulating ridge and gully topography as a result of ice |
over riding from down-valley and up-valley glaciations and to a lesser extent, subaerial weathering; subsequent to glaciation, the terrain has been subjected to |
drowning and emergence from fluctuating lake levels from Lake Vanda with some sorting or resorting of surficial materials |
Soluble Salt |
Concentration |
70100001
701a
0-4cm
0
4
none
70100002
701b
4-14cm
4
14
none
70100001
33.00
0.20
70100002
62.00
0.30
70100001
7.80
0.30
0.45
0.53
0.17
0.06
0.41
0.48
0.05
70100002
7.80
0.36
0.44
0.73
0.23
0.06
0.37
0.68
0.05
70100001
70100002
12-Dec-2005
Page 659 of 896
701