Ross Sea Region Soil Sites
679000
679
24-Dec-1992
IBC, GGC
Vanda Station, Wright Valley at the eastern end of Lake Vanda
| assessment of environmental impacts from past human activities at Vanda Station; sampled for indications of |
| contaminations from greywater and urine disposal |
not recorded
CS Pro
No
166.7500
-75.8333
75deg 50.0'S
-166deg -45.0'E
on a slope just northwest of the Vanda Station buildings; 6.5m from the main building and 6m from the generator building
16
NW
95
cf. Notes for GEOLAND below
(16o)
| xerous; the soil surface is occasionally moistened by summer snowfall; a site for previous |
| disposal of fluids |
-20
central mountain
fractured, flaggy and in situ, granodiorite with accumulations of granular sand in the cracks between the angular, fragmented boulder sized clasts
| SURFACE WEATHERING or |
| SURFACE FEATURES |
surface materials are angular and unstained; much surface loose and probably recent wind-blown sand
the surface has been heavily disturbed by base activities and was a disposal site for greywaters and urine
3-0cm
101
surface pebbles and very loose recent wind blown sand
102
rock particles angular and unstained,
679a 0-3cm
201
brown (10YR 5/3) sandy cobble gravel
202
cohesive with a distinct crust formed by accessions of organic materials
203
many foreign particles
204
strong odour
205
rock particles angular and unweathered
206
distinct boundary,
679b 3-13cm
301
light yellowish brown (2.5Y 6/4) bouldery sand
302
loose
303
rock is disaggregated and slightly crumbly granodiorite with the sand fraction filling the fissures
304
indistinct boundary,
679c 13-25cm
401
light yellowish brown (2.5Y 6/4) sand as infilling (<15%) between fractured bedrock clasts
402
boulders are angular and unweathered but with some surface exfoliation
403
sharp boundary, on smooth granodiorite bedrock.
yes
a,b,c,d,e
dry frozen
35
1
(~35cm)
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; at this site, the rock is fractured granodiorite; subsequent to |
| glaciation, the terrain has been subjected to drowning and emergence from fluctuating water levels from Lake Vanda with some sorting or resorting of surficial |
| materials |
| Soluble Salt |
| Concentration |
67900001
679
3-0cm
-3
0
none
67900002
679a
0-3cm
0
3
none
67900003
679b
3-13cm
3
13
none
67900001
70.00
0.70
67900002
42.00
0.30
67900003
56.00
0.50
67900004
66.00
0.50
67900005
79.00
0.70
67900001
7.10
1.30
3.50
0.32
0.27
0.76
2.25
0.27
0.00
67900002
8.10
0.30
0.78
0.17
0.07
0.17
0.32
0.33
0.00
67900003
8.10
0.40
0.97
0.15
0.11
0.21
0.83
0.23
0.01
67900004
8.20
0.47
0.39
0.18
0.47
0.17
0.92
0.26
0.01
67900005
6.10
0.65
1.79
0.60
0.24
0.10
0.03
0.02
0.01
67900001
67900002
67900003
67900004
67900005
12-Dec-2005
Page 637 of 896
679
