Ross Sea Region Soil Sites
684000
684
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 |
fuel contamination in the soils at a fuel storage site |
not recorded
No
161.6690
-77.5273
77deg 31.6'S
-161deg -40.1'E
26m east southeast of the Vanda Station Mess building alongside a fuel drum storage site on a gently sloping surface
5
S
94
cf. Notes for GEOLAND below
(5o)
xerous; the soil surface is occasionally moistened by summer snowfall
-20
central mountain
a thin veneer of fragmental granodiorite over fractured bedrock
SURFACE WEATHERING or |
SURFACE FEATURES |
surface materials are mainly angular and unstained and are formed from fragmentation of the underlying bedrock
the surface has been heavily disturbed by base activities; contamination from fuel spillages has occurred as a result of lateral seepages
684a 0-4cm
101
pale olive (5Y 6/3) sandy cobble gravel
102
loose
103
distinct boundary,
684b 4-19cm
201
brown (10YR 5/3 fuel stained) sandy boulder gravel
202
weakly cohesive
203
distinct boundary,
684c 19-25cm
301
pale brown (10YR 6/3) weakly cohesive sand infilling fractured bedrock fissures
302
boulders tabular, angular and unstained.
yes
a,b,c,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; at this site, the rock is fractured granodiorite; 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 |
68400001
684a
0-4cm
0
4
none
68400002
684b
4-19cm
4
19
none
68400003
684c
19-25cm
19
25
none
68400001
75.00
0.60
68400002
86.00
0.60
68400001
7.60
0.35
0.56
0.65
0.26
0.10
0.69
0.59
0.09
68400002
7.60
0.34
0.31
0.65
0.30
0.11
1.00
0.16
0.08
68400001
68400002
12-Dec-2005
Page 642 of 896
684