Ross Sea Region Soil Sites
690000
690
27-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 at a more remote |
site near Vanda Station to provide an assessment of the properties of an uncontaminated soil |
not recorded
No
161.6690
-77.5287
77deg 31.7'S
-161deg -40.1'E
approximately 46m west of the wind sock at the south end of a narrow elongated gully, on the sloping floor of the gully
4
NE
95
cf. Notes for GEOLAND below
(3.5o)
xerous; the soil surface is occasionally moistened by summer snowfall;
-20
central mountain
sandy pebble gravel over disaggregated granodiorite bedrock
SURFACE WEATHERING or |
SURFACE FEATURES |
a pebble pavement of subangular to subrounded clasts
probably only light foot trafficking
690a 0-9cm
101
pale brown (10YR 6/3) sandy pebble gravel
102
loose
103
rock particles subangular to subrounded
104
sharp boundary,
690b 9-32cm
201
pale brown (10YR 6/3) pebbly to cobbly gravel formed from in situ disaggregated granodiorite
202
loose
203
rock particles angular and unstained
204
distinct boundary,
690c 32-48cm
301
pale brown (10YR 6/3) sand in fissures formed in fractured but otherwise massive granodiorite bedrock.
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; 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; crumbled granodiorite bedrock |
occurs at this site |
Soluble Salt |
Concentration |
69000001
690a
0-9cm
0
9
none
69000002
690b
9-32cm
9
32
none
69000003
690c
32-48cm
32
48
none
69000001
72.00
0.20
69000002
31.00
1.00
69000003
26.00
0.60
69000001
7.90
0.22
0.57
0.23
0.13
0.07
0.17
0.63
0.02
69000002
7.70
1.05
1.00
2.27
1.20
0.21
3.20
0.33
0.29
69000003
8.10
0.44
0.52
1.02
0.41
0.10
1.10
0.68
0.09
69000001
69000002
69000003
12-Dec-2005
Page 648 of 896
690