Ross Sea Region Soil Sites
754000
754
12-Jan-1994
IBC, GGC, DSS
Vanda Station, Wright Valley
Soil contamination studies Vanda Station from a series of sites spaced 1m apart; to determine if |
contaminants are being redistributed through the soils as a result of capillary movement and evaporation of |
moisture |
not recorded
Pro CS & Lscp
No
161.6730
-77.5217
77deg 31.3'S
-161deg -40.4'E
VT1 8; greywater gully, 45 m to the south east of Vanda Station buildings and at the northeastern end of the gully; the site is on the lower slope of the gully side 2m above the |
edge of the visible surface wetting front, and 7m south east from VT1 1 |
6
NW
93
cf. Notes for GEOLAND below
(6o)
Xerous; the soil is dry
-20
Central Mountain
Shallow granular sand over granodiorite bedrock
None observed
Nil
SURFACE WEATHERING or |
SURFACE FEATURES |
A loose granular to small pebble unweathered pavement
Disturbance from previous activities at Vanda Station includes trampling and some accumulation of foreign materials
754a 0-10cm
101
light yellowish brown (2.5Y 6/4) gravelly granular sand
102
loose
103
some accumulations of dried algae
104
indistinct boundary,
754b 10-20cm
201
light yellowish brown (2.5Y 6/4) sandy granule gravel
202
loose
203
abundant dried algae
204
sharp boundary, on granodiorite bedrock
Yes (IGNS)
0
1
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, of subaerial weathering; subsequent to glaciation, the terrain has been subjected to |
submergence and emergence from fluctuating lake water levels from Lake Vanda with some associated sorting and resorting of surface materials; bedrock is at |
shallow depth on the gully floor |
Soluble Salt |
Concentration |
75400001
754a
0-10cm
0
10
none
75400002
754b
10-20cm
10
20
none
75400001
75400002
75400001
0.65
2.03
0.46
0.10
1.16
1.30
0.00
75400002
0.77
1.36
0.53
0.10
1.64
0.82
0.08
75400001
75400002
12-Dec-2005
Page 716 of 896
754