Ross Sea Region Soil Sites
706000
706
2-Jan-1993
IBC, GGC
Vanda Station, Wright Valley at the eastern end of Lake Vanda
soil moisture investigation of lake edge wetting front
not recorded
No
166.7500
-75.8333
75deg 50.0'S
-166deg -45.0'E
| 80 m southwest of the Vanda Station Mess building on the small island on which the two disused helo pads are located, 6.9m from the lake edge; this site is the uppermost of 4 |
| sites across the lake edge wetting fringe |
7
SE
92
cf. Notes for GEOLAND below
(7o)
| xerous; the soil surface is occasionally moistened by summer snowfalls; the site is just above |
| the moistened capillary fringe zone |
-20
coastal mountain
fractured, mainly lamprophyre dyke rock forming a sandy gravel mantle
| SURFACE WEATHERING or |
| SURFACE FEATURES |
surface clasts are mainly angular and unstained
a relatively undisturbed site apart from treking
706a 0-10cm
101
light grey to pale yellow (2.5Y 7/2-7/4) pebbly sandy gravel
102
loose
103
rock particles angular and unstained
104
indistinct boundary,
706b 10-20cm
201
light grey to pale yellow (2.5Y 7/2-7/4) pebbly gravelly sand
202
loose
203
rock particles angular and unstained
204
indistinct boundary,
706c 20-30cm
301
light grey to pale yellow (2.5Y 7/2-7/4) pebbly sandy gravel
302
loose
303
rock particles angular and unstained
304
indistinct boundary,
706d 30-40cm
401
light grey (2.5Y 7/2) pebbly sandy gravel
402
loose
403
rock particles angular and unstained
404
indistinct boundary,
706e 40-50cm
501
light grey (2.5Y 7/2) pebbly gravel
502
loose rock particles angular and unstained
503
indistinct boundary, on fragmented bedrock.
yes
a,b,c,d,e
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 |
70600001
706a
0-10cm
0
10
0.10
none
70600002
706b
10-20cm
10
20
0.20
none
70600003
706c
20-30cm
20
30
0.20
none
70600004
706d
30-40cm
30
40
0.20
none
70600005
706e
40-50cm
40
50
0.20
none
70600001
52.00
10.90
44.00
36.20
4.00
1.60
1.60
1.50
0.10
70600002
61.00
13.80
47.90
29.20
2.80
1.10
2.70
2.50
0.20
70600003
45.00
13.50
47.40
30.00
2.80
1.10
2.70
2.50
0.20
70600004
46.00
12.10
49.00
29.50
3.30
1.40
2.10
2.50
0.20
70600005
22.00
18.70
42.60
24.90
3.90
2.80
3.60
3.40
0.20
70600001
8.80
0.30
0.16
1.20
0.40
0.07
0.90
0.80
0.04
70600002
8.70
0.31
0.10
1.00
0.10
0.04
1.10
0.20
0.00
70600003
8.70
0.34
0.06
1.20
0.10
0.03
1.40
0.05
70600004
9.10
0.13
0.03
0.90
0.10
0.02
0.60
0.40
70600005
9.10
0.15
0.03
1.10
0.10
0.03
0.60
0.70
70600001
70600002
70600003
70600004
70600005
12-Dec-2005
Page 664 of 896
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