Ross Sea Region Soil Sites
791000
791
7-Jan-1995
IBC, GGC
Wright Valley, near Lake Vanda
Lithium chloride leaching experiment
not recorded
CS, Pro & Lscp
No
161.6800
-77.5197
77deg 31.2'S
-161deg -40.8'E
cf. Notes for DESCR below
8
S
200
cf. Notes for GEOLAND below
| Xerous; no readily available source of water; there may be occasional flows from associated |
| fan surfaces with possibly some subsurface moisture flows |
-23
Central Mountain
Fine gravelly sand from fan sediments with lake edge reworking
None observed
A broad weakly developed rectangular net pattern with shallow troughs predominantly sand filled
| SURFACE WEATHERING or |
| SURFACE FEATURES |
| The surface has a weakly developed pebble pavement with occasional cobble clasts; there is little surface staining; larger clasts show some abrasion and |
| moderate ventifaction |
Not previously disturbed apart from some occasional foot trafficking and disturbance associated with establishing the experiment
791 1-0cm
101
surface pavement
102
subrounded to rounded pebbles with few cobbles and abundant granules
103
unstained
104
clasts weakly to moderately ventiform,
791a 0-5cm
201
pale yellow (2.5Y 7/4) gravelly sand
202
loose
203
rock particles rounded to subrounded and unstained,
791b 5-10cm
301
pale yellow (2.5Y 7/4) gravelly sand
302
loose
303
rock particles rounded to subrounded and unstained,
791c 10-20cm
401
pale yellow (2.5Y 7/4) gravelly sand
402
loose
403
rock particles rounded to subrounded and unstained,
791d 20-30cm
501
pale yellow (2.5Y 7/4) gravelly sand
502
loose
503
rock particles rounded to subrounded and unstained,
791e 30-40cm
601
pale yellow (2.5Y 7/4) gravelly sand
602
loose
603
rock particles rounded to subrounded and unstained.
Yes
dry frozen
0
1
(ND)
Descr
| On the north side of Lake Vanda, opposite and north of the old Vanda Station site on a broad even sloping lake bench/fan surface about 200 m from the lake |
| edge; two sites were established across the slope and about 20 m apart; the sites are adjacent 1 metre square plots onto which LiCl (3 plots) and H2O (1 plot) |
| were irrigated; the 1995 sampling was from plot 1 and from soils up slope and down slope of the application site; soil 791 was from the eastern replicate series |
| and 1m below the plot at the western end |
Geoland
| The site lies within the zone of lake benches formed by former rises in the level of Lake Vanda and the deposits are probably lake sediments that have been |
| resorted from fan gravels and older glacial till deposits; reworking of the sediments takes place primarily by gentle wave action during periods when there has |
| been seasonal thawing of the lake margin; periodic low energy flows from nearby fans may have contributed some sediment |
| Soluble Salt |
| Concentration |
79100001
791
1-0cm
-1
0
none
79100002
791a
0-5cm
0
5
1.71
69.82
0.24
none
79100003
791b
5-10cm
5
10
1.64
82.31
0.42
none
79100004
791c
10-20cm
10
20
1.67
63.58
0.49
none
79100005
791d
20-30cm
20
30
1.71
73.77
0.44
none
79100006
791e
30-40cm
30
40
1.66
75.55
0.43
none
79100001
69.80
0.24
79100002
82.30
0.42
79100003
63.60
0.49
79100004
73.80
0.44
79100005
75.60
0.43
79100001
79100002
79100003
79100004
79100005
79100001
79100002
79100003
79100004
79100005
12-Dec-2005
Page 768 of 896
791