Ross Sea Region Soil Sites
788000
788
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
788 1-0cm
101
surface pavement
102
subrounded to rounded pebbles with few cobbles and abundant granules
103
unstained
104
clasts weakly to moderately ventiform,
788a 0-5cm
201
pale yellow (2.5Y 7/4) gravelly sand
202
loose
203
rock particles rounded to subrounded and unstained,
788b 5-10cm
301
pale yellow (2.5Y 7/4) gravelly sand
302
loose
303
rock particles rounded to subrounded and unstained,
788c 10-20cm
401
pale yellow (2.5Y 7/4) gravelly sand
402
loose
403
rock particles rounded to subrounded and unstained,
788d 20-30cm
501
pale yellow (2.5Y 7/4) gravelly sand
502
loose
503
rock particles rounded to subrounded and unstained,
788e 30-40cm
601
pale yellow (2.5Y 7/4) gravelly sand
602
loose
603
rock particles rounded to subrounded and unstained.
Yes
a,b,c,d,e
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 788 was sampled from the control plot |
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 |
78800001
788
1-0cm
-1
0
none
78800002
788a
0-5cm
0
5
65.91
0.23
none
78800003
788b
5-10cm
5
10
77.04
0.47
none
78800004
788c
10-20cm
10
20
86.03
0.71
none
78800005
788d
20-30cm
20
30
84.03
1.70
none
78800006
788e
30-40cm
30
40
88.50
0.44
none
78800001
65.90
0.23
78800002
77.00
0.47
78800003
86.00
0.71
78800004
84.00
0.70
78800005
88.50
0.44
78800001
78800002
78800003
78800004
78800005
78800001
78800002
78800003
78800004
78800005
12-Dec-2005
Page 765 of 896
788