Ross Sea Region Soil Sites
842000
842
11-Jan-1998
IBC DSS WM
North side of Lake Vanda in Wright Valley, near the eastern end on a sloping fan surface
LiCl leaching trial site sampling
Not recorded
P & LScp CS
GPS
161.6800
-77.5197
77deg 31.18'S
-161deg -40.80'E
cf. Notes for DESCR below
8
S
200
cf. Notes for GEOLAND below
(8o)
Minimal moisture from snowfall with very low soil moisture contents
-20
Xerous to subxerous, dry valley floor zone
Moderately sorted sandy fan gravels
Nil observed
Weakly developed large polygons
SURFACE WEATHERING or |
SURFACE FEATURES |
Undisturbed surfaces with a well developed small pebble pavement with some clasts showing some ventifaction;
Site previously disturbed from sampling activities for LiCl leaching trial and a treading trial; probably subject to other random treading disturbances
842a 1-0cm
101
surface pavement
102
subrounded to rounded pebbles with occasional cobbles and abundant granules and coarse sand
103
some clasts weakly to moderately ventiform,
842b 0-5cm
201
pale yellow (2.5Y 7/4 - 5Y 7/3) gravelly sand
202
loose
203
few fine salt flecks adhering to rock particles
204
rock particles subrounded to angular and unstained,
842c 5-10cm
301
pale yellow (2.5Y 7/4 - 5Y 7/3) gravelly sand
302
loose
303
a few fine salt flecks adhering to rock particles
304
rock particles subrounded to angular and unstained,
842d 10-20cm
401
pale yellow (2.5Y 7/4 - 5Y 7/3) gravelly sand
402
loose
403
a few fine salt flecks adhering to rock particles
404
rock particles subrounded to angular and unstained,
842e 20-30cm
501
pale yellow (2.5Y 7/4 - 5Y 7/3) gravelly sand
502
loose
503
rock particles subrounded to angular and unstained,
842f 30-40cm
601
pale yellow (2.5Y 7/4 - 5Y 7/3) gravelly sand
602
loose
603
rock particles subrounded to angular and unstained,
Yes
dry frozen, some weak ice cementing at a few sites
35
1
(Permafrost ~35cm, from 2yrs temp monitoring)
Geoland
The site lies within the zone of lake benches formed by former rises in the level of Lake Vanda. The deposits are probably lake sediments that have been |
subsequently reworked by somewhat mild fan depositional processes from periodic stream flows from adjacent mountain slopes. The deposits have a dominantly |
sandy texture and are generally weakly to non stratified |
Descr
The site lies within the zone of lake benches formed by former rises in the level of Lake Vanda. water flows; the slope is about 4o to the south and there is some |
minor broad polygonal patterns indicating some ice cemented ground; the site is about half way up the fan. For the experiment, in January 1994, two series of |
plots were established, about 20 m apart, with 3 adjacent 1 metere square plots being irrigated with a LiCl solution and 1 plot being irrigated with H2O as a |
control. After an initial sampling, subsequent samplings were made in January 1995, in December 1995 and in January 1998. Samplings were made from the |
irrigated plot and at 1 m intervals to 3 m down slope, from above the irrigated plot and from the H2O control plot. This sample is from the application plot. |
Soluble Salt |
Concentration |
84200001
89.80
0.50
84200002
76.70
0.56
84200003
54.00
0.65
84200004
71.00
0.80
84200005
74.20
0.82
84200001
84200002
84200003
84200004
84200005
84200001
84200002
84200003
84200004
84200005
12-Dec-2005
Page 820 of 896
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