Ross Sea Region Soil Sites
650000
650
9-Dec-1991
IBC, GGC
Pram Point, Scott Base, Ross Island
Leaching experiment using lithium chloride tracer to determine rate of leaching
Dept of Interior USGS 1986 1:250,000, Ross Island & Vicinity
CS Lscp
No
166.7330
-77.8333
77deg 50.0'S
-166deg -44.0'E
cf. Notes for DESCR below
2
E
60
cf. Notes for GEOLAND below
Oceanic subxerous; a dry site with little snow accumulation or water activity
-18
Coastal Antarctic
Bouldery till and slope detritus with minor accessions of sedimentary and granitic rocks
Some local yellow lichen and small moss occurrences
Weakly developed small nets with distinct borders
SURFACE WEATHERING or |
SURFACE FEATURES |
Carbonate coatings on undersides of surface clasts; some thin patchy salt precipitations
Probably minor treading
650a 3-0cm
101
surface scoria gravel
102
subangular to subrounded
103
some diffuse salt precipitations
104
abundant carbonate coatings,
650b 0-6cm
201
greyish brown (2.5Y 5/2) sandy pebble cobble gravel
202
loose
203
rock particles angular to subrounded
204
sharp boundary,
650c 6-20cm
301
light brownish grey (2.5Y 6/2) granular gravel
302
weakly cohesive
303
moist
304
indistinct boundary,
650d 20-30cm
401
light brownish grey (2.5Y 6/2) granular gravel
402
weakly cohesive
403
partly frozen
404
sharp boundary,
650e 30-35cm
501
light brownish grey (2.5Y 6/2) sandy to silty gravel
502
very hard
503
frozen,
650f 31-49cm
601
drill core
602
grey (10YR 5/1) scoria
603
rock,
650g 49-53cm
701
drill core
702
grey (10YR 5/1) scoria
703
rock,
650h 53-73cm
801
drill core
802
grey (10YR 5/1) scoria gravel,
650i 73-82cm
901
drill core
902
grey (10YR 5/1) scoria
903
rock
Yes
a,b,c,d,e,f,g,h,i
Hard ice-cemented
30
1
Descr
Approximately 350m northwest of the western end of Scott Base on a gently sloping step on a minor ridge, about 50m north of the Scott Base to McMurdo |
Station walking track; a generally bouldery surface; at this site, 4 contiguous 1m X 1m plots were set out and 3 irrigated with LiCl, the 4th (southernmost) with |
H2O; this was the second plot resampling series; the site is 3m from the edge of the application plot |
Geoland
Rocks are predominantly scoria flows of the McMurdo Volcanics; Last Glaciation Ross 1 ice covered the site and traces of rocks (sandstone and granite granules |
and small pebbles) probably from the Royal Society Range can be found; the drift mantle is thin and patchy with bedrock a little below the surface |
Soluble Salt |
Concentration |
65000001
26.00
2.17
65000002
56.00
2.82
65000003
66.00
9.33
65000004
44.00
4.42
65000005
48.00
43.94
65000006
46.00
88.83
65000007
12.00
256.20
65000008
14.00
40.32
65000009
24.00
37.61
65000001
65000002
65000003
65000004
65000005
65000006
65000007
65000008
65000009
65000001
65000002
65000003
65000004
65000005
65000006
65000007
65000008
65000009
12-Dec-2005
Page 608 of 896
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