Ross Sea Region Soil Sites
656000
656
12-Dec-1991
IBC, GGC, MRB
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, Antarctica
CS Lscp
No
166.7330
-77.8333
77deg 50.0'S
-166deg -44.0'E
cf. Notes for DESCR below
3
E
55
cf. Notes for GEOLAND below
Oceanic subxerous; a dry site with only occasional soil moistening
-18
Coastal Antarctic
Bouldery till and slope detritus with minor accessions of sedimentary and granitic rocks
Nil at site; some yellow lichen and moss in the vicinity
Weakly developed small nets
SURFACE WEATHERING or |
SURFACE FEATURES |
Carbonate coatings on undersides of surface clasts; some thin patchy salt precipitations
Probably some occasional treading
656a 2-0cm
101
surface scoria gravel
102
subangular to subrounded
103
some diffuse salt precipitations beneath stones
104
abundant carbonate coatings,
656b 0-4cm
201
light brownish grey (2.5Y 6/2) cobbly granular gravel
202
loose
203
rock particles subrounded to subangular
204
distinct boundary,
656c 4-18cm
301
light brownish grey (2.5Y 6/2) cobbly sandy gravel
302
weakly cohesive
303
slightly moist
304
rock particles subrounded to subangular
305
distinct boundary,
656d 18-26cm
401
light brownish grey (2.5Y 6/2) cobbly sandy gravel
402
moderately cohesive
403
moist
404
rock particles subrounded to subangular
405
sharp boundary,
656e 26-32cm
501
light brownish grey to light yellowish brown (2.5Y 6/2 - 6/4) sandy to silty gravel
502
firmly frozen
503
rock particles subrounded to subangular,
656f 32-42cm
601
drill core
602
grey (10YR 5/1) scoria gravel,
656g 42-53cm
701
drill core
702
grey (10YR 5/1) scoria gravel,
656h 53-73cm
801
drill core
802
grey (10YR 5/1) scoria gravel,
656i 73-88cm
901
drill core
902
grey (10YR 5/1) scoria gravel
903
includes rock
Yes
a,b,c,d,e,f,g,h,i
Hard ice-cemented
26
1
(26cm)
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 1m (downslope) 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 |
65600001
21.00
0.43
65600002
45.00
1.42
65600003
62.00
4.21
65600004
45.00
3.56
65600005
43.00
9.21
65600006
40.00
14.04
65600007
28.00
13.50
65600008
37.00
18.44
65600009
77.00
16.79
65600001
65600002
65600003
65600004
65600005
65600006
65600007
65600008
65600009
65600001
65600002
65600003
65600004
65600005
65600006
65600007
65600008
65600009
12-Dec-2005
Page 614 of 896
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