Ross Sea Region Soil Sites
657000
657
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
657a 1-0cm
101
surface pebbly gravel
102
subrounded to subangular
103
some diffuse salt precipitations at the surface
104
many carbonate coatings,
657b 0-6cm
201
light brownish grey 2.5Y 6/2) sandy pebble and cobble gravel
202
loose
203
rock particles subrounded to angular
204
some carbonate coatings
205
distinct boundary,
657c 6-20cm
301
olive grey (5Y 5/2) sandy gravel
302
weakly cohesive
303
moist
304
rock particles dominantly subrounded
305
a few carbonate coatings
306
indistinct boundary,
657d 20-27cm
401
olive grey (5Y 5/2) sandy gravel
402
weakly cohesive
403
moist
404
rock particles subangular to subrounded
405
sharp boundary,
657e 27-35cm
501
drill core
502
light brownish grey to light yellowish brown (2.5Y 6/2 - 6/4) sandy to silty gravel,
657f 35-40cm
601
drill core
602
grey (10YR 5/1) scoria gravel,
657g 40-67cm
701
drill core
702
grey (10YR 5/1) scoria gravel,
657h 67-80cm
801
drill core
802
grey (10YR 5/1) scoria gravel
Yes
a,b,c,d,e,f,g,h
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 at 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 |
65700001
20.00
0.57
65700002
54.00
1.94
65700003
62.00
4.74
65700004
35.00
3.35
65700005
50.00
8.12
65700006
31.00
129.96
65700007
14.00
12.70
65700008
43.00
36.14
65700001
65700002
65700003
65700004
65700005
65700006
65700007
65700008
65700001
65700002
65700003
65700004
65700005
65700006
65700007
65700008
12-Dec-2005
Page 615 of 896
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