Ross Sea Region Soil Sites
659000
659
13-Dec-1991
IBC, GGC, MRB
Pram Point, Scott Base, Ross Island
Leaching experiment using lithium chloride tracer to determine rate of leaching; a wet site compared with a |
dry site |
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
50
cf. Notes for GEOLAND below
Oceanic subxerous; a wet site; surface water from recent snow thaw
-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 frost heave polygons
SURFACE WEATHERING or |
SURFACE FEATURES |
Scattered basaltic boulders; unweathered
Probably some occasional treading
659a 0-4cm
101
light brownish grey (2.5Y 6/2) sandy gravel
102
moderately cohesive
103
very moist
104
weakly developed vesicular structure
105
rock particles subangular to subrounded
106
indistinct boundary,
659b 4-11cm
201
light brownish grey to light yellowish brown (2.5Y 6/2 - 6/4) sandy to silty gravel
202
moist
203
weakly cohesive
204
weakly developed vesicular structure
205
indistinct boundary,
659c 11-20cm
301
light brownish grey to light yellowish brown (2.5Y 6/2 - 6/4) sandy pebbly gravel
302
wet
303
rock particles subangular
304
sharp boundary,
659d 20-32cm
401
drill core
402
greyish brown (10YR 5/2) scoria gravel,
659e 32-40cm
501
drill core
502
grey (10YR 5/1) scoria gravel,
659f 40-45cm
601
drill core
602
rock,
659g 45-60cm
701
drill core
702
rock
Yes
a,b,c,d,e,f,g
Hard ice-cemented
20
1
(20cm)
Descr
Approximately 350m northwest of the western end of Scott Base in the floor of a shallow gully; 20m NW of site 657 and approximately 3-4m lower in altitude; |
about 50m N of the Scott base to McMurdo Station walking track; at this site, 4 contiguous 1m X 1m plots were set out and 3 irrigated with LiCl, the 4th |
(northernmost) with H2O; this was the second plot resampling series; the site is 2.7m below 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 |
65900001
66.00
11.68
65900002
69.00
9.94
65900003
35.00
16.60
65900004
39.00
18.19
65900005
32.00
7.44
65900006
8.00
4.16
65900007
19.00
4.15
65900001
65900002
65900003
65900004
65900005
65900006
65900007
65900001
65900002
65900003
65900004
65900005
65900006
65900007
12-Dec-2005
Page 617 of 896
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