Ross Sea Region Soil Sites
658000
658
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
658a 0-4cm
101
light brownish grey (2.5Y 6/2) sandy to silty gravel
102
weakly cohesive
103
very moist
104
rock particles subangular to subrounded
105
indistinct boundary,
658b 4-15cm
201
pale olive (5Y 6/3) sandy to silty gravel
202
weakly cohesive
203
very moist
204
rock particles subrounded
205
indistinct boundary,
658c 15-20cm
301
pale olive (5Y 6/3) sandy to silty gravel
302
weakly cohesive
303
wet
304
rock particles subrounded, on hard ice-cemented ground
Yes
a,b,c
Hard ice-cemented
20
1
(20cm)
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 |
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 5m below the application plot |
Soluble Salt |
Concentration |
65800001
50.00
13.71
65800002
65.00
11.27
65800003
53.00
14.45
65800001
65800002
65800003
65800001
65800002
65800003
12-Dec-2005
Page 616 of 896
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