Ross Sea Region Soil Sites
661000
661
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
661a 1-0cm
101
surface sandy granular pebble gravel
102
some surface salt precipitations
103
rock particles mainly subrounded,
661b 0-4cm
201
light brownish grey (10YR 6/2) sandy gravel
202
weakly cohesive
203
wet
204
a few carbonate coatings
205
rock particles subrounded
206
sharp boundary,
661c 4-11cm
301
light brownish grey to light yellowish brown (2.5Y 6/2 - 6/4) sandy to silty gravel
302
moderately cohesive
303
wet
304
rock particles subrounded
305
distinct boundary,
661d 11-19cm
401
light brownish grey to light yellowish brown (2.5Y 6/2 - 6/4) sandy to silty pebble gravel
402
moderately cohesive
403
wet
404
sharp boundary,
661e 19-23cm
501
greyish brown (10YR 5/2) sandy gravel
502
very firm
503
hard frozen
504
rock particles mainly subangular
505
indistinct boundary,
661f 23-38cm
601
drill core
602
grey (10YR 5/1) sandy gravel
603
rock particles angular,
661g 38-49cm
701
drill core
702
grey (10YR 5/1) sandy gravel
703
rock particles angular,
661h 49-65cm
801
drill core
802
rock
Yes
a,b,c,d,e,f,g,h
Hard ice-cemented
19
1
(19cm)
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 .75m below the application plot |
Soluble Salt |
Concentration |
66100002
63.00
29.11
66100003
58.00
9.82
66100004
41.00
8.04
66100005
45.00
14.27
66100001
51.00
10.65
66100006
38.00
14.57
66100007
39.00
18.85
66100008
53.00
21.34
66100002
66100003
66100004
66100005
66100001
66100006
66100007
66100008
66100002
66100003
66100004
66100005
66100001
66100006
66100007
66100008
12-Dec-2005
Page 619 of 896
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