Ross Sea Region Soil Sites
594000
594
1-Feb-1990
IBC, GGGC, MRB
Pram Point, Scott Base, Ross Island
Soil moisture and permafrost investigations
Dept of Interior US Geological Survey 1986
CS Pro & Lscp
Yes
166.7500
-77.8483
77deg 50.90'S
-166deg -45.00'E
cf. Notes for DESCR below
7
SE
75
cf. Notes for GEOLAND below
Xerous to subxerous; a dry site
-18
Coastal Antarctic
Cobbly to bouldery till and slope debris predominantly from scoria with minor accessions of sedimentary and granitic rocks
Nil
Weakly developed with some flow features; extensive redevelopment of patterned ground on nearby ground scraped surfaces
SURFACE WEATHERING or |
SURFACE FEATURES |
Some dark scoria clasts have a weak polish; calcium carbonate coatings beneath some clasts
Probably light treading disturbance; nearby, extensive ground scraping
594a 0-4cm
101
greyish brown (2.5Y 5/2) pebbly gravelly sand
102
loose
103
rock particles subangular
104
calcium carbonate coatings beneath some surface clasts
105
distinct boundary,
594b 4-12cm
201
greyish brown (2.5Y 5/2) pebbly sandy gravel
202
weakly cohesive
203
moist
204
rock particles subangular
205
indistinct boundary,
594c 12-20cm
301
greyish brown (2.5Y 5/2) pebbly sandy gravel
302
moderately cohesive
303
moist
304
rock particles subangular
305
indistinct boundary,
594d 20-30cm
401
greyish brown (2.5Y 5/2) pebbly to cobbly sandy gravel
402
moderately cohesive
403
moist
404
sharp boundary, drill core in ice-cemented ground
594e 30-40cm
501
[ greyish brown (2.5Y 5/2) sandy gravel,
594f 40-50cm
601
[ greyish brown (2.5Y 5/2) sandy gravel and scoria rock,
594g 50-63cm
701
[ greyish brown (2.5Y 5/2) sandy gravel and scoria rock,
594h 63-75cm
801
[ greyish brown (2.5Y 5/2) sandy gravel and scoria rock
Yes
a,b,c,d,e,f,g,h
Hard ice-cemented
30
1
(30cm)
Descr
Between Scott Base and Crater Hill, almost in a direct line, on the crest of a broad ridge adjacent to a shallow gully from which the snow cover has largely |
retreated, the site is on a stable surface about 50m southwest of the snowbank in the gully; the first of three sites looking at moisture differences around snow |
accumulations and beyond |
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 |
59400001
594a
0-4cm
0
4
53.00
1.40
none
59400002
594b
4-12cm
4
12
44.00
5.30
none
59400003
594c
12-20cm
12
20
37.00
4.20
none
59400004
594d
20-30cm
20
30
41.00
4.40
none
59400005
594e
30-40cm
30
40
58.00
35.40
none
59400006
594f
40-50cm
40
50
47.00
52.80
none
59400007
594g
50-63cm
50
63
53.00
23.80
none
59400008
594h
63-75cm
63
75
64.00
4.20
none
59400001
51.70
59400002
42.00
59400003
48.00
59400004
41.20
59400005
57.60
59400006
46.70
59400007
53.30
59400008
63.90
59400001
59400002
59400003
59400004
59400005
59400006
59400007
59400008
59400001
59400002
59400003
59400004
59400005
59400006
59400007
59400008
12-Dec-2005
Page 552 of 896
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