Ross Sea Region Soil Sites
256000
256
19-Dec-1969
IBC, GGC
Scott Glacier region, southern Trans-antarctic Mountains, at the junction of the Albanus and Scott Glacier at Mt Zanuck
Soil weathering examination
US Geological Survey 1:250 000 1968, Mount Goodale
B&W Lscp
No
-150.7670
-85.9333
85deg 56.0'S
150deg 46.0'E
On the north side of Mt Zanuck in a basin surface in a shallow saddle; a deposit of till lying in the saddle on one of the main north sloping ridges from Mt Zanuck
3
SE
2,050
cf. Notes for GEOLAND below
Patchy snow cover is present but no thawing observed
-40
Central Mountain
Granitic till with some dolerite
Nil observed
Nil
SURFACE WEATHERING or |
SURFACE FEATURES |
cf. Notes for SURFWEA below
Nil
256a 1-0cm
101
surface pebbly granular sand
102
loose
103
subangular to subrounded and moderately to strongly stained,
256b 0-5cm
201
strong brown (10YR 5/8) sandy to silty pebbly to bouldery gravel
202
a few salt flecks with concentrations beneath surface clasts
203
weakly cohesive
204
rock particles subrounded to subangular, distinctly stained and some partly altered
205
distinct boundary,
256c 5-20cm
301
strong brown (10YR 5/8) silty to sandy pebbly to bouldery gravel
302
weakly cohesive
303
scattered salt flecks
304
rock particles subangular to subrounded and weakly stained
305
some rock clasts completely crumbled
306
indistinct boundary,
256d 20-30cm
401
brownish yellow (10YR 6/6) silty to sandy pebbly to bouldery gravel
402
loose
403
rock particles mainly subangular and non to weakly stained
404
sharp boundary,
256e
501
salts from beneath surface stones on hard ice-cemented ground
Yes
b,c,d
Dry frozen over hard ice-cemented
30
4
(30cm)
Geoland
The saddle is part of an old dissection system; the till is old and represents an old high ice level in the Scott Glacier; it has some dolerite erratics which must have |
been derived from a distant source as no dolerite outcrops were observed on Mt Zanuck; granite outcrops on local ridges |
Surfwea
Physical disintegration and crumbling of surface boulders is well advanced; there is strong cavernous weathering and deflation in outcrops on an adjacent ridge; |
the till surface is probably not significantly deflated because of the existence of erratics; surface boulder are reduced to ground level; salts form a distinct crust |
beneath surface boulders |
Soluble Salt |
Concentration |
25600001
25600002
54.00
43.40
10.90
11.70
8.20
11.30
9.50
4.30
0.51
25600003
59.00
37.30
10.60
12.50
6.20
14.50
14.20
4.00
0.58
25600004
64.00
40.00
10.70
13.00
6.00
12.50
13.10
4.20
0.52
25600005
25600001
25600002
5.70
5.50
57.00
15.50
36.00
0.60
5.00
106.00
1.60
25600003
6.20
2.10
13.70
3.00
18.00
0.30
5.90
16.00
1.50
25600004
6.40
1.50
8.70
0.70
7.10
0.20
4.70
5.40
0.90
25600005
25600001
25600002
75
5
20
25600003
75
4
8
3
10
25600004
75
2
3
5
15
25600005
12-Dec-2005
Page 213 of 896
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