Ross Sea Region Soil Sites
432000
432
15-Nov-1978
IBC, GGC
Hatherton Glacier, Transantarctic Mountains
Soil weathering examination
United States Geological Survey 1966; 1:250,000 Turnstile Ridge, Antarctica
CS Pro
No
155.1330
-79.8750
79deg 52.5'S
-155deg -8.0'E
To the north of an un-named peak (Pk 2421) to the SE of Turnstile Ridge and west of the head of the Hatherton Glacier on the moraine covered floor of a big basin; a valley |
floor hummocky moraine to the SE of the basin glacier |
0
Nil
2,050
cf. Notes for GEOLAND below
Small patches of snow but no thaw or soil moistening; most snow lying in patterned ground |
cracks |
-40
Inland Mountain
Locally derived till from dolerite probably with previously weathered accessions from higher and older surfaces
Nil observed
Net polygons, 5-10m across with troughs up to 1m deep
SURFACE WEATHERING or |
SURFACE FEATURES |
Dolerite boulders show distinctive staining; coarse grained clasts disaggregating; some thin diffuse salt coatings beneath some clasts; a moderately |
developed pavement with weakly developed ventiforms; moderate surface rounding |
Nil
432a 2-0cm
101
surface pebble cobbles and boulders and granular sand
102
rock particles moderately stained and some moderately altered,
432b 0-12cm
201
yellowish brown (10YR 5/8) sandy gravel
202
weakly cohesive
203
few fine salt flecks
204
rock particles mainly subangular, moderately stained and some moderately altered
205
indistinct boundary,
432c 12-30cm
301
brownish yellow (10YR 6/6) sandy gravel
302
loose
303
rock particles subangular and weakly stained with a few moderately altered
304
sharp boundary, on frozen ground
Yes
Hard ice cemented/ possibly over ice
30
2/3
(30cm)
Geoland
Ferrar Dolerite outcrops on the high surfaces; the soils on the high surfaces show significant weathering and the tills on the lower surfaces probably include |
much reworked and pre weathered material; the lower moraine surfaces of the basin are complex and probably represent accumulations from slow differential |
retreat of local ice tongues |
Soluble Salt |
Concentration |
43200001
30.00
43200002
82.00
57.60
17.60
10.40
5.20
3.20
4.20
1.00
0.54
43200003
85.00
49.00
20.00
13.90
7.60
8.80
2.20
0.90
0.42
43200001
43200002
6.80
2.00
4.50
3.25
3.90
0.43
4.63
7.00
43200003
6.80
1.40
2.30
2.50
3.00
0.02
0.37
2.86
0.50
43200001
43200002
55
disordered clays
43200003
disordered clays
12-Dec-2005
Page 389 of 896
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