Ross Sea Region Soil Sites
436000
436
16-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
155.1280
-79.8750
79deg 52.5'S
-155deg -7.7'E
cf. Notes for DESCR below
18
NW
2,050
cf. Notes for GEOLAND below
Small patches of snow but no thaw or soil moistening; snow in patterned ground cracks
-40
Inland Mountain
Sandy bouldery gravel till from dolerite; probably includes some pre-weathered materials
Nil observed
Moderately developed nets with distinct mounds and 50cm troughs
SURFACE WEATHERING or |
SURFACE FEATURES |
Some crumbling of coarse grained clasts; boulders upstanding to 70cm; a mixture of strongly stained and non stained surface clasts; a moderately developed |
pebble pavement |
Nil
436a 3-0cm
101
surface cobbles, pebbles and granular sand
102
moderately to strongly stained, subrounded to angular and moderately altered,
436b 0-3cm
201
strong brown (7.5YR 5/8) granular sandy pebble gravel
202
weakly cohesive
203
weakly developed vesicular structure
204
few diffuse salt patches
205
rock particles mainly weakly to moderately stained with some moderately altered
206
indistinct boundary,
436c 3-10cm
301
strong brown (7.5YR 5/6) sandy fine gravel
302
weakly cohesive
303
few to many salt flecks
304
rock particles mainly subangular and unstained with some partly altered
305
indistinct boundary,
436d 10-20cm
401
strong brown (7.5YR 5/6) sandy fine gravel
402
weakly cohesive
403
frosted
404
rock particles subangular and unstained
405
sharp boundary,
436e 20-25cm
501
brown to dark brown (7.5YR 4/4 moist) ice-cemented ground
Yes
Hard ice-cemented
20
4
(20cm)
Descr
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; on younger valley floor moraine approximately 300m SW from the basin glacier; on a hummocky moraine surface |
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; on the valley floor, the moraine sequence is complex but older tills occur further from the ice margin |
Soluble Salt |
Concentration |
43600001
33.00
43600002
70.00
45.50
23.60
15.70
6.10
4.90
2.10
1.60
0.54
43600003
71.00
48.60
21.40
14.80
5.80
4.50
3.30
0.90
0.47
43600004
55.00
53.40
20.10
12.00
4.80
3.20
3.00
3.10
0.40
43600005
68.00
49.60
21.70
14.00
5.70
4.40
2.60
1.40
0.49
43600001
43600002
7.20
2.80
5.40
6.00
5.80
1.70
8.60
6.90
43600003
7.00
2.00
3.80
2.75
4.80
1.85
5.00
5.30
43600004
7.10
1.70
3.70
1.25
4.00
0.89
3.30
5.10
43600005
7.60
0.45
1.70
0.05
0.50
0.38
0.20
1.60
43600001
43600002
10
25
glass 60%
43600003
15
15
10
50
10
poorly crystalline
43600004
10
5
glassy
43600005
10
5
glassy
12-Dec-2005
Page 393 of 896
436