Ross Sea Region Soil Sites
429000
429
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 & Lscp
No
155.0670
-79.9067
79deg 54.4'S
-155deg -4.0'E
cf. Notes for DESCR below
0
Nil
2,400
cf. Notes for GEOLAND below
Small patches of snow but no thaw or soil moistening
-40
Inland Mountain
A thin cover of cobbly to bouldery dolerite gravel over fractured bedrock
Nil observed
Nil but the soil site may be an ancient patterned ground crack
| SURFACE WEATHERING or |
| SURFACE FEATURES |
| A moderately developed cobble and small boulder pavement; some bedrock outcrops; boulders are well rounded and weakly ventiform; coarse grained |
| dolerite strongly disintegration; strong surface oxidation; |
Nil
429a 3-0cm
101
surface cobble and small boulder granular gravel pavement
102
rock particles strongly stained and many smaller particles altered,
429b 0-3cm
201
brown to dark brown (7.5YR 5/4 - 4/4) granular gravel
202
loose
203
rock particles mainly angular exfoliated fragments
204
strongly stained and moderately to strongly altered
205
sharp boundary,
429c 3-12cm
301
yellowish red (5YR 4/6) sandy cobble gravel
302
loose
303
many salt flecks and salts precipitating on the exposed soil surface forming a distinct diffuse horizon
304
| rock particles strongly stained, angular and moderately to strongly altered with some ferromagnesian minerals |
| altered to red (2.5Y 4/3) amorphous material |
305
distinct boundary,
429d 12-35cm
401
strong brown (7.5YR 5/6) stony sandy gravel
402
fines between fractured bedrock are loose
403
rock particles angular and unstained, on fractured bedrock
Yes
Dry frozen
35
5/6
(>35cm)
Descr
| Near an un-named peak to the SE of Turnstile Ridge at the head of the Hatherton Glacier (Pk 2421); a high dolerite remnant plateau surface approximately 400m |
| above the edge of the Polar Plateau ice; the site is near the top of Pk 2421 on a flattish cobble/boulder surface, about 10m from a small escarpment in a very |
| shallow hollow |
Geoland
| Ferrar Dolerite outcrops on the high surfaces; this site being 400m above the Polar Plateau ice is probably an old surface that has remained unglaciated for a long |
| period; the site forms part of an escarpment which drops 800m to the NE to the Hatherton Glacier; the site may be an old feldsenmeer surface that has been |
| weathered |
| Soluble Salt |
| Concentration |
42900001
23.00
42900002
54.00
39.90
26.10
22.30
6.10
1.80
2.10
0.90
0.55
42900003
66.00
51.60
23.60
15.70
4.50
1.80
1.50
0.50
0.49
42900004
25.00
44.50
25.10
17.50
5.80
3.10
2.70
0.70
0.50
42900001
42900002
6.20
1.90
1.40
8.75
3.80
0.01
0.41
10.70
2.70
42900003
5.40
2.10
2.40
7.75
4.20
0.02
0.60
9.50
3.80
42900004
7.80
1.40
2.60
2.75
3.00
0.01
0.49
4.70
3.40
42900001
42900002
15
15
15
40
5
10
42900003
20
10
15
20
35
disordered
42900004
15
15
10
10
50
disordered
12-Dec-2005
Page 386 of 896
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