Ross Sea Region Soil Sites
499000
499
13-Jan-1983
IBC, GGC
Convoy Range, Trans-antarctic Mountains, in the valley of the Northwind Glacier
Soil characterisation
B&W & CS Pro
No
160.7500
-76.7517
76deg 45.1'S
-160deg -45.0'E
| 8.5km SW of the western end of the Northwind Glacier on an extensive bench-like or terrace surface; the surface is extremely variable with patches of dolerite felsenmeer, |
| strongly oxidised and less oxidised areas, patterned and non-patterned ground etc. |
0
Nil
140
| Dolerite and Beacon Group sediments occur locally and the regolith mantle appears to be from local materials; surface weathering features suggest a considerable age for the |
| surface but the soil is dominantly pale coloured; |
Xerous; no local snow patches but the soil is moist
-28
Central mountain
Thin residual dolerite drift over sandstone
Occasional patches of yellow lichen in exfoliation cracks
Poorly defined old nets, currently probably inactive
| SURFACE WEATHERING or |
| SURFACE FEATURES |
cf. Notes for SURFWEA below
Nil
499a 3-0cm
101
surface cobbles, pebbles and granules
102
mostly subrounded, moderate to weakly stained and moderately altered,
499b 0-7cm
201
light yellowish brown (2.5Y 6/4) gravelly sand
202
firmly cohesive
203
abundant salts diffused irregularly throughout
204
larger rock particles moderately stained
205
smaller particles subangular, weakly stained and weakly altered
206
some salt crystal accumulations around ferruginous zones
207
some ghosts
208
distinct boundary,
499c 7-13cm
301
light yellowish brown to light olive brown (2.5Y 6/4-5/4) pebbly coarse sand
302
moist
303
moderately cohesive
304
rock particles subangular to subrounded, weakly stained and moderately altered
305
distinct boundary,
499d 13-40cm
401
olive (5Y 5/3) pebbly sand
402
moderately cohesive
403
salt flecks precipitating on the drying soil surface
404
rock particles subrounded to rounded, weakly stained and moderately altered
405
sharp boundary, on frozen ground
Yes
a,b,c,d
Hard ice-cemented
40
4
(40cm)
Surfwea
| A well developed pavement with rounded surface dolerite cobbles and pebbles; staining ranges from strong to weak depending on the degree of abrasion; some |
| pitted rocks are present; exfoliation skins on surface clasts are well developed; a well developed oxidation rind is present beneath some surface clasts |
| Soluble Salt |
| Concentration |
49900001
49900002
85.00
27.00
34.00
17.00
4.00
3.00
6.00
9.00
0.11
49900003
67.00
23.00
39.00
21.00
4.00
2.00
5.00
6.00
0.10
49900004
95.00
21.00
32.00
20.00
4.00
3.00
8.00
11.00
0.10
49900001
49900002
8.50
3.17
7.20
13.20
4.80
0.08
0.08
14.00
3.50
49900003
8.70
2.60
8.40
3.20
5.20
0.08
0.08
4.80
4.00
49900004
8.60
3.27
9.60
2.50
6.40
0.08
0.20
4.60
6.20
49900001
49900002
70
5
5
20
49900003
75
5
18
2
49900004
80
5
5
10
12-Dec-2005
Page 457 of 896
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