Ross Sea Region Soil Sites
237000
237
5-Dec-1969
IBC, GGC
Scott Glacier region, southern Trans-antarctic Mountains at the southern end of the Watson Escarpment
Soil weathering examination
US Geological Survey 1:250 000 1968, Mount Blackburn
B&W & CS Lscp
No
-148.6170
-86.3500
86deg 21.0'S
148deg 37.0'E
A ridge top peak to the north of Mt Czgeka; at the summit amongst rock outcrops; a narrow craggy ridge with pockets of weathering debris
0
Nil
2,025
Coarse crystalline granitic micaceous rocks outcrop with ample evidence of rock weathering at these higher altitudes
| Some small snow pockets; probable brief liquid water on rock surfaces after snow fall and |
| thaw |
-40
Inland Mountain
Fragmental coarse grained biotite granite detritus
Yellow crustose lichen (Lecanora griseomarginata, or Acarospora emergens) in cracks in the rock
Nil
| SURFACE WEATHERING or |
| SURFACE FEATURES |
| Rock outcrop surfaces show marked oxidation and staining; there is deep cavernous weathering with 1-2m of rock removed in places; exfoliation forms |
| manly angular fragments; weatering extends to 30cm in places |
Nil
237a 0-3cm
101
olive brown (2.5Y 4/4) sandy granular pebble gravel
102
loose
103
rock particles mainly angular
104
some distinctly altered with rusty alteration on mineral grains in fissures
105
sharp boundary,
237b 3-5cm
201
light olive brown (2.5Y 5/4) sand amongst fragmented and weakly altered granitic bedrock
Yes
a,b
0
4
| Soluble Salt |
| Concentration |
23700001
35.00
45.70
18.20
16.50
7.60
3.90
4.30
3.00
0.52
23700002
15.00
23700001
6.50
8.25
22.00
14.00
20.00
0.88
2.10
19.00
35.00
23700002
6.60
95.00
650.00
41.00
43.00
0.88
0.90
69.00
866.00
gypsum/halite/calcite
23700001
85
5
5
5
23700002
12-Dec-2005
Page 194 of 896
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