Ross Sea Region Soil Sites
379000
379
16-Nov-1977
IBC, GGC
Taylor Valley, eastern end near the coast
Soil weathering examination
USGS, Antarctica 1:50,000 Topo. Ser. 1977, Lake Fryxell, Antarctica
No
No
163.5830
-77.6283
77deg 37.7'S
-163deg -35.0'E
At the eastern end of the Kukri Hills near the top of Mt Barnes; a rounded knoll a few metres below the crest
7
E
980
Mt Barnes comprises mainly granitic rock but dark coloured, possibly iron rich, dyke rock intrusives occur in places; in places the soils on these intrusives are strongly |
coloured |
(7o)
No local snow patches but some summer soil surface moistening from periodic snow falls; |
light snow fall at the time of sampling |
-20
Coastal Antarctic
Fragmented dyke rock intrusive within granite bedrock
Nil observed
Weakly developed small nets with some larger clasts in the cracks
SURFACE WEATHERING or |
SURFACE FEATURES |
Some granite clasts weakly to moderately cavernously weathered; distinctive rock fragmentation and shattering; distinctive surface rusty brown staining on |
clasts; some polish and some weak pitting on dark coloured clasts; granites are commonly crumbled |
Nil
379a 1-0cm
101
surface pebbles, granules and yellowish brown (10YR 5/6) sandy gravel
102
pebbles angular and tabular and unstained but some weakly altered,
379b 0-5cm
201
strong brown (7.5YR 5/6) sandy pebble and cobble gravel
202
loose
203
few fine salt flecks
204
rock particles angular, distinctly stained and some partly altered
205
a few clay-like aggregates
206
indistinct boundary,
379c 5-10cm
301
strong brown (7.5YR 5/6) sandy gravel
302
weakly cohesive
303
few to many diffuse salts
304
rock particles angular and some distinctly altered
305
rock particles angular and some stained
306
a few clay-like aggregates
307
indistinct boundary,
379d 10-30cm
401
strong brown (7.5YR 5/6 - 5/8) sandy to silty gravel
402
weakly cohesive
403
rock particles angular to subangular and some distinctly altered
404
indistinct boundary,
379e 30-50cm
501
strong brown (7.5YR 5/8) sandy gravel
502
weakly cohesive
503
rock particles angular and unstained
Yes
a,b,c,d,e
Not known
50
4
(>50cm)
Soluble Salt |
Concentration |
37900001
9.00
37900002
51.00
37900003
42.00
37900004
32.00
37900005
26.00
37900001
37900002
37900003
37900004
37900005
37900001
37900002
37900003
37900004
37900005
12-Dec-2005
Page 336 of 896
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