Ross Sea Region Soil Sites
419000
419
12-Nov-1978
IBC, GGC
Darwin/Hatherton Glacier, Darwin Mountains Transantarctic Mountains
Soil weathering examination
United States Geological Survey 1966; 1:250,000 Carlyon Glacier Antarctica
CS Pro & Lscp
No
156.7830
-79.9283
79deg 55.7'S
-156deg -47.0'E
Approximately 4km NE of Mount Ash on a sloping valley floor moraine
7
NW
1,200
cf. Notes for GEOLAND below
Small snow pockets in the lee of boulders; no thaw or soil moistening
-25
Central Mountain
Gravelly moraine from sandstone, dolerite and granite; probably includes some pre weathered material
Nil observed
Weakly developed 10-15m nets with shallow troughs
SURFACE WEATHERING or |
SURFACE FEATURES |
A weakly to moderately weathered surface; weak pavement development; weak to moderate surface staining with slight pitting; some granite moderately |
stained and partly crumbled; few salts beneath surface stones |
Nil
419a 3-0cm
101
surface pebbles, cobbles and granular sand
102
mainly subangular moderate surface staining,
419b 0-2cm
201
brown (10YR 5/3) sandy granular gravel
202
moderately cohesive
203
rock particles subrounded to subangular weakly to moderately stained
204
and partly coated with siltyish aggregate, distinct boundary,
419c 2-20cm
301
strong brown (7.5YR 5/6) sandy gravel
302
weakly cohesive
303
rock particles mainly subangular and unstained but strongly coated with siltyish aggregate
304
sharp boundary,
419d 20-25cm
401
strong brown (7.5YR 5/6) hard ice-cemented ground
Yes
Hard ice-cemented
20
3
Geoland
Local rocks are Ferrar Dolerite and Beacon Sandstone; the till includes some granite which is widespread lower down the Darwin Glacier, the moraine |
topography including the shape of terminal loops strongly suggests an ice advance into the valley; a much younger event than Asgard till of the Wright Valley |
Soluble Salt |
Concentration |
41900001
18.00
41900002
83.00
41900003
88.00
41900004
44.00
41900005
41900001
41900002
41900003
41900004
41900005
gypsum
41900001
41900002
41900003
41900004
41900005
12-Dec-2005
Page 376 of 896
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