Ross Sea Region Soil Sites
417000
417
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
156.6250
-79.9500
79deg 57.0'S
-156deg -37.5'E
Just below the summit of Mt Ash, on the western side; an undulating uneven surface comprising flattish and moderately slopes with oxidised sandstone and unweathered |
sandstone outcrops interspersed with patches of sorted drift deposits |
4
N
2,010
cf. Notes for GEOLAND below
Abundant small scattered snow patches; no thaw or soil moistening
-35
Inland Mountain
Cobbly quartzose sandstone
Nil observed
Moderately developed 5m nets with 50cm troughs
SURFACE WEATHERING or |
SURFACE FEATURES |
A moderately developed cobble and pebble pavement with subrounded clasts; strongly stained and polished; some sandstone clasts with a greyish glazed |
appearance and appear to be silicified |
Nil
417a 3-0cm
101
surface cobbles and pebbles and sand
102
subrounded and strongly stained
103
a few fine salt encrustations,
417b 0-1cm
201
light brown (7.5YR 6/4) sandy gravel
202
weakly cohesive
203
moderately developed vesicular structure
204
few fine salt flecks
205
rock particles rounded, strongly stained and altered
206
sharp boundary,
417c 1-8cm
301
light brown (7.5Y 6/4) sandy gravel
302
moderately cohesive
303
moderately developed vesicular structure
304
few salt precipitations
305
rock particles rounded strongly to moderately stained and some altered
306
distinct boundary,
417d 8-24cm
401
light reddish brown (5YR 6/3) sandy gravel
402
loose but with some cohesive patches
403
pulverulent
404
rock particles rounded and moderately stained with some fine particles strongly altered
405
sharp boundary,
417e 24-27cm
501
reddish brown (5YR 5/3 - 4/3 moist) hard ice-cemented sandy gravel
Yes
Bedrock
24
5
(>24cm)
Geoland
Beacon Group quartzose sedimentary rocks occur at the summit of Mt Ash; some granitic rocks up to large boulder size are present but are thought to have come |
from tillite in the Beacon Group; thin scattered drift deposits are thought to represent accumulations of local erosional materials concentrated by nivation cirque |
ice activity |
Soluble Salt |
Concentration |
41700001
7.00
41700002
79.00
41700003
49.00
41700004
64.00
41700005
82.00
41700006
41700001
41700002
41700003
41700004
41700005
41700006
41700001
41700002
41700003
41700004
41700005
41700006
12-Dec-2005
Page 374 of 896
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