Ross Sea Region Soil Sites
418000
418
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
156.6270
-79.9400
79deg 56.4'S
-156deg -37.6'E
Just north of Mt Ash, in a high saddle adjacent to dolerite cliffs; a broad flattish surface between dolerite outcrops
0
Nil
1,900
Ferrar Dolerite outcrops extensively on the upper slopes; a few sandstone clasts are present which may have originated from slope working or cryogenic processes
Small snow pockets in the lee of boulders; no thaw or soil moistening
-35
Inland Mountain
Gravelly dolerite drift
Nil observed
Nil
SURFACE WEATHERING or |
SURFACE FEATURES |
cf. Notes for SURFWEA below
Nil
418a 2-0cm
101
surface pebbles, cobbles and granular sand
102
subrounded to subangular, very strongly stained and some particles moderately altered,
418b 0-4cm
201
dark yellowish brown (10YR 3/4) sandy granular gravel
202
colour variable with darkest colour adjacent to disaggregring rocks
203
moderately cohesive
204
weakly developed vesicular structure
205
rock particles subangular, strongly stained and altered
206
some ghosts distinct boundary,
418c 4-15cm
301
dark yellowish brown (10YR 4/4) sandy gravel
302
moderately cohesive
303
moderately developed vesicular structure
304
abundant diffuse salts
305
rock particles mainly subangular, moderately to strongly stained and altered
306
irregular boundary,
418d 15-40cm
401
yellowish brown (10YR 5/3) sandy cobble gravel
402
moderately cohesive
403
few fine salt patches
404
rock particles subangular and weakly stained but some strongly fragmented
405
a few ghosts
406
sharp boundary,
418e 40-45cm
501
light yellowish brown (2.5Y 6/4) hard ice-cemented sandy gravel
Yes
Dry frozen over ice-cemented
40
4
(40cm)
Surfwea
A strongly developed surface cobble and pebble pavement, slightly ventiform, with a few boulders; moderate rounding; some smaller clasts are highly oxidised |
but moderately polished and pitted; coarser grained clasts have patchy oxidation and are partly exfoliated; few salts beneath some surface stones, |
Soluble Salt |
Concentration |
41800001
10.00
41800002
97.00
41800003
86.00
41800004
66.00
41800005
27.00
41800006
41800001
41800002
41800003
41800004
41800005
41800006
gypsum
41800001
41800002
41800003
41800004
41800005
41800006
12-Dec-2005
Page 375 of 896
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