Ross Sea Region Soil Sites
286000
286
10-Jan-1970
IBC, GGC
Scott Glacier region, southern Trans-antarctic Mountains, on the West side of the Robert Scott Glacier, about 8km from the coast in the Medina Peaks region
Soil weathering examination
Mount Goodale
CS Lscp
No
-154.6000
-85.5467
85deg 32.8'S
154deg 36.0'E
Mt Rigby at the northwest side of the mouth of the Robert Scott Glacier; low undulating hills at the northern end where rock outcrops widely with intermittent cover of till; a |
west sloping lower altitude site on the southern slopes of Mt Rigby |
5
W
750
cf. Notes for GEOLAND below
(5o)
Scattered snow patches; some water in pools adjacent to ice edges; occasional snow thaw |
patches |
-20
Coastal Mountain
Granitic till with some dolerite, Beacon Group rocks and marble
Lichen and algae observed in the general area
Weakly developed nets
SURFACE WEATHERING or |
SURFACE FEATURES |
Rock outcrops have some surface oxidation; cavernous weathering in places but filled with younger till deposits, indicating the weathering is fossil; staining |
on till boulders is weak; scattered salts beneath some surface stones |
Nil
286a 5-0cm
101
surface pebbles boulders and granular sand
102
weakly stained,
286b 0-5cm
201
light grey (5Y 7/1) sandy pebble gravel
202
moderately cohesive
203
well developed vesicular structure
204
rock particles subangular and unstained
205
distinct boundary,
286c 5-15cm
301
light grey to light olive grey (5Y 7/2 - 6/2) sandy to silty gravel
302
weakly cohesive
303
weakly developed vesicular structure
304
rock particles subangular and unstained
305
indistinct boundary,
286d 15-40cm
401
white (5Y 5/8) sandy to silty pebbly to bouldery gravel
402
loose
403
rock particles subangular and unstained
404
sharp boundary, on ice-cemented ground
Yes
a,b,c,d,e
Ice-cemented
40
2
(40cm)
Geoland
Rocks of this area include granites and a series of metsedimentary rocks; at Mt Rigby the rocks are mainly granites but the landscape has an old appearance on |
the higher surfaces which have been inundated by later ice advances, most probably from an expanded and grounded Ross Ice Shelf; lower level surfaces are less |
weathered |
Soluble Salt |
Concentration |
28600001
18.00
28600002
62.00
28600003
76.00
28600004
80.00
28600005
75.00
28600006
28600001
28600002
28600003
28600004
28600005
28600006
bloedite/tr thenardite
28600001
28600002
28600003
28600004
28600005
28600006
12-Dec-2005
Page 243 of 896
286