Ross Sea Region Soil Sites
808000
808
20-Jan-1995
IBC, GGC
Greenville Valley, southwest of Northwind Glacier in the Convoy Range
Permafrost and soil moisture investigations
not recorded
Lscp & CS Profile
No
160.8180
-76.7517
76deg 45.1'S
-160deg -49.1'E
cf. Notes for DESCR below
0
Nil
1,175
cf. Notes for GEOLAND below
1
-8.0
5
-7.0
10
-6.0
15
-7.0
20
-7.0
28
-7.0
Xerous to sub xerous; several snowfalls and a recent fall within 4 days; most snow cover |
removed by ablation but some soil moistening in the upper few centimetres; no liquid flows |
-27
Central Mountain
Doleritic till with scattered granite and sandstone over ice-cemented ground
Occasional yellow and green lichen in rock fissures and some patches of black lichen
weakly developed 4-8m nets with 20cm troughs
SURFACE WEATHERING or |
SURFACE FEATURES |
Dolerite clasts are moderately to strongly oxidised, sub rounded to sub angular and moderately abraded; some cyclic staining and exfoliation of oxidised |
surfaces; coarse grained clasts strongly disaggregated; some salts beneath surface stones |
Nil
808a 2-0cm
101
surface cobble and boulders
102
well developed pavement
103
clasts mainly subrounded to rounded and moderately to strongly stained
104
medium pitting and weakly ventiform
105
salts beneath many surface stones,
808b 0-3cm
201
dark reddish brown (5YR 3/4) cobbly gravelly sand
202
very firm and frosted
203
moderately developed vesicular structure
204
rock particles subangular to subrounded, strongly stained and strongly altered
205
distinct boundary,
808c 3-10cm
301
dark reddish brown (5YR 3/4) pebbly to cobbly gravel
302
firm and & d partly frozen
303
diffuse salts but some large very salty patches (sampled separately)
304
rock particles mainly angular, weakly stained with smaller particles strongly altered
305
distinct boundary,
808e 10-28cm
401
brown to dark brown (7.5YR 4/4) sandy bouldery to pebbly gravel
402
moderately cohesive
403
rock particles mainly unstained and angular comprising some fragmented boulder material
404
many smaller particles strongly altered
405
sharp boundary,
808f 28-44cm
501
pale brown (10YR 6/3) ice-cemented gravel (drill core)
502
rock particles subangular to subrounded with some moderately altered,
808g 44-57cm
601
light gray (10YR 7/2) ice-cemented gravel (drill core)
602
rock particles subangular with some moderately altered,
808h 57-74cm
701
light gray (10YR 7/2) ice-cemented gravel (drill core)
702
rock particles subangular with some moderately altered
703
808i 74-90cm
801
light gray (10YR 7/2) ice-cemented gravel (drill core)
802
rock particles subangular
803
some moderately altered,
808j 90-102cm
901
light gray (10YR 7/2) ice-cemented gravel (drill core)
902
rock particles angular,
808k 102-115cm
1001
light gray (10YR 7/2) ice-cemented gravel (drill core)
Yes
a,b,c,d,e,f,g,h,i,j,k
a,b,c,d,e,f,g,h,i,j,k
Hard ice-cemented
0
5
( ice-cemented at 28cm)
Descr
Approximately 700 m north of site 805; approximately 8.25 km WSW of Larsen Crag, on the south west side of Greenville Valley, on a descending valley floor |
surface formed below a higher terrace like surface; the surface is slightly undulating with minor topography formed from patterned ground features,,,,, |
Geoland
Greenville Valley comprises mainly dolerite with some minor sedimentary rocks (Weller Coal Measures) and has been formed by ancient ice over riding the |
Convoy Range from the west; valley head-wall deposits occur mainly around the south-western side of the valley and represent alpine glacial deposits; towards |
the western end of Greenville Valley, the surface is a dolerite platform with a thin irregular till cover with occasional sandstone and decomposed granite erratics; |
on the lower surfaces which slope and drain towards the north-east, tills deposits are more extensive, have more strongly developed patterned ground and have a |
greater abundance of pink granite erratics; at this site sandstone, presumably from outcrops further down valley accounts for about 2% of the surface clasts,,,,, |
Soluble Salt |
Concentration |
80800001
808a
2-0cm
-2
0
17.62
0.49
none
80800002
808b
0-3cm
0
3
1.42
62.36
4.70
none
80800003
808c
3-10cm
3
10
1.54
42.72
3.45
none
80800005
808e
10-28cm
10
28
1.57
49.94
3.30
none
80800006
808f
28-44cm
28
44
30.40
8.15
none
80800007
808g
44-57cm
44
57
21.45
8.15
none
80800008
808h
57-74cm
57
74
26.28
10.92
none
80800009
808i
74-90cm
74
90
42.59
11.44
none
80800010
808j
90-102cm
90
102
27.93
10.69
none
80800011
808k
102-115cm
102
115
31.70
10.03
none
80800001
17.60
0.49
80800002
62.40
4.70
80800003
42.70
3.45
80800004
62.30
4.77
80800005
49.90
3.30
80800006
30.40
8.15
80800007
21.50
8.10
80800008
26.30
10.29
80800009
42.60
11.44
80800010
27.90
10.69
80800011
31.70
10.03
80800001
80800002
80800003
80800004
80800005
80800006
80800007
80800008
80800009
80800010
80800011
80800001
80800002
80800003
80800004
80800005
80800006
80800007
80800008
80800009
80800010
80800011
12-Dec-2005
Page 785 of 896
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