Ross Sea Region Soil Sites
756000
756
12-Jan-1994
MRB, DIC
Wright Valley from a surface on the top of Dais
soil moisture and permafrost characterisation
not recorded
No
161.6730
-77.5217
77deg 31.3'S
-161deg -40.4'E
From a wide saddle on the eastern end of Dais, 15 west of a large granite boulder
0
700
cf. Notes for GEOLAND below
(~ .. ~700)
Xerous
-24
Central Mountain
Bouldery till
SURFACE WEATHERING or |
SURFACE FEATURES |
756 3-0cm
101
surface pavement with granite, granodiorite and dolerite predominant
756a 0-5cm
201
light olive brown (2.5Y 5/4) gravelly sand
202
loose
203
rock particles subangular and non to weakly stained,
756b 5-35cm
301
light yellowish brown (2.5Y 6/4) sandy to silty gravel with 70% > 2mm
302
loose
303
rock particles subangular to subrounded and unstained,
756c 35-55cm
401
light yellowish brown (2.5Y 6/4) cobbly to bouldery sandy to silty gravel with 70% > 2mm
402
loose
403
rock particles subangular to subrounded and unstained,
756d 55-75cm
501
pale yellow (2.5Y 7/4) gravelly silty sand with few cobbles and boulders
502
loose
503
rock particles subrounded and unweathered,
756e 75cm+
601
pale olive (5Y 6/3) gravelly sand
602
loose
Yes
a,b,c,d,e
Dry frozen, loose
0
3
Geoland
The Dais is an old landsurface which has probably been cut during very early glaciation of Wright Valley with the prominant steps in the surface being in part a |
result of the existence of dolerite sills in the local granite/granodiorite bedrocks; surficial deposits on the surface of Dais are old tills; some of these appear to |
have originated from a down-valley source as boulders of marble, similar to the basement rock marbles of Marble Point at the eastern end of the valley |
Soluble Salt |
Concentration |
75600001
756
3-0cm
-3
0
none
75600002
756a
0-5cm
0
5
67.00
0.65
none
75600003
756b
5-35cm
5
35
58.00
2.05
none
75600004
756c
35-55cm
35
55
65.00
2.71
none
75600005
756d
55-75cm
55
75
58.00
2.89
none
75600006
756e
75cm+
0
99999
34.00
1.03
none
75600001
67.00
0.65
75600002
58.00
2.05
75600003
65.00
2.71
75600004
58.00
2.89
75600005
34.00
1.03
75600001
75600002
75600003
75600004
75600005
75600001
75600002
75600003
75600004
75600005
12-Dec-2005
Page 726 of 896
756