Ross Sea Region Soil Sites
147000
147
24-Jan-1965
IBC, GGC
Victoria Land, Trans-antarctic Mountains; in Upper Victoria Valley, part of the McMurdo Sound Dry Valley system
Weathering examination
USGS 1:250 000 1986; Ross Island and Vicinity, Antarctica
B&W Pro & CS Lscp
No
161.4500
-77.4233
77deg 25.4'S
-161deg -27.0'E
cf. Notes for DESCR below
0
Nil
575
The surface has Vida Drift over the valley floor
(0o)
Xerous to subxerous; the site is dry with no permanent snow banks and little available water
23
Central mountain
Bouldery gravelly till with fine silty layers near the bottom of the profile; ablation tills are often subject to reworking as subsurface ice thaws and this may result in some fluvial sorting
Nil observed
Moderately developed network of large polygons with active troughs
SURFACE WEATHERING or |
SURFACE FEATURES |
Surface boulders 1-2m diameter; mainly subangular and weakly stained
Nil
45-55cm
101
light olive brown (2.5Y 5/4) sandy silt
102
firm
103
breaking to strongly developed small angular aggregates
Yes
a
0
Descr
On glacial drift mapped as Vida Till approximately .5km S of Lake Vashka; a gently undulating moderately bouldery moraine surface 50m away from a low rise; |
the site was sampled primarily for soil monolith collection but brown soil material near the base of the profile was collected for weathering examination |
Soluble Salt |
Concentration |
14700001
147a
50-55cm
50
55
none
12-Dec-2005
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