Ross Sea Region Soil Sites
369000
369
16-Dec-1972
IBC, GGC
McMurdo Dry Valley region; Wright Valley
Weathering examination
USGS 1:50,000 Antarctic Topo. Ser. Lake Vanda Quadrangle
CS Pro
No
161.9450
-77.5200
77deg 31.2'S
-161deg -56.7'E
South of Bull Pass on the old fan surface; the lower slope of a small hill with a sedimentary exposure of Pecten Fan Gravel
15
W
150
The Pecten Gravel deposit was once thought to be a glacial till from an early up valley ice advance but is now thought to represent the deposits formed prior to uplift when |
Wright Valley was a fjord; the sediments at the site are varied |
(15o)
Surface is snow free; no soil moistening observed
-23
Coastal Mountain
Layer in a sedimentary sequence
(-23oC)
Nil observed
Nil
SURFACE WEATHERING or |
SURFACE FEATURES |
Previous glaciological investigations at the site
369 0
101
Soil not described
102
(5Y 5/3) silty sand
103
moderately firm
104
sand particles rounded and unstained
Yes
a
0
Soluble Salt |
Concentration |
36900001
88.00
36900001
36900001
12-Dec-2005
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