Ross Sea Region Soil Sites
664000
664
14-Dec-1991
IBC, GGC, MRB
Hut Point Peninsula, Ross Island
Soil weathering examination
Dept of Interior USGS 1986 1:250,000 Ross Island & Vicinity, Antarctica
CS Pro
No
166.6550
-77.8167
77deg 49.0'S
-166deg -39.3'E
Approximately 550m N of McMurdo Station and on the upper surface of a shallow valley; a surface undisturbed from ground scraping
0
Nil
110
Rocks are predominantly scoria flows of the McMurdo Volcanics; Last Glaciation Ross 1 ice covered the site and traces of rocks (sandstone and granite granules and small |
pebbles) probably from the Royal Society Range can be found |
Oceanic subxerous; the site is dry
-18
Coastal Antarctic
Gravelly basaltic drift
Some yellow lichen on nearby basalt pebbles
Weakly developed patterned ground
SURFACE WEATHERING or |
SURFACE FEATURES |
Stony surface; some calcium carbonate coatings
Foot traffic disturbance but probably nil mechanical
664a 1-0cm
101
surface granular to cobbly gravel
102
rock particles subangular to rounded
103
a few thin surface salt precipitations
104
some fibrous organic debris,
664b 0-5cm
201
light brownish grey (2.5Y 6/2) sandy pebble gravel
202
weakly cohesive
203
moderately developed vesicular structure
204
some silt coatings
205
rock particles subangular to rounded
206
distinct boundary,
664c 5-20cm
301
olive (2.5Y 5/3) sandy to silty gravel
302
weakly cohesive
303
slightly moist
304
larger rock particles subangular and smaller particles subrounded
305
distinct boundary,
664d 20-30cm
401
olive (2.5Y 6/2) sandy gravel
402
cohesive
403
frosted with many ice crystals
404
rock particles subangular
405
sharp boundary, on hard ice-cemented ground
Yes
g
Hard ice-cemented
30
1
(30cm)
Soluble Salt |
Concentration |
66400001
13.00
66400002
53.00
66400003
26.00
66400004
36.00
66400001
66400002
66400003
66400004
66400001
66400002
66400003
66400004
12-Dec-2005
Page 622 of 896
664